WO2021236586A1 - Processes for the hydrogenolysis of glycerol - Google Patents

Processes for the hydrogenolysis of glycerol Download PDF

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Publication number
WO2021236586A1
WO2021236586A1 PCT/US2021/032889 US2021032889W WO2021236586A1 WO 2021236586 A1 WO2021236586 A1 WO 2021236586A1 US 2021032889 W US2021032889 W US 2021032889W WO 2021236586 A1 WO2021236586 A1 WO 2021236586A1
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Prior art keywords
shaped porous
porous carbon
carbon black
carbon product
catalyst
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PCT/US2021/032889
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English (en)
French (fr)
Inventor
Joshua TERRIAN
Andrew J. Ingram
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Archer-Daniels-Midland Company
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Publication date
Priority claimed from US16/877,222 external-priority patent/US11253839B2/en
Application filed by Archer-Daniels-Midland Company filed Critical Archer-Daniels-Midland Company
Priority to JP2022570337A priority Critical patent/JP2023526927A/ja
Priority to CN202180032846.1A priority patent/CN115551824A/zh
Priority to BR112022022606A priority patent/BR112022022606A2/pt
Priority to EP21731354.3A priority patent/EP4153550A1/en
Publication of WO2021236586A1 publication Critical patent/WO2021236586A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/08—Heat treatment
    • B01J37/082—Decomposition and pyrolysis
    • B01J37/084—Decomposition of carbon-containing compounds into carbon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/18—Carbon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
    • B01J23/42—Platinum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
    • B01J23/46—Ruthenium, rhodium, osmium or iridium
    • B01J23/462—Ruthenium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
    • B01J23/46—Ruthenium, rhodium, osmium or iridium
    • B01J23/464—Rhodium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/48—Silver or gold
    • B01J23/52—Gold
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/54—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/56—Platinum group metals
    • B01J23/64—Platinum group metals with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/652—Chromium, molybdenum or tungsten
    • B01J23/6527—Tungsten
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/89—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with noble metals
    • B01J23/892—Nickel and noble metals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J35/61—Surface area
    • B01J35/613—10-100 m2/g
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J35/61—Surface area
    • B01J35/615—100-500 m2/g
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J35/63—Pore volume
    • B01J35/633—Pore volume less than 0.5 ml/g
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J35/63—Pore volume
    • B01J35/635—0.5-1.0 ml/g
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J35/64—Pore diameter
    • B01J35/651—50-500 nm
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/02—Impregnation, coating or precipitation
    • B01J37/0201—Impregnation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/02—Impregnation, coating or precipitation
    • B01J37/0201—Impregnation
    • B01J37/0203—Impregnation the impregnation liquid containing organic compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/16—Reducing
    • B01J37/18—Reducing with gases containing free hydrogen
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
    • C07C29/60—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by elimination of -OH groups, e.g. by dehydration
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts

Definitions

  • the present invention generally relates to processes for the catalytic hydrogenolysis of glycerol to produce propylene glycol and/or ethylene glycol.
  • Carbon is a material that can be deployed as a catalyst support or adsorbent.
  • the most commonly used carbon based supports for chemical catalysis are activated carbons exhibiting high specific surface areas (e.g., over 500 m 2 /g).
  • Preparing activated carbon requires activating a carbonaceous material such as charcoal, wood, coconut shell or petroleum-sourced carbon black either by a chemical activation, such as contacting with an acid at high temperatures, or by steam activation. Both methods of activation produce high concentrations of micropores and consequently higher surface areas.
  • the resultant activated carbons may have a high residual content of inorganic ash and sulfur, and possibly oxygen or nitrogen-containing functional groups at the surface.
  • Activated carbons are thought to possess an optimum support structure for catalytic applications as they enable good dispersion of catalytically active components and effective adsorption and reaction of chemical reagents at the catalyst surface.
  • the present invention is directed to processes for the hydrogenolysis of glycerol.
  • Some processes comprise feeding a feed composition comprising glycerol to a reaction zone and reacting the glycerol with hydrogen in the presence of a catalyst composition as described herein (e.g., comprising a shaped porous carbon product) in the reaction zone to form a reaction product comprising propylene glycol and/or ethylene glycol.
  • a catalyst composition as described herein (e.g., comprising a shaped porous carbon product) in the reaction zone to form a reaction product comprising propylene glycol and/or ethylene glycol.
  • Other processes for the hydrogenolysis of glycerol comprise feeding a feed composition comprising glycerol to a reaction zone and reacting the glycerol with hydrogen in the presence of a catalyst composition in the reaction zone to form a reaction product comprising propylene glycol and/or ethylene glycol, wherein the catalyst composition comprises a catalytically active component comprising a metal selected from the group consisting of chromium, cobalt, nickel, copper, zinc, ruthenium, rhodium, palladium, silver, rhenium, osmium, iridium, platinum, gold, and any combination thereof and a catalyst support comprising a shaped porous carbon product comprising carbon black.
  • a catalytically active component comprising a metal selected from the group consisting of chromium, cobalt, nickel, copper, zinc, ruthenium, rhodium, palladium, silver, rhenium, osmium, iridium, platinum, gold, and any combination
  • FIG. 1 provides a scanning electron microscopy image of the cross-section of a sample of the catalyst extrudate prepared with Monarch 700 carbon black.
  • FIG. 2 provides a magnified view of one of catalyst extrudate cross-sections of
  • FIG. 3 presents a plot of the cumulative pore volume (%) as a lunction of mean pore diameter for a raw Monarch 700 carbon black material.
  • FIG. 4 presents a plot of the cumulative pore volume (%) as a lunction of mean pore diameter for a fresh catalyst extrudate including the Monarch 700 carbon black material.
  • FIG. 5 presents a plot of the cumulative pore volume (%) as a lunction of mean pore diameter for a catalyst extrudate including the Monarch 700 carbon black material following 350 hours of use.
  • FIG. 6 presents a plot of the cumulative pore volume (%) as a lunction of mean pore diameter for an extrudate using Monarch 700 carbon black and a glucose/hydroxyethyl cellulose binder.
  • FIG.7 presents a plot of the cumulative pore volume (%) as a function of mean pore diameter for an extrudate using Sid Richardson SC159 carbon black and a glucose/hydroxyethyl cellulose binder.
  • FIG. 8 presents a plot of the cumulative pore volume (%) as a lunction of mean pore diameter for a extrudate using Sid Richardson SC159 carbon black and a glucose/hydroxyethyl cellulose binder which has been exposed to oxygen at 300°C for 3 hours.
  • FIG. 9 presents a plot of the cumulative pore volume (%) as a function of mean pore diameter for an extrudate using Asbury 5368 carbon black and a glucose/hydroxyethyl cellulose binder.
  • FIG. 10 presents a plot of the cumulative pore volume (%) as a function of mean pore diameter for an activated carbon extrudate of Siid Chemie G32H-N-75.
  • FIG. 11 presents a plot of the cumulative pore volume (%) as a function of mean pore diameter for an activated carbon extrudate of Donau Supersorbon K4-35.
  • FIG. 12 presents the pore size distribution for an extrudate using Sid Richardson SC159 carbon black and a glucose/hydroxyethyl cellulose binder measured by mercury porosimetry.
  • FIG. 13 presents a plot of the pore diameter vs pore volume for a carbon black extrudate.
  • FIG. 14 presents a SEM image of a Ni-Re on carbon black extrudate catalyst (without nitric acid addition).
  • FIG. 15 presents the results of EDX analysis of the Ni-Re on carbon black extrudate catalyst shown in FIG. 14.
  • FIG. 16 presents a SEM image of a Ni-Re on carbon black extrudate catalyst (with nitric acid addition).
  • FIG. 17 presents the results of EDX analysis of the Ni-Re on carbon black extrudate catalyst shown in FIG. 16.
  • the present invention generally relates to shaped porous carbon products and processes for preparing these products.
  • the shaped porous carbon products can be used, for example, as catalyst supports, chromatographic support material, filtration media, adsorbents, and the like.
  • the present invention also relates to catalyst compositions including these shaped porous carbon products, processes of preparing the catalyst compositions, and various processes of using the shaped porous carbon products and catalyst compositions.
  • the present invention provides shaped porous carbon products that exhibit high mechanical strength and are resistant to crushing and attrition during use. Further, the shaped porous carbon products possess excellent chemical stability to reactive solvents such as acids and other polar solvents even at elevated temperatures. The shaped porous carbon products are highly suited for liquid phase catalytic reactions because they provide for effective mass transfer of compounds having relatively large molecular volumes to and away the surface of the support.
  • the present invention also provides processes for preparing the shaped porous carbon products.
  • the shaped porous carbon products can be prepared from inexpensive and readily available materials which advantageously improves process economics.
  • the disclosed processes are suited for preparation of robust, mechanically strong, shaped porous carbon products through the use of water soluble organic binders. These processes avoid the use of organic solvents that require special handling and storage.
  • the present invention further provides catalyst compositions comprising the shaped porous carbon products as catalyst supports and processes for preparing these catalyst compositions.
  • the shaped porous carbon products exhibit a high degree of retention of the catalytically active component(s) of the catalyst compositions, which beneficially avoids or reduces the amount of catalytically active material leached into a liquid phase reaction medium. Further, the catalyst compositions possess a high degree of stability which is necessary for commodity chemical production.
  • the present invention provides processes utilizing shaped porous carbon products and catalyst compositions, such as for the conversion of biorenewably- derived molecules and intermediates for commodity applications (e.g., the selective oxidation of glucose to glucaric acid) or for applications requiring adsorption of compounds having relatively large molecular volumes.
  • the shaped porous carbon products exhibit a superior mechanical strength (e.g., mechanical piece crush strength and/or radial piece crush strength), and the use of catalyst compositions comprising the shaped porous carbon products of the present invention provides unexpectedly higher productivity, selectivity and/or yield in certain reactions when compared to similar catalysts compositions with different catalyst support materials.
  • the shaped porous carbon products of the present invention can be prepared with carbon black.
  • Carbon black materials include various subtypes including acetylene black, conductive black, channel black, furnace black, lamp black and thermal black.
  • the primary processes for manufacturing carbon black are the furnace and thermal processes.
  • carbon black is produced through the deposition of solid carbon particles formed in the gas phase by combustion or thermal cracking of petroleum products.
  • Carbon black materials are characterized by particles with diameters in the nanometer range, typically from about 5 to about 500 nm. These materials also have much lower surface areas, a higher concentration of mesopores, and lower ash and sulfur content when compared to activated carbons.
  • Carbon black materials are deployed commercially for many applications such as fillers, pigments, reinforcement materials and viscosity modifiers.
  • carbon black materials are not typically used as supports for chemical catalysis or adsorbents.
  • Low surface area carbon black materials can be considered non- optimal as support structures for catalytic applications because low surfaces areas are considered detrimental to effective dispersion of catalytically active components leading to poor catalytic activity.
  • activated carbons are thought to possess an optimum support structure for catalytic applications as they enable good dispersion of catalytically active components and effective adsorption and reaction of chemical reagents at the catalyst surface.
  • the use of carbon black as a catalyst support has been limited.
  • several groups have reported methods to modify carbon black materials. Reported modifications are centered on methods to increase the surface area of the carbon black materials.
  • U.S. Patent No. 6,337,302 describes a process to render a “virtually useless” carbon black into an activated carbon for commodity applications.
  • U.S. Patent No. 3,329,626 describes a process to convert carbon black materials with surface areas from 40-150 m 2 /g by steam activation into activated carbons with surface areas up to around 1200 m 2 /g.
  • shaped porous carbon catalyst supports for catalytic reactions including liquid and mixed phase reaction mediums.
  • the shaped porous carbon products of the present invention can be shaped into mechanically strong, chemically stable robust forms that can reduce resistance to liquid and gas flows, withstand desired process conditions, and provide for long term, stable catalytic operation.
  • These shaped porous carbon products provide high productivity and high selectivity during long term continuous flow operation under demanding reaction conditions including liquid phase reactions in which the catalyst composition is exposed to reactive solvents such as acids and water at elevated temperatures.
  • Carbon black may constitute a large portion of the shaped porous carbon product of the present invention.
  • the carbon black content of the shaped porous carbon product is at least about 35 wt.% or more such as at least about 40 wt.%, at least about 45 wt.%, at least about 50 wt.%, at least about 55 wt.%, at least about 60 wt.%, at least about 65 wt.%, or at least about 70 wt.%.
  • the carbon black content of the shaped porous carbon product is from about 35 wt.% to about 80 wt.%, from about 35 wt.% to about 75 wt.%, from about 40 wt.% to about 80 wt.%, or from about 40 wt.% to about 75 wt.%.
  • the carbon black materials used to prepare a shaped porous carbon product of the present invention have a BET specific surface area in the range of from about 20 m 2 /g to about 500 m 2 /g.
  • the BET specific surface area of the carbon black is in the range of from about 20 m 2 /g to about 350 m 2 /g, from about 20 m 2 /g to about 250 m 2 /g, from about 20 m 2 /g to about 225 m 2 /g, from about 20 m 2 /g to about 200 m 2 /g, from about 20 m 2 /g to about 175 m 2 /g, from about 20 m 2 /g to about 150 m 2 /g, from about 20 m 2 /g to about 125 m 2 /g, or from about 20 m 2 /g to about 100 m 2 /g, from about 25 m 2 /g to about 500 m 2 /g, from about 25
  • the specific surface area of carbon black materials is determined from nitrogen adsorption data using the Brunauer, Emmett and Teller (BET) Theory. See J. Am. Chem. Soc. 1938, 60, 309-331 and ASTM Test Methods ASTM 3663, D6556, or D4567 which are Standard Test Methods for Total and External Surface Area Measurements by Nitrogen Adsorption and are incorporated herein by reference.
  • BET Brunauer, Emmett and Teller
  • the carbon black materials generally have a mean pore diameter greater than about 5 nm, greater than about 10 nm, greater than about 12 nm, or greater than about 14 nm.
  • the mean pore diameter of the carbon black materials used to prepare the shaped porous carbon product is in the range of from about 5 nm to about 100 nm, from about 5 nm to about 70 nm greater, from 5 nm to about 50 nm, from about 5 nm to about 25 nm, from about 10 nm to about 100 nm, from about 10 nm to about 70 nm greater, from 10 nm to about 50 nm, or from about 10 nm to about 25 nm.
  • Such pore diameters enable effective transport of reactant molecules possessing large molecular volumes (such as biorenewably-derived molecules with 6-carbon atom frameworks) into and out of the pore structure of the catalytically active surface, thereby enabling enhanced activity.
  • the carbon black materials used to prepare the shaped porous carbon products of the present invention also generally have specific pore volumes greater than about 0.1 cm 3 /g, greater than about 0.2 cm 3 /g, or greater than about 0.3 cm 3 /g.
  • the specific pore volume of the carbon black materials can range from about 0.1 cm 3 /g to about 1 cm 3 /g, from about 0.1 cm 3 /g to about 0.9 cm 3 /g, from about 0.1 cm 3 /g to about 0.8 cm 3 /g, from about 0.1 cm 3 /g to about 0.7 cm 3 /g, from about 0.1 cm 3 /g to about 0.6 cm 3 /g, from about 0.1 cm 3 /g to about 0.5 cm 3 /g, from about 0.2 cm 3 /g to about 1 cm 3 /g, from about 0.2 cm 3 /g to about 0.9 cm 3 /g, from about 0.2 cm 3 /g to about 0.8 cm 3 /g, from about 0.2 cm 3 /g to about
  • Carbon black materials with these specific pore volumes provide a volume sufficient to provide uniform wetting and good dispersion of the catalytically active components while enabling sufficient contact between the reactant molecules and the catalytically active surface.
  • Mean pore diameters and pore volumes are determined in accordance with the procedures described in E.P. Barrett, L.G. Joyner, P. P. Halenda, J. Am. Chem. Soc. 1951, 73, 373-380 (BJH method), and ASTM D4222-03(2008) Standard Test Method for Determination of Nitrogen Adsorption and Desorption Isotherms of Catalysts and Catalyst Carriers by Static Volumetric Measurements, which are incorporated herein by reference.
  • the shaped porous carbon product comprises conductive carbon black and in some embodiments, the shaped porous carbon product is electrically conductive. In other embodiments, the shaped porous carbon product comprises nonconductive carbon black. In further embodiments, the shaped porous carbon product comprises nonconductive carbon black wherein the shaped porous carbon product does not exhibit a conductivity that is suitable for a conductive electrode.
  • the shaped porous carbon product comprises nonconductive carbon black and less than about 50%, less than about 40%, less than about 30%, less than about 20%, less than about 10%, less than about 5%, or less than about 1% conductive carbon black based on the total weight of the carbon black in the shaped porous carbon product and/or the total weight of the carbon black used to prepare the shaped porous carbon product.
  • the shaped porous carbon product comprises carbon black consisting of or consisting essentially of nonconductive carbon black.
  • the carbon black comprises a silica- bound or alumina-bound carbon black.
  • the shaped porous carbon product can further include graphite and/or a metal oxide (e.g., alumina, silica, titania, and the like).
  • the shaped porous carbon product comprising carbon black may be prepared by various methods such as dry powder pressing, drip casting, injection molding, 3D- printing, extrusion and other pelletizing and granulating methods.
  • dry powder pressing involves compressing carbon black particles in a press such as a hot or cold isostatic press or a calandering press.
  • Other pelletizing and granulating methods include tumbling carbon black particles and contacting the particles with a spray containing a binder.
  • Various methods of preparing the shaped porous carbon product comprise mixing water, carbon black, and a binder to form a carbon black mixture; forming the carbon black mixture to produce a shaped carbon black composite; heating the shaped carbon black composite to carbonize the binder to a water insoluble state and to produce a shaped porous carbon product.
  • a binder solution can be prepared by mixing water and the binder prior to mixing with carbon black.
  • the binder solution and carbon black mixture are relatively concentrated in binder.
  • the water content of the carbon black mixture is typically no more than about 80% by weight, no more than about 55% by weight, no more than about 40% by weight, or no more than about 25% by weight.
  • the water content of the carbon black mixture can be from about 5 wt.% to about 70 wt.%, from about 5 wt.% to about 55 wt.%, from about 5 wt.% to about 40 wt.%, or from about 5 wt.% to about 25 wt.%.
  • the viscosity of the binder solution can vary, for example, according to the binder content and can be readily adjusted to suit a particular shaping process by varying the relative quantities of solid and liquid components. For example, the viscosity of the aqueous solution can be varied by adjusting the amount of binder and type of binder utilized. Also in various methods, the water and binder can be mixed and heated to form the binder solution.
  • heating can enhance the amount of binder that can be incorporated into the binder solution and/or carbon black mixture (e.g., by increasing the solubility of the binder).
  • the water and binder can be heated to a temperature of at least about 50 °C, at least about 60°C, or at least about 70°C.
  • the water and binder can be heated to a temperature of from about 50°C to about 95 °C, from about 50°C to about 90°C, or from about 60°C to about 85 °C.
  • the binder solution After mixing and heating to form the binder solution, the binder solution can be cooled as needed prior to mixing with carbon black or prior to forming the shaped carbon black composite.
  • One method of preparing the shaped porous carbon product of the present invention comprises mixing carbon black particles with a solution comprising a binder to produce a slurry; forming the slurry (e.g., by extrusion) to produce a shaped carbon black composite and heating or pyrolyzing the shaped carbon black composite to carbonize the binder to produce the shaped porous carbon product.
  • a binder solution or binder and water are thoroughly mixed and blended with the carbon black to prepare a carbon black mixture (e.g., a slurry or a paste).
  • the weight ratio of binder to carbon black in the carbon black mixture is typically at least about 1:4, at least about 1:3, at least about 1:2, at least about 1:1, or at least 1.5:1.
  • the weight ratio of binder to carbon black in the carbon black mixture can also be from about 1 :4 to about 3:1, from about 1:4 to about 1:1, from about 1:3 to about 2:1, from about 1:3 to about 1:1, or about 1:1.
  • the carbon black content of the carbon black mixture is at least about 35 wt.% or more such as at least about 40 wt.%, at least about 45 wt.%, as at least about 50 wt.%, as at least about 55 wt.%, at least about 60 wt.%, at least about 65 wt.%, or at least about 70 wt.% on a dry weight basis.
  • the carbon black content of the carbon black mixture is from about 35 wt.% to about 80 wt.%, from about 35 wt.% to about 75 wt.%, from about 40 wt.% to about 80 wt.%, or from about 40 wt.% to about 75 wt.% on a dry weight basis.
  • the binder content of the carbon black mixture is typically at least about 10 wt.%, at least about 20 wt.%, at least about 25 wt.%, at least about 30 wt.%, at least about 35 wt.%, at least about 40 wt.%, or at least 45 wt.% on a dry weight basis.
  • the binder content of the carbon black mixture is from about 10 wt.% to about 50 wt.%, from about 10 wt.% to about 45 wt.%, from about 15 wt.% to about 50 wt.%, from about 20 wt.% to about 50 wt.%, or from about 20 wt.% to about 45 wt.% on a dry weight basis.
  • Various methods of preparing the shaped porous carbon products can further comprise pressing or kneading the carbon black mixture. Pressing or kneading the carbon black mixture compacts the mixture and can reduce the water content of the mixture.
  • Pressing or kneading of the water, carbon black and binder can be conducted simultaneously with the mixing of the water, carbon black and binder.
  • one method of mixing the water, carbon black, and binder and simultaneously pressing the resulting carbon black mixture can be conducted using a mixer muller.
  • the resulting carbon black mixture is formed into a shaped carbon black composite structure of the desired shape and dimensions by a forming technique such as extrusion, pelletizing, pilling, tableting, cold or hot isostatic pressing, calandering, injection molding, 3D printing, drip casting, or other methods known to produce shaped structures.
  • a forming technique such as extrusion, pelletizing, pilling, tableting, cold or hot isostatic pressing, calandering, injection molding, 3D printing, drip casting, or other methods known to produce shaped structures.
  • Forming methods such as cold or hot isostatic pressing and 3D printing may or may not require a binder.
  • the shaped porous carbon product can be shaped and sized for use in known industrial reactor formats such as batch slurry, continuous slurry-based stirred tank reactors, fixed beds, ebulated beds and other known industrial reactor formats.
  • the shaped porous carbon product may be formed into various shapes including spheres, beads, cylinders, pellets, multi-lobed shapes, rings, stars, ripped cylinders, triholes, alphas, wheels, etc.
  • the shaped porous carbon product may be formed into amorphous, non-geometric, and random shapes as well as unsymmetrical shapes like hiflow rings and cones and alpha- rings.
  • the mean diameter of the shaped porous carbon product is typically at least about 50 pm (0.05 mm), at least about 500 pm (0.5 mm), at least about 1,000 pm (1 mm), at least about 10,000 pm (10 mm) or larger to accommodate process requirements.
  • the carbon black mixture comprising carbon black particles and the binder are dispensed as droplets into a casting bath to form the shaped carbon black composite, which is then separated from the casting bath.
  • Carbon black mixture droplets of a tailored diameter may be dispensed through a sized nozzle and dropped into a bath to produce solidified, spherically- shaped carbon black composite of various diameters.
  • the binder comprises an alginate (or alginate in combination with another carbohydrate binder as described herein) which can be dispensed into a bath containing a reagent to cause solidification such as an ionic salt (e.g., calcium salt) as described in U.S. Patent No. 5,472,648, the entire contents of which are incorporated herein by reference.
  • a reagent to cause solidification such as an ionic salt (e.g., calcium salt) as described in U.S. Patent No. 5,472,648, the entire contents of which are incorporated herein by reference.
  • the droplets are subsequently allowed to remain substantially free in the ionic solution until the required degree of solidification and consolidation has been attained.
  • the drip casting bath utilized may be, for example, an oil bath, or a bath to cause freeze drying.
  • the temperature of the oil is sufficiently high that the binder is thermally set (e.g., causes the binder to convert to a three-dimensional gel).
  • the resultant beads are typically dried by vacuum treatment.
  • the shaped carbon black composites resulting from such dip casting methods are subsequently pyrolyzed.
  • the carbon black mixture further comprises a forming adjuvant.
  • the forming adjuvant can comprise a lubricant.
  • Suitable forming adjuvants include, for instance, lignin or lignin derivatives.
  • porogens may be mixed with the carbon black and binder to modify and attain the desired pore characteristics in the shaped porous carbon product.
  • Other methods of modifying the porosity of the shaped porous carbon product include mixing two or more different carbon black starting materials (e.g., carbon blacks having different shape and/or size that pack irregularly resulting in multimodal pore size distributions, or carbon blacks from different sources/suppliers, or mixing carbon black powders carbon.
  • Other methods of modifying the porosity of the shaped porous carbon product include multiple thermal processing and/or multiple compounding (e.g., pyrolysis of a shaped carbon black composite of carbon powder and binder, then mixing with fresh carbon black powder and binder and pyrolyzing the resultant composite again).
  • the composite may be dried to dehydrate the composite. Drying may be achieved by heating the composite at atmospheric pressure and temperatures typically of from about room temperature (e.g., about 20°C) to about 150°C, from about 40°C to about 120°C, or from about 60°C to about 120°C. Other methods of drying may be utilized including vacuum drying, freeze drying, and desiccation. When using certain preparation methods for forming (e.g., tableting, pressing), no drying step may be required.
  • the shaped carbon black composite e.g., resulting from extrusion, pelletizing, pilling, tableting, cold or hot isostatic pressing, calandering, injection molding, 3D printing, drip casting, and other forming methods
  • an inert e.g., an inert nitrogen atmosphere
  • oxidative, or reductive atmosphere to carbonize at least a portion of the binder to a water insoluble state and produce a shaped porous carbon product.
  • the heat treatment is typically conducted at a temperature of from about 250°C to about 1,000°C, from about 300°C to about 900°C, from about 300°C to about 850°C, from about 300°C to about 800°C, from about 350°C to about 850°C, from about 350°C to about 800°C, from about 350°C to about 700°C, from about 400°C to about 850°C or from about 400°C to about 800°C.
  • lower carbonization temperatures can lead to slow leaching of the remnants of the binder from the shaped porous carbon product which reduces mechanical strength over extended periods of use in catalytic reactions.
  • the heat treatment is conducted at higher carbonization temperatures within the ranges specified above.
  • the resultant shaped porous carbon product may be washed after the heat treatment to remove impurities.
  • shaped porous carbon products of the present invention comprise a binder or carbonization product thereof in addition to carbon black.
  • Various references including U.S. Patent No. 3,978,000, describe the use of acetone soluble organic polymers and thermosetting resin as binders for shaped carbon supports.
  • the use of flammable organic solvents and expensive thermosetting resins is not desirable or economical for manufacturing large quantities of shaped porous carbon product.
  • Mechanically- strong, shaped porous carbon products of the invention can be prepared by the use of an effective binder.
  • the use of an effective binder provides a robust shaped porous carbon product capable of withstanding the prevailing conditions within continuous liquid phase flow environments such as in conversions of biorenewably-derived molecules or intermediates in which the liquid phase may contain water or acidic media.
  • the shaped porous carbon product is mechanically and chemically stable to enable long-term operation without significant loss in catalyst performance.
  • the use of an effective binder provides a robust shaped porous carbon product capable of withstanding elevated temperatures.
  • binders for the preparation of mechanically strong shaped porous carbon products.
  • a binder is deemed water soluble if the solubility at 50°C is at least about 1 wt.%, preferably at least about 2 wt.%.
  • Aqueous solutions of organic binders are highly amenable to commercial manufacturing methods. Organic binders that dissolve in aqueous solutions enable good mixing and dispersion when contacted with the carbon black materials. These binders also avoid safety and processing issues associated with large-scale use of organic solvents which may be flammable and require special storage and handling. Also, these binders are relatively inexpensive when compared to costly polymer-based binders. As such, in various embodiments, the carbon black mixtures do not contain water immiscible solvents.
  • the water soluble organic binder comprises a carbohydrate or derivative thereof, which may be a monomeric or oligomeric or polymeric carbohydrate (also known as saccharides, oligosaccharide and polysaccharides).
  • carbohydrate or derivative thereof may be a monomeric or oligomeric or polymeric carbohydrate (also known as saccharides, oligosaccharide and polysaccharides).
  • Derivatives of carbohydrates are also included wherein a functional group or groups bound to the carbohydrate may be exchanged or derivatized.
  • Such derivatives may be acidic or charged carbohydrates such as alginic acid or alginate salts, or pectin, or aldonic acids, aldaric acids, uronic acids, xylonic or xylaric acids (or oligomers, or polymers or salts thereof).
  • Other derivatives include sugar alcohols and polymeric forms thereof (e.g., sorbitol, mannitol, xylitol or polyols derived from carbohydrates).
  • the carbohydrate binder may be used in the form of syrups such as molasses or corn syrups or soluble starches or soluble gum or modified versions thereof.
  • the water soluble organic binder comprises a saccharide selected from the group consisting of a monosaccharide, a disaccharide, an oligosaccharide, a derivative thereof, and any combination thereof.
  • the water soluble organic binder comprises: (i) a saccharide selected from the group consisting of a monosaccharide, a disaccharide, an oligosaccharide, a derivative thereof, and any combination thereof and (ii) a polymeric carbohydrate, a derivative of a polymeric carbohydrate, or a non-carbohydrate synthetic polymer, or any combination thereof.
  • the weight ratio of (i) the saccharide to (ii) the polymeric carbohydrate, derivative of the polymeric carbohydrate, or the non-carbohydrate synthetic polymer, or combination thereof can be from about 5:1 to about 50:1, from about 10:1 to about 25:1, or from about 10:1 to about 20:1.
  • the water soluble organic binder comprises a monosaccharide.
  • the monosaccharide can be selected from the group consisting of glucose, fructose, hydrates thereof, syrups thereof (e.g., corn syrups, molasses, and the like) and combinations thereof.
  • the water soluble organic binder comprises a disaccharide. Disaccharides include for example, maltose, sucrose, syrup thereof, and combinations thereof.
  • the binder can comprise a polymeric carbohydrate, derivative of a polymeric carbohydrate, or a non-carbohydrate synthetic polymer, or any combination thereof.
  • the binder comprises a polymeric carbohydrate, derivative of a polymeric carbohydrate, or any combination thereof.
  • the polymeric carbohydrate or derivative of the polymeric carbohydrate can comprise a cellulosic compound.
  • Cellulosic compounds include, for example, methylcellulose, ethylcellulose, ethylmethylcellulose, hydroxyethylcellulose, hydro xypropylcellulose, methylhydroxyethylcellulose, ethylhydroxyethylcellulose, hydroxypropylmethylcellulose, carboxymethylcellulose, and mixtures thereof.
  • polymeric carbohydrate or derivative of the polymeric carbohydrate derivative can be selected from the group consisting of alginic acid, pectin, aldonic acids, aldaric acids, uronic acids, sugar alcohols, and salts, oligomers, and polymers thereof.
  • the polymeric carbohydrate or derivative of the polymeric carbohydrate can also comprise a starch or a soluble gum.
  • the water soluble organic binder comprises a cellulosic compound.
  • the binder comprises an acidic polysaccharide such as alginic acid, pectin or a salt thereof.
  • the binder comprises a soluble cellulose such as an alkyl cellulose (e.g., hydroxyethylcellulose, hydroxypropylcellulose, hydroxyethylmethylcellulose, hydroxypropylmethylcellulose, and carboxymethylcellulo se) .
  • the binder comprises a non-carbohydrate synthetic polymer.
  • Water soluble polymers or copolymers may be used as binders.
  • polyacrylic acid polyvinyl alcohols, polyvinylpyrrolidones, polyvinyl acetates, polyacrylates, polyethers (such as, for example, polyethyelene glycol and the like) and copolymers (which can be block copolymers comprising a water insoluble block monomers and water soluble block monomers) derived therefrom, and blends thereof.
  • the water soluble copolymer may be a block copolymer comprising a water soluble polymer block and a second polymer block which may be hydrophobic and amenable to carbonization (e.g., polystyrene).
  • polymer dispersions in water are used as binders, i.e., non-water soluble polymers dispersed in water (with the aid of surfactants) such as commercial polyvinyl alcohol, polyacrylonitrile, polyacrylonitrile-butadiene-styrene, phenolic polymer or lignin polymer dispersions.
  • copolymers consisting of a water- soluble branch (e.g., polyacrylic acid) and a hydrophobic branch (e.g., polymaleic anhydride, polystyrene) enabling water solubility of the copolymer and enabling carbonization of the hydrophobic branch without depolymerisation upon pyrolysis.
  • a water- soluble branch e.g., polyacrylic acid
  • a hydrophobic branch e.g., polymaleic anhydride, polystyrene
  • Carbohydrates or derivatives thereof, water soluble polymers and polymer dispersions in water may be used together in various combinations.
  • water soluble organic binders that may be used in combination with the saccharide binders include water soluble celluloses and starches (e.g., hydroxyethylcellulose, hydro xypropylcellulose, hydro xyethylmethylcellulose, hydroxypropylmethylcellulose, carboxymethylcellulose), water soluble alcohols (e.g., sorbitol, xylitol, polyvinylalcohols), water soluble acetals (e.g., polyvinylbutyral), water soluble acids (e.g., stearic acid, citric acid, alginic acid, aldonic acids, aldaric acids, uronic acids, xylonic or xylaric acids (or oligomers, or polymers or salts or esters thereof) polyvinyl acrylic acids (or salts or esters thereof).
  • water soluble celluloses and starches e.g., hydroxyethylcellulose, hydro xypropylcellulose, hydro x
  • the combination of water soluble organic binders comprises a cellulosic compound and a monosaccharide.
  • the cellulosic compound comprises hydroxyethylcellulose, or methylcellulose and the monosaccharide comprises a glucose, fructose or hydrate thereof (e.g., glucose).
  • one combination comprises glucose and hydroxyethylcellulose, which provides shaped porous carbon products with enhanced mechanical strength, particularly when processed at high carbonization temperatures.
  • the combination of water soluble organic binders comprises a monosaccharide and a water-soluble alcohol such as sorbitol, mannitol, xylitol or a polyvinyl alcohol.
  • the combination of water soluble organic binders comprises a monosaccharide, and a water-soluble acid such as stearic acid, pectin, alginic acid or polyacrylic acid (or salts thereof).
  • the combination of water soluble organic binders comprises a monosaccharide and a water-soluble ester such as a polyacrylate or polyacetate.
  • the combination of water soluble organic binders comprises a monosaccharide and a water- soluble acetal such as a polyacetal (e.g., polyvinylbutyral).
  • water soluble compounds may be used in combination with a carbohydrate or polymeric binder. Combining a carbohydrate or other binder with selected other water soluble organic compounds can provide advantages in the preparation of and in the properties of the resultant shaped porous carbon product.
  • water soluble organic compounds such as stearic acid or stearates such as Zr or NFU stearate can provide lubrication during the forming process.
  • Wetting agents may be added (e.g., GLYDOL series available commercially from Zschimmer and Schwarz).
  • Porogens may also be added in combination with the binder (or binders). Porogens are typically added to occupy a specific molecular volume within the formulation such that after the shaping and thermal processing the porogen will be pyrolyzed leaving pores of a certain volume and diameter within the shaped product. The presence of such pores can be beneficial to performance. For example, when used as a catalyst support the presence of such pores can lead to more efficient diffusion (of reactants and products) to and from the catalytically active surfaces. More efficient access and egress for the reactants and products can lead to improvements in catalyst productivity and selectivity. Porogens are typically oligomeric (e.g., dimer, trimers of higher order oligomers) or polymeric in nature.
  • Water soluble organic compounds such as water soluble linear and branched polymers and cross- linked polymers are suitable for use as porogens.
  • Polyacrylates such as weakly cross-linked polyacrylates known as superabsorbers
  • polyvinyl alcohols such as weakly cross-linked polyacrylates known as superabsorbers
  • polyvinylacetates such as polyvinylacetates
  • polyesters such as polyethylene glycol
  • polyethers such as polyvinyl alcohols
  • copolymers which may be block copolymers
  • the water soluble copolymer may be a block copolymer comprising a water soluble polymer block and a second polymer block which may be hydrophobic and amenable to carbonization (e.g., polystyrene).
  • polymer dispersions in water are used as binders, i.e., non- water soluble polymers dispersed in water (with the aid of surfactants) such as commercial polyvinyl alcohol, polyacrylonitrile, polyacrylonitrile-butadiene-styrene, phenolic polymer dispersions.
  • binders i.e., non- water soluble polymers dispersed in water (with the aid of surfactants) such as commercial polyvinyl alcohol, polyacrylonitrile, polyacrylonitrile-butadiene-styrene, phenolic polymer dispersions.
  • copolymers consisting of a water-soluble branch (e.g., polyacrylic acid) and a hydrophobic branch (e.g., polymaleic anhydride, polystyrene) enabling water solubility of the copolymer and enabling carbonization of the hydrophobic branch without depolymerisation upon pyrolysis.
  • Carbohydrates or derivatives thereof (disaccharides, oligosaccharides, polysaccharides such as sucrose, maltose, trihalose, starch, cellubiose, celluloses), water soluble polymers and polymer dispersions in water may be used together in any combination as a porogen to attain a shaped porous carbon black product having the desired pore size and volume characteristics described herein.
  • Porogens can also be added as gels (e.g., pre-gelated superabsorber) or water insoluble incompressible solids (e.g., polystyrene microbeads, lignins, phenolic polymers) or expandable porogens such as EXP ANSEL microspheres available from Akzo Nobel Pulp and Performance (Sundsvall, Sweden).
  • the molecular weight of the oligomer or polymer can be also chosen to design a desired pore sizes and volume characteristics of the shaped carbon product of the invention.
  • the desired shaped carbon product may have a monomodal, bimodal or multimodal pore size distribution as a consequence of addition of a porogen.
  • a bimodal or multimodal pore size distribution may consist of a high percentage of pores between 10 and 100 nm and additionally the presence of pores >100 nm.
  • Such a pore structure may provide performance advantages.
  • the presence of a such a pore size distribution can lead to more efficient diffusion (of reactants and products) through the larger pore (transport pores) to and from catalytically active surfaces which reside in the pores sized between 10 and 100 nm. More efficient access and egress for the reactants and products can lead to improvements in catalyst productivity, selectivity, and/or yield.
  • the resulting shaped porous carbon product comprises carbon black and carbonized binder. More generally, the shaped porous carbon product can comprise a carbon agglomerate. Without being bound by any particular theory, it is believed that the carbon agglomerate comprises carbon aggregates or particles that are physically bound or entangled at least in part by the carbonized binder. Moreover, and without being bound by any particular theory, the resulting agglomerate may include chemical bonding of the carbonized binder with the carbon aggregates or particles.
  • the carbonized binder comprises a carbonization product of a water soluble organic binder as described herein. Carbonizing the binder during preparation of the shaped porous carbon product may reduce the weight of the shaped carbon black composite from which it is formed. Accordingly, in various embodiments, the carbonized binder content of the shaped porous carbon product is from about 10 wt.% to about 50 wt.%, from about 20 wt.% to about 50 wt.%, from about 25 wt.% to about 40 wt.%, or from about 25 wt.% to about 35 wt.% (e.g., 30 wt.%).
  • the specific surface area (BET surface area), mean pore diameter, and specific pore volume of the shaped porous carbon products are generally comparable to that exhibited by the carbon black material used to prepare the products. However, the preparation process can lead to a reduction or an increase in these characteristics of the products as compared to the carbon black material (e.g., about a 10-50% or 10-30% decrease or increase).
  • the shaped porous carbon product has a specific surface area from about 20 m 2 /g to about 500 m 2 /g, from about 20 m 2 /g to about 350 m 2 /g, from about 20 m 2 /g to about 250 m 2 /g, from about 20 m 2 /g to about 225 m 2 /g, from about 20 m 2 /g to about 200 m 2 /g, from about 20 m 2 /g to about 175 m 2 /g, from about 20 m 2 /g to about 150 m 2 /g, from about 20 m 2 /g to about 125 m 2 /g, or from about 20 m 2 /g to about 100 m 2 /g, from about 25 m 2 /g to about 500 m 2 /g, from about 25 m 2 /g to about 350 m 2 /g, from about 25 m 2 /g to about 250 m 2 /g, from about 25 m
  • the specific surface area of the shaped porous carbon product is determined from nitrogen adsorption data using the Brunauer, Emmett and Teller. See the methods described in J. Am. Chem. Soc. 1938, 60, 309-331 and ASTM Test Methods D3663, D6556 or D4567, which are Standard Test Methods for Surface Area Measurements by Nitrogen Adsorption.
  • the shaped porous carbon products typically have a mean pore diameter greater than about 5 nm, greater than about 10 nm, greater than about 12 nm, or greater than about 14 nm.
  • the mean pore diameter of the shaped porous carbon product is from about 5 nm to about 100 nm, from about 5 nm to about 70 nm, from 5 nm to about 50 nm, from about 5 nm to about 25 nm, from about 10 nm to about 100 nm, from about 10 nm to about 70 nm, from 10 nm to about 50 nm, or from about 10 nm to about 25 nm.
  • the shaped porous carbon products of the present invention have specific pore volumes of the pores having a diameter of 1.7 nm to 100 nm as measured by the BJH method that is generally greater than about 0.1 cm 3 /g, greater than about 0.2 cm 3 /g, or greater than about 0.3 cm 3 /g.
  • the shaped porous carbon products have a specific pore volume of the pores having a diameter of 1.7 nm to 100 nm as measured by the BJH method that is from about 0.1 cm 3 /g to about 1.5 cm 3 /g, from about 0.1 cm 3 /g to about 0.9 cm 3 /g, from about 0.1 cm 3 /g to about 0.8 cm 3 /g, from about 0.1 cm 3 /g to about 0.7 cm 3 /g, from about 0.1 cm 3 /g to about 0.6 cm 3 /g, from about 0.1 cm 3 /g to about 0.5 cm 3 /g, from about 0.2 cm 3 /g to about 1 cm 3 /g, from about 0.2 cm 3 /g to about 0.9 cm 3 /g, from about 0.2 cm 3 /g to about 0.8 cm 3 /g, from about 0.2 cm 3 /g to about 0.7 cm 3 /g, from about 0.2 cm 3 /g to about 0.6 cm 3 /g, from
  • Mean pore diameters and specific pore volumes are determined in accordance with the procedures described in E.P. Barrett, L.G. Joyner, P. P. Halenda, J. Am. Chem. Soc. 1951, 73, 373-380 (BJH method), and ASTM D4222-03(2008) Standard Test Method for Determination of Nitrogen Adsorption and Desorption Isotherms of Catalysts and Catalyst Carriers by Static Volumetric Measurements, which are incorporated herein by reference.
  • the magnitude of the specific surface area is generally proportional to the concentration of micropores in the shaped porous carbon product structure.
  • the shaped porous carbon products generally possess a low concentration of pores having a mean diameter less than 1.7 nm.
  • pores having a mean diameter less than 1.7 nm constitute no more than about 10%, no more than about 5%, no more than about 4%, no more than about 3%, or no more than about 2.5% of the pore volume of the shaped porous carbon product.
  • the pore size distribution of the shaped porous carbon products is such that peaks below about 10 nm or about 5 nm are not observed.
  • the shaped porous carbon products can have a pore size distribution such that the peak of the distribution is at a diameter greater than about 5 nm, greater than about 7.5 nm, greater than about 10 nm, greater than about 12.5 nm, greater than about 15 nm, or greater than about 20 nm.
  • the shaped porous carbon product can have a pore size distribution such that the peak of the distribution is at a diameter less than about 100 nm, less than about 90 nm, less than about 80 nm, or less than about 70 nm.
  • the shaped porous carbon product advantageously exhibits a high concentration of mesopores between about 10 nm to about 100 nm, between about 20 nm to about 100 nm, or between about 10 nm to about 50 nm. Accordingly, in various embodiments, at least about 50%, at least about 60%, at least about 70%, at least about 80%, at least about 90%, at least about 95% of the pore volume of the shaped porous carbon product, as measured by the BJH method on the basis of pores having a diameter from 1.7 nm to 100 nm, is attributable to pores having a mean pore diameter of from about 10 nm to about 100 nm.
  • At least about 35%, at least about 40%, at least about 45%, or at least about 50% of the pore volume of the shaped porous carbon product, as measured by the BJH method on the basis of pores having a diameter from 1.7 nm to 100 nm, is attributable to pores having a mean pore diameter of from about 20 nm to about 90 nm or from about 10 nm to about 50 nm.
  • the shaped porous carbon product exhibits a relatively low concentration of pores less than 10 nm, less than 5 nm, or less than 3 nm.
  • no more than about 10%, no more than about 5%, or no more than about 1% of the pore volume of the shaped porous carbon product, as measured by the BJH method on the basis of pores having a diameter from 1.7 nm to 100 nm is attributable to pores having a mean pore diameter less than 10 nm, less than 5 nm, or less than 3 nm.
  • the shaped porous carbon products described herein are mechanically strong and stable. Crush strength represents the resistance of a solid to compression, and is an important property in the industrial use of the shaped porous carbon product as described herein.
  • Instruments for measuring the piece crush strength of individual solid particles generally include a dynamometer that measures the force progressively applied to the solid during the advancement of a piston. The applied force increases until the solid breaks and collapses into small pieces and eventually powder. The corresponding value of the collapsing force is defined as piece crush strength and is typically averaged over multiple samples. Standard protocols for measuring crush strength are known in the art. For example, the mechanical strength of the shaped porous carbon product can be measured by piece crush strength test protocols described by ASTM D4179 or ASTM D6175, which are incorporated herein by reference. Some of these test methods are reportedly limited to particles of a defined dimensional range, geometry, or method of manufacture. However, crush strength of irregularly shaped particles and particles of varying dimension and manufacture may nevertheless be adequately measured by these and similar test methods.
  • the shaped porous carbon product prepared in accordance with the present invention has a radial piece crush strength of greater than about 4.4 N/mm (1 lb/mm), greater than about 8.8 N/mm (2 lbs/mm), or greater than about 13.3 N/mm (3 lbs/mm).
  • the radial piece crush strength of the shaped porous carbon product is from about 4.4 N/mm (1 lb/mm) to about 88 N/mm (20 lbs/mm), from about 4.4 N/mm (1 lb/mm) to about 66 N/mm (15 lbs/mm), or from about 8.8 N/mm (2 lb/mm) to about 44 N/mm (10 lbs/mm).
  • the measured force is relative to the dimension of the solid perpendicular to the applied load, which typically can range from about 0.5 mm to about 20 mm, from about 1 mm to about 10 mm, or from about 1.5 mm to 5 mm.
  • the radial piece crush strength is measured by applying the load perpendicular to the longest dimension of the solid.
  • shaped porous carbon product typically has a piece crush strength greater than about 22 N (5 lbs), greater than about 36 N (8 lbs), or greater than about 44 N (10 lbs).
  • shaped porous carbon product may have a piece crush strength from about 22 N (5 lbs) to about 88 N (20 lbs), from about 22 N (5 lbs) to about 66 N (15 lbs), or from about 33 N (7.5 lbs) to about 66 N (15 lbs).
  • the shaped porous carbon products In addition to crush strength, the shaped porous carbon products also exhibit desirable attrition and abrasion resistance characteristics. There are several test methods suitable for determining the attrition and abrasion resistance of the shaped porous carbon products and catalysts produced in accordance with the present disclosure. These methods are a measure of the propensity of the material to produce fines in the course of transportation, handling, and use on stream.
  • Attrition index as determined in accordance with ASTM D4058-96 (Standard Test Method for Attrition and Abrasion of Catalysts and Catalyst Carriers), which is a measurement of the resistance of a material (e.g., extrudate or catalyst particle) to attrition wear due to the repeated striking of the particle against hard surfaces within a specified rotating test drum and is incorporated herein by reference.
  • This test method is generally applicable to tablets, extrudates, spheres, granules, pellets as well as irregularly shaped particles typically having at least one dimension larger than about 1/16 in. (1.6 mm) and smaller than about 3/4 in. (19 mm), although attrition measurements can also be performed on larger size materials.
  • Variable and constant rate rotating cylinder abrasimeters designed according to ASTM D4058-96 are readily available.
  • the material to be tested is placed in drum of the rotating test cylinder and rolled at from about 55 to about 65 RPM for about 35 minutes. Afterwards, the material is removed from test cylinder and screened on a 20-mesh sieve. The percentage (by weight) of the original material sample that remains on the 20-mesh sieve is referred to as the "percent retained. "
  • the shaped porous carbon products (e.g., extrudates) and catalysts prepared therefrom typically exhibit a rotating drum attrition index as measured in accordance with ASTM D4058-96 or similar test method such that the percent retained is greater than about 85%, greater than about 90%, greater than about 92%, greater than about 95%, greater than about 97%, or greater than about 99% by weight.
  • a percent retained result of greater than about 97 % is indicative of materials with exceptional mechanical stability and robust structure particularly desirable for industrial applications.
  • Abrasion loss is an alternate measurement of the resistance of the shaped porous carbon products (e.g., extrudates) and catalysts prepared therefrom. As with the attrition index, the results of this test method can be used as a measure of fines production during the handling, transportation, and use of the material.
  • Abrasion loss is a measurement of the resistance of a material to attrition wear due to the intense horizontal agitation of the particles within the confines of a 30-mesh sieve. Typically, the material to be tested is first de-dusted on a 20-mesh sieve by gently moving the sieve side-to-side at least about 20 times.
  • the de-dusted sample is weighed and then transferred to the inside of a clean, 30-mesh sieve stacked above a clean sieve pan for the collection of fines.
  • the complete sieve stack is then assembled onto a sieve shaker (e.g., RO-Tap RX-29 sieve shaker from W.S. Tyler Industrial Group, Mentor, OH), covered securely and shaken for about 30 minutes.
  • the collected fines generated are weighed and divided by the de-dusted sample weight to provide a sample abrasion loss in percent by weight.
  • the shaped porous carbon products (e.g., extrudates) and catalysts prepared therefrom typically exhibit a horizontal agitation sieve abrasion loss of less than about 5%, less than about 3%, less than about 2%, less than about 1%, less than about 0.5%, less than about 0.2%, less than about 0.1%, less than about 0.05%, or less than about 0.03% by weight.
  • An abrasion loss result of less than about 2% is particularly desired for industrial applications.
  • the shaped porous carbon product comprises (a) carbon black and (b) a carbonized binder comprising a carbonization product of a water soluble organic binder, wherein the shaped porous carbon product has a BET specific surface area from about 20 m 2 /g to about 500 m 2 /g or from about 25 m 2 /g to about 250 m 2 /g, a mean pore diameter greater than about 10 nm, a specific pore volume greater than about 0.1 cm 3 /g, a radial piece crush strength greater than about 4.4 N/mm (1 lb/mm), and a carbon black content of at least about 35 wt.%.
  • the shaped porous carbon product comprises a carbon agglomerate, wherein the shaped porous carbon product has a mean diameter of at least about 50 pm, a BET specific surface area from about 20 m 2 /g to about 500 m 2 /g or from about 25 m 2 /g to about 250 m 2 /g, a mean pore diameter greater than about 10 nm, a specific pore volume greater than about 0.1 cm 3 /g, and a radial piece crush strength greater than about 4.4 N/mm (1 lb/mm).
  • the shaped porous carbon product of the present invention may also have a low sulfur content.
  • the sulfur content of the shaped porous carbon product may be no greater than about 1 wt.% or about 0.1 wt.%.
  • the shaped porous carbon product can comprises (a) carbon black and (b) a carbonized binder comprising a carbonization product of a water soluble organic binder and wherein the shaped porous carbon product has a BET specific surface area from about 20 m 2 /g to about 500 m 2 /g, a mean pore diameter greater than about 5 nm, a specific pore volume greater than about 0.1 cm 3 /g, a radial piece crush strength greater than about 4.4 N/mm (1 lb/mm), a carbon black content of at least about 35 wt.%, and a carbonized binder content from about 20 wt.% to about 50 wt.%.
  • a shaped porous carbon product of the present invention comprises (a) carbon black and (b) a carbonized binder comprising a carbonization product of a water soluble organic binder, wherein the shaped porous carbon product has a BET specific surface area from about 20 m 2 /g to about 500 m 2 /g or from about 25 m 2 /g to about 250 m 2 /g, a mean pore diameter greater than about 10 nm, a specific pore volume greater than about 0.1 cm 3 /g, and a radial piece crush strength greater than about 4.4 N/mm (1 lb/mm), and a carbon black content of at least about 35 wt.%, and wherein the shaped porous carbon product has a pore volume measured on the basis of pores having a diameter from 1.7 nm to 100 nm and at least about 35% of the pore volume is attributable to pores having a mean pore diameter of from about 10 nm to about 50 nm
  • Yet another shaped porous carbon product of the present invention comprises a carbon agglomerate, wherein the shaped porous carbon product has a mean diameter of at least about 50 pm, a BET specific surface area from about 20 m 2 /g to about 500 m 2 /g or from about 25 m 2 /g to about 250 m 2 /g, a mean pore diameter greater than about 10 nm, a specific pore volume greater than about 0.1 cm 3 /g, and a radial piece crush strength greater than about 4.4 N/mm (1 lb/mm), and wherein the shaped porous carbon product has a pore volume measured on the basis of pores having a diameter from 1.7 nm to 100 nm and at least about 35% of the pore volume is attributable to pores having a mean pore diameter of from about 10 nm to about 50 nm.
  • Methods of the present invention include various combinations of the features, characteristics, and method steps described herein.
  • various methods for preparing the shaped porous carbon product include mixing and heating water and a water soluble organic binder to form a binder solution, wherein the water and binder are heated to a temperature of at least about 50°C, and wherein the binder comprises: (i) a saccharide selected from the group consisting of a monosaccharide, a disaccharide, an oligosaccharide, a derivative thereof, and any combination thereof and (ii) a polymeric carbohydrate, a derivative of a polymeric carbohydrate, or a non-carbohydrate synthetic polymer, or any combination thereof; mixing carbon black particles with the binder solution to produce a carbon black mixture; forming the carbon black mixture to produce a shaped carbon black composite; and heating the shaped carbon black composite to carbonize the binder to a water insoluble state and to produce a shaped porous carbon product.
  • Other methods for preparing the shaped porous carbon product include mixing water, carbon black, and a water soluble organic binder to form a carbon black mixture, wherein the binder comprises: (i) a saccharide selected from the group consisting of a monosaccharide, a disaccharide, an oligosaccharide, a derivative thereof, and any combination thereof and (ii) a polymeric carbohydrate, a derivative of a polymeric carbohydrate, or a non-carbohydrate synthetic polymer, or any combination thereof; forming the carbon black mixture to produce a shaped carbon black composite; and heating the shaped carbon black composite to carbonize the binder to a water insoluble state and to produce a shaped porous carbon product.
  • the binder comprises: (i) a saccharide selected from the group consisting of a monosaccharide, a disaccharide, an oligosaccharide, a derivative thereof, and any combination thereof and (ii) a polymeric carbohydrate, a derivative
  • Further methods include mixing water, carbon black, and a binder to form a carbon black mixture, wherein the binder comprises a saccharide selected from the group consisting of a monosaccharide, a disaccharide, an oligosaccharide, a derivative thereof, or any combination thereof and wherein the weight ratio of the binder to carbon black in the carbon black mixture is at least about 1:4, at least about 1:3, at least about 1:2, at least about 1:1, or at least 1.5:1; forming the carbon black mixture to produce a shaped carbon black composite; and heating the shaped carbon black composite to carbonize the binder to a water insoluble state and to produce a shaped porous carbon product.
  • the binder comprises a saccharide selected from the group consisting of a monosaccharide, a disaccharide, an oligosaccharide, a derivative thereof, or any combination thereof and wherein the weight ratio of the binder to carbon black in the carbon black mixture is at least about 1:4, at least about 1:3, at least
  • Still other methods include mixing water, carbon black, and a binder to form a carbon black mixture, wherein the binder comprises a saccharide selected from the group consisting of a monosaccharide, a disaccharide, an oligosaccharide, a derivative thereof, or any combination thereof and wherein the water content of the carbon black mixture is no more than about 80% by weight, no more than about 55% by weight, no more than about 40% by weight, or no more than about 25% by weight; forming the carbon black mixture to produce a shaped carbon black composite; and heating the shaped carbon black composite to carbonize the binder to a water insoluble state and to produce a shaped porous carbon product.
  • the binder comprises a saccharide selected from the group consisting of a monosaccharide, a disaccharide, an oligosaccharide, a derivative thereof, or any combination thereof and wherein the water content of the carbon black mixture is no more than about 80% by weight, no more than about 55% by weight, no more than
  • Another method of preparing the shaped porous carbon product by extrusion preferably comprises mixing carbon black particles with an aqueous solution comprising a water soluble organic binder compound selected from the group consisting of a monosaccharide, a disaccharide, an oligosaccharide, a polysaccharide, and combinations thereof to produce a carbon black mixture, wherein the carbon black mixture comprises at least about 40 wt.% of the carbon black and at least about 40 wt.% of the binder on a dry basis; forming the carbon black mixture under a pressure of at least 500 kPa (5 bar) to produce a shaped carbon black composite; drying the shaped carbon black material at a temperature from about room temperature (e.g., about 20°C) to about 150°C; and heating the dried shaped carbon black composite to a temperature between about 250°C and about 800°C in an oxidative, inert, or reductive atmosphere (e.g., an inert N2 atmosphere) to carbonize the bin
  • the water soluble organic binder compound is selected from the group consisting of a monosaccharide, an oligosaccharide, a polysaccharide, and combinations thereof.
  • the carbon black content of the shape porous carbon product can be at least about 35 wt.% or as described herein.
  • the shaped porous carbon product has a pore volume measured on the basis of pores having a diameter from 1.7 nm to 100 nm and at least about 35% of the pore volume is attributable to pores having a mean pore diameter of from about 10 nm to about 50 nm.
  • the carbon black mixture may optionally be heated during the forming step (e.g., extrusion, pelletizing, pilling, tableting, cold or hot isostatic pressing, calandering, injection molding, 3D printing, drip casting, or other methods) to facilitate the forming of the carbon black mixture into the desired shape.
  • a forming step e.g., extrusion, pelletizing, pilling, tableting, cold or hot isostatic pressing, calandering, injection molding, 3D printing, drip casting, or other methods
  • Additional shaped porous carbon products and methods of preparation of the present invention include any combinations of the features described herein and where features described above are independently substituted or added to the aforementioned embodiments.
  • the shaped porous carbon black products can also be wash-coated or dip- coated onto other materials to prepare structured composite materials.
  • the shaped porous carbon black products (at least micron-sized) can be domains on heterogeneous, segregated composite materials (e.g., carbon - ZrCk composites or carbon domains hosted by large-pore (mm-sized) ceramic foams) as well as layered or structured materials (e.g., carbon black wash-coats onto inert supports such as steatite, plastic or glass balls).
  • the shaped porous carbon black product of the invention may be further treated thermally or chemically to alter the physical and chemical characteristics of the shaped porous carbon black product.
  • chemical treatment such as an oxidation may a produce a more hydrophilic surface which may provide advantages for preparing a catalyst (improved wetting and dispersion).
  • Oxidation methods are known in the art, see for example U.S. Patents 7,922,805 and 6,471,763.
  • the shaped porous carbon black product has been surface treated using known methods for attaching a functional group to a carbon based substrate.
  • the functional group may be an ionizable group such that when the shaped porous carbon black product is subjected to ionizing conditions, it comprises an anionic or cationic moiety. This embodiment is useful when the shaped porous carbon black product is used as a separation media in chromatography columns and other separation devices.
  • Various aspects of the present invention are also directed to catalyst compositions comprising the shaped porous carbon product as a catalyst support and methods of preparing the catalyst compositions.
  • the shaped porous carbon products of the present invention provide effective dispersion and anchoring of catalytically active components or precursors thereof to the surface of the carbon product.
  • the catalyst compositions of the present invention are suitable for use in long term continuous flow operation phase reactions under demanding reaction conditions such as liquid phase reactions in which the shaped porous carbon product is exposed to reactive solvents such as acids and water at elevated temperatures.
  • the catalyst compositions comprising the shaped porous carbon products of the present invention demonstrate operational stability necessary for commodity applications.
  • the catalyst compositions of the present invention comprise the shaped porous carbon product as a catalyst support and a catalytically active component or precursor thereof at a surface of the support (external and/or internal surface).
  • the catalytically active component or precursor thereof comprises a metal at a surface of the shaped porous carbon product.
  • the metal comprises at least one metal selected from groups IV, V, VI, VII, VIII, IX, X, XI, XII, and XIII.
  • Some preferred metals include cobalt, nickel, copper, zinc, iron, vanadium, molybdenum, manganese, barium, ruthenium, rhodium, rhenium, palladium, silver, osmium, iridium, platinum, gold, and combinations thereof.
  • the metal comprises at least one d-block metal.
  • Some preferred d-block metals are selected from the group consisting of cobalt, nickel, copper, zinc, iron, ruthenium, rhodium, palladium, silver, osmium, iridium, platinum, gold and combinations thereof.
  • the metal(s) at a surface of the catalyst support may constitute f from about 0.1% to about 50%, from about 0.1% to about 25%, from about 0.1% to about 10%, from about 0.1% to about 5%, from about 0.25% to about 50%, from about 0.25% to about 25%, from about 0.25% to about 10%, from about 0.25% to about 5%, from about 1% to about 50%, from about 1% to about 25%, from about 1% to about 10%, from about 1% to about 5%, from about 5% to about 50%, from about 5% to about 25%, or from about 5% to about 10% of the total weight of the catalyst.
  • the metals may be present in various forms (e.g., elemental, metal oxide, metal hydroxides, metal ions, metalates, polyanions, oligomers or colloidal etc.). Typically, however, the metals are reduced to elemental form during preparation of the catalyst composition or in-situ in the reactor under reaction conditions.
  • the metal(s) may be deposited on a surface of the shaped porous carbon product according procedures known in the art including, but not limited to incipient wetness, ion-exchange, deposition-precipitation, coating and vacuum impregnation. When two or more metals are deposited on the same support, they may be deposited sequentially or simultaneously. Multiple impregnation steps are also possible (e.g., dual impregnation of the same metal under different conditions to increase overall metal loading or tune the metal distribution across the shell).
  • the metal(s) deposited on the shaped porous carbon product for the oxidation catalyst form a shell at least partially covering the surface of the carbon product.
  • metal deposited on the shaped porous carbon product coats external surfaces of the carbon product.
  • the metal penetrates surficial pores of the shaped porous carbon product to form a shell layer (“egg shell”) with a thickness of from about 10 pm to about 400 pm, or from about 50 pm to about 150 pm (e.g., about 100 pm).
  • the shell may be produced sub-surface to produce a 10 pm to about 400 pm sub-surface band containing the catalytically active metals (“egg yolk”). Also structured shells featuring different metal distributions across the shell for the various metals are possible.
  • the metal(s) may be deposited on the carbon black particles before forming the shaped porous carbon product.
  • the carbon black mixture may further comprise a metal, such as, for example, a d-block metal.
  • a metal such as, for example, a d-block metal.
  • Some preferred d-block metals are selected from the group consisting of cobalt, nickel, copper, zinc, bon, ruthenium, rhodium, palladium, silver, osmium, bidium, platinum, gold and combinations thereof.
  • the metal comprises at least one metal selected from groups IV, V, VI, VII, VIII, IX, X, XI, XII, and XIII.
  • Preferred metals include cobalt, nickel, copper, zinc, bon, vanadium, molybdenum, manganese, barium, ruthenium, rhodium, rhenium, palladium, silver, osmium, bidium, platinum, gold, and combinations thereof.
  • the metal(s) may constitute from about 0.1% to about 50%, from about 0.1% to about 25%, from about 0.1% to about 10%, from about 0.1% to about 5%, from about 0.25% to about 50%, from about 0.25% to about 25%, from about 0.25% to about 10%, from about 0.25% to about 5%, from about 1% to about 50%, from about 1% to about 25%, from about 1% to about 10%, from about 1% to about 5%, from about 5% to about 50%, from about 5% to about 25%, or from about 5% to about 10%.
  • the metal content can be from about 0.25% to about 10% of the total weight of the shaped porous carbon product.
  • the metal content can be from about 0.1% to about 50% of the total weight of the shaped porous carbon product.
  • the catalyst composition is optionally dried, for example, at a temperature of at least about 50 °C, more typically at least about 120°C for a period of time of at least about 1 hour, more typically 3 hours or more.
  • the drying may be conducted in a continuous or staged manner where independently controlled temperature zones (e.g., 60°C, 80°C, and 120°C) are utilized.
  • independently controlled temperature zones e.g., 60°C, 80°C, and 120°C
  • drying is initiated below the boiling point of the solvent, e.g., 60 °C and then increased.
  • the catalyst is dried under sub-atmospheric or atmospheric pressure conditions.
  • the catalyst is reduced after drying (e.g., by flowing 5% 3 ⁇ 4 in N2 at 350 °C for 3 hours). Still further, in these and other embodiments, the catalyst is calcined, for example, at a temperature of at least about 200°C for a period of time (e.g., at least about 3 hours).
  • the catalyst composition of the present invention is prepared by depositing the catalytically active component or precursor thereof subsequent to forming the shaped porous carbon product (i.e., depositing directly on a surface of the shaped porous carbon product).
  • the catalyst composition of the present invention can be prepared by contacting the shaped porous carbon product with a solubilized metal complex or combination of solubilized metal complexes.
  • the heterogeneous mixture of solid and liquids can then be stirred, mixed and/or shaken to enhance the uniformity of dispersion of the catalyst, which, in turn, enables the more uniform deposition of metal(s) on the surface of the support upon removal of the liquids.
  • the metal complex(es) on the shaped porous carbon products are heated and reduced under a reducing agent such as a hydrogen containing gas (e.g., forming gas 5% 3 ⁇ 4 and 95% N2).
  • a reducing agent such as a hydrogen containing gas (e.g., forming gas 5% 3 ⁇ 4 and 95% N2).
  • the temperature at which the heating is conducted generally ranges from about 150°C to about 600°C, from about 200°C to about 500°C, or from about 100°C to about 400°C. Heating is typically conducted for a period of time ranging from about 1 hour to about 5 hours or from about 2 hours to about 4 hours. Reduction may also be carried in the liquid phase.
  • catalyst compositions can be treated in a fixed bed with the liquid containing a reducing agent pumped through the static catalyst.
  • the catalyst composition of the present invention is prepared by depositing the catalytically active component or precursor thereof on carbon black prior to forming the shaped porous carbon product.
  • a slurry of carbon black with solubilized metal complex(es) is prepared. Carbon black may be initially dispersed in a liquid such as water. Thereafter, the solubilized metal complex(es) may be added to the slurry containing the carbon black. The heterogeneous mixture of solid and liquids can then be stirred, mixed and/or shaken to enhance the uniformity of dispersion of the catalyst, which, in turn, enables the more uniform deposition of metal(s) on the surface of the carbon black upon removal of the liquids.
  • the metal complex(es) on the carbon black are heated and reduced with a reducing agent as described above.
  • the metal- loaded carbon black particles can then be formed according to the method described for the shaped porous carbon product.
  • the slurry can also be wash-coated onto inert supports rather than shaped into bulk catalyst pellets.
  • the catalyst compositions comprising the shaped porous carbon product as a catalyst support can be deployed in various reactor formats, particularly those suited liquid phase medium such as batch slurry, continuous slurry-based stirred tank reactors, cascade of stirred tank reactors, bubble slurry reactor, fixed beds, ebulated beds and other known industrial reactor formats.
  • the present invention is further directed to methods of preparing a reactor vessel for a liquid phase catalytic reaction.
  • the present invention is further directed to methods of preparing a reactor vessel for a gaseous phase catalytic reaction.
  • the method comprises charging the reactor vessel with a catalyst composition comprising the shaped porous carbon product as described herein as a catalyst support.
  • the reactor vessel is a fixed bed reactor.
  • Various methods for preparing a catalyst composition in accordance with the present invention include mixing and heating water and a water soluble organic binder to form a binder solution, wherein the water and binder are heated to a temperature of at least about 50 °C, and wherein the binder comprises: (i) a saccharide selected from the group consisting of a monosaccharide, a disaccharide, an oligosaccharide, a derivative thereof, and any combination thereof and (ii) a polymeric carbohydrate, a derivative of a polymeric carbohydrate, or a non-carbohydrate synthetic polymer, or any combination thereof; mixing carbon black particles with the binder solution to produce a carbon black mixture; forming the carbon black mixture to produce a shaped carbon black composite; heating the shaped carbon black composite to carbonize the binder to a water insoluble state and to produce a shaped porous carbon product; and depositing a catalytically active component or precursor thereof on the shaped porous carbon product to produce the catalyst
  • Other methods include mixing water, carbon black, and a water soluble organic binder to form a carbon black mixture, wherein the binder comprises: (i) a saccharide selected from the group consisting of a monosaccharide, a disaccharide, an oligosaccharide, a derivative thereof, and any combination thereof and (ii) a polymeric carbohydrate, a derivative of a polymeric carbohydrate, or a non-carbohydrate synthetic polymer, or any combination thereof; forming the carbon black mixture to produce a shaped carbon black composite; heating the shaped carbon black composite to carbonize the binder to a water insoluble state and to produce a shaped porous carbon product; and depositing a catalytically active component or precursor thereof on the shaped porous carbon product to produce the catalyst composition.
  • the binder comprises: (i) a saccharide selected from the group consisting of a monosaccharide, a disaccharide, an oligosaccharide, a derivative thereof, and any combination
  • Further methods for preparing a catalyst composition in accordance with the present invention include mixing water, carbon black, and a binder to form a carbon black mixture, wherein the binder comprises a saccharide selected from the group consisting of a monosaccharide, a disaccharide, an oligosaccharide, a derivative thereof, or any combination thereof and wherein the weight ratio of the binder to carbon black in the carbon black mixture is at least about 1:4, at least about 1:3, at least about 1:2, at least about 1:1, or at least 1.5:1; forming the carbon black mixture to produce a shaped carbon black composite; heating the shaped carbon black composite to carbonize the binder to a water insoluble state and to produce a shaped porous carbon product; and depositing a catalytically active component or precursor thereof on the shaped porous carbon product to produce the catalyst composition.
  • the binder comprises a saccharide selected from the group consisting of a monosaccharide, a disaccharide, an oligosaccharide,
  • Other methods include mixing water, carbon black, and a binder to form a carbon black mixture, wherein the binder comprises a saccharide selected from the group consisting of a monosaccharide, a disaccharide, an oligosaccharide, a derivative thereof, or any combination thereof and wherein the water content of the carbon black mixture is no more than about 80% by weight, no more than about 55% by weight, no more than about 40% by weight, or no more than about 25% by weight; forming the carbon black mixture to produce a shaped carbon black composite; heating the shaped carbon black composite to carbonize the binder to a water insoluble state and to produce a shaped porous carbon product; and depositing a catalytically active component or precursor thereof on the shaped porous carbon product to produce the catalyst composition.
  • the binder comprises a saccharide selected from the group consisting of a monosaccharide, a disaccharide, an oligosaccharide, a derivative thereof, or any combination thereof and wherein the water content of
  • Still further methods include depositing a catalytically active component or precursor thereof on a shaped porous carbon product to produce the catalyst composition, wherein the shaped porous carbon product comprises: (a) carbon black and (b) a carbonized binder comprising a carbonization product of a water soluble organic binder and wherein the shaped porous carbon product has a BET specific surface area from about 20 m 2 /g to about 500 m 2 /g, a mean pore diameter greater than about 5 nm, a specific pore volume greater than about 0.1 cm 3 /g, a radial piece crush strength greater than about 4.4 N/mm (1 lb/mm), a carbon black content of at least about 35 wt.%, and a carbonized binder content from about 20 wt.% to about 50 wt.%.
  • the catalyst compositions comprising the shaped porous carbon product of the present invention are useful for various catalytic conversions including oxidations, reductions, dehydrations, hydrogenations and other known transformations using appropriate active metals formulations and which can be conducted in gaseous or liquid medium. Accordingly, in further aspects, the present invention is directed to processes for the catalytic conversion of a reactant.
  • Processes of the present invention comprise contacting a liquid medium comprising the reactant with a catalyst composition comprising the shaped porous carbon product as a catalyst support.
  • the shaped porous carbon product comprises (a) carbon black and (b) a carbonized binder comprising a carbonization product of a water soluble organic binder, wherein the shaped porous carbon product has a BET specific surface area from about 20 m 2 /g to about 500 m 2 /g or from about 25 m 2 /g to about 250 m 2 /g, a mean pore diameter greater than about 10 nm, a specific pore volume greater than about 0.1 cm 3 /g, a radial piece crush strength greater than about 4.4 N/mm (1 lb/mm), and a carbon black content of at least about 35 wt.%.
  • the shaped porous carbon product comprises a carbon agglomerate, wherein the shaped porous carbon product has a mean diameter of at least about 50 pm, a BET specific surface area from about 20 m 2 /g to about 500 m 2 /g or from about 25 m 2 /g to about 250 m 2 /g, a mean pore diameter greater than about 10 nm, a specific pore volume greater than about 0.1 cm 3 /g, and a radial piece crush strength greater than about 4.4 N/mm (1 lb/mm).
  • the catalyst composition has superior mechanical strength (e.g., mechanical piece crush strength and/or radial piece crush strength) and is stable to the continuous flow of the liquid medium and reaction conditions for at least about 500 hours or about 1,000 hours without substantial loss in catalytic productivity, selectivity, and/or yield.
  • mechanical strength e.g., mechanical piece crush strength and/or radial piece crush strength
  • the catalyst compositions comprising the shaped porous carbon product of the present invention are highly productive and selective catalysts for a certain of chemical transformations such as the conversion of highly functionalized and/or non-volatile molecules including, but not limited to biorenewably-derived molecules and intermediates for commodity applications.
  • One series of chemical transformations that the catalyst compositions of the present invention are suited for is the selective oxidation of a hydroxyl group to a carboxyl group in a liquid or gaseous reaction medium.
  • one series of chemical transformations that the catalyst compositions of the present invention are especially suited for is the selective oxidation an aldose to an aldaric acid.
  • catalyst compositions of the present invention as described herein can be utilized as oxidation catalysts.
  • Aldoses include, for example, pentoses and hexoses (i.e., C-5 and C-6 monosaccharides).
  • Pentoses include ribose, arabinose, xylose, and lyxose, and hexoses include glucose, allose, altrose, mannose, gulose, idose, galactose, and talose. Accordingly, in various embodiments, the present invention is also directed to a process for the selective oxidation of an aldose to an aldaric acid comprising reacting the aldose with oxygen in the presence of a catalyst composition as described herein to form the aldaric acid.
  • the catalyst composition comprises at least platinum as a catalytically active component.
  • the catalyst compositions of the present invention have been found to be especially selective for the oxidation of the glucose to glucaric acid. Accordingly, the present invention is directed to a process for the selective oxidation of glucose to glucaric acid comprising reacting the aldose with oxygen in the presence of a catalyst composition as described herein to form glucaric acid.
  • U.S. Patent No. 8,669,397 discloses various catalytic processes for the oxidation of glucose to glucaric acid.
  • glucose may be converted to glucaric acid in high yield by reacting glucose with oxygen (e.g., air, oxygen-enriched air, oxygen alone, or oxygen with other constituents substantially inert to the reaction) in the presence of an oxidation catalyst according to the following reaction: glucaric acid
  • oxygen e.g., air, oxygen-enriched air, oxygen alone, or oxygen with other constituents substantially inert to the reaction
  • the oxidation can be conducted in the absence of added base (e.g., KOH) or where the initial pH of the reaction medium and/or the pH of reaction medium at any point in the reaction is no greater than about 7, no greater than 7.0, no greater than about 6.5, or no greater than about 6.
  • the initial pH of the reaction mixture is the pH of the reaction mixture prior to contact with oxygen in the presence of an oxidation catalyst.
  • catalytic selectivity can be maintained to attain glucaric acid yield in excess of about 30%, about 40%, about 50%, about 60% and, in some instances, attain yields in excess of 65% or higher.
  • the absence of added base advantageously facilitates separation and isolation of the glucaric acid, thereby providing a process that is more amenable to industrial application, and improves overall process economics by eliminating a reaction constituent.
  • the “absence of added base” as used herein means that base, if present (for example, as a constituent of a feedstock), is present in a concentration which has essentially no effect on the efficacy of the reaction; i.e., the oxidation reaction is being conducted essentially free of added base.
  • the oxidation reaction can also be conducted in the presence of a weak carboxylic acid, such as acetic acid, in which glucose is soluble.
  • weak carboxylic acid means any unsubstituted or substituted carboxylic acid having a pKa of at least about 3.5, more preferably at least about 4.5 and, more particularly, is selected from among unsubstituted acids such as acetic acid, propionic acid or butyric acid, or mixtures thereof.
  • the oxidation reaction may be conducted under increased oxygen partial pressures and/or higher oxidation reaction mixture temperatures, which tends to increase the yield of glucaric acid when the reaction is conducted in the absence of added base or at a pH below about 7.
  • the partial pressure of oxygen is at least about 15 pounds per square inch absolute (psia) (104 kPa), at least about 25 psia (172 kPa), at least about 40 psia (276 kPa), or at least about 60 psia (414 kPa).
  • the partial pressure of oxygen is up to about 1,000 psia (6895 kPa), more typically in the range of from about 15 psia (104 kPa) to about 500 psia (3447 kPa), from about 75 psia (517 kPa) to about 500 psia (3447 kPa), from about 100 psia (689 kPa) to about 500 psia (3447 kPa), from about 150 psia (1034 kPa) to about 500 psia (3447 kPa).
  • the temperature of the oxidation reaction mixture is at least about 40°C, at least about 60°C, at least about 70°C, at least about 80°C, at least about 90°C, at least about 100°C, or higher.
  • the temperature of the oxidation reaction mixture is from about 40°C to about 200°C, from about 60°C to about 200°C, from about 70°C to about 200°C, from about 80°C to about 200°C, from about 80°C to about 180°C, from about 80°C to about 150°C, from about 90°C to about 180°C, or from about 90°C to about 150°C.
  • the catalyst compositions comprising the shaped porous carbon product as a catalyst support permit glucose oxidation at elevated temperatures (e.g., from about 100°C to about 160°C or from about 125 °C to about 150°C) without heat degradation of the catalyst.
  • reactor formats such as a fixed bed reactor which can provide a relatively high liquid throughput in combination with the catalyst compositions comprising the shaped porous carbon product comprising carbon black have been found to permit oxidation at temperatures in excess of 140°C (e.g., 140° to about 150°C).
  • Oxidation of glucose to glucaric acid can also be conducted in the absence of nitrogen as an active reaction constituent. Some processes employ nitrogen compounds such as nitric acid as an oxidant.
  • nitrogen in a form in which it is an active reaction constituent results in the need for NO x abatement technology and acid regeneration technology, both of which add significant cost to the production of glucaric acid from these known processes, as well as providing a corrosive environment which may deleteriously affect the equipment used to carry out the process.
  • an oxidation reaction employing air or oxygen-enriched air is a reaction conducted essentially free of nitrogen in a form in which it would be an active reaction constituent.
  • glucose is oxidized to glucaric acid in the presence of a catalyst composition comprising the shaped porous carbon product as a catalyst support described herein and a catalytically active component at a surface of the support.
  • the catalytically active component comprises platinum.
  • the catalytically active component comprises platinum and gold.
  • oxidation catalyst compositions comprising the shaped porous carbon product of the present invention provide unexpectedly greater selectivity and yield for producing glucaric acid from glucose when compared to similar catalysts comprising similar support materials such as activated carbon.
  • applicants have unexpectedly found that enhanced selectivity and yield for glucaric acid can be achieved by use of an oxidation catalyst composition comprising the shaped porous carbon product as a catalyst support and a catalytically active component comprising platinum and gold at a surface of the shaped porous carbon product (i.e., at a surface of the catalyst support).
  • the oxidation catalyst can include any of the shaped porous carbon products as described herein.
  • the shaped porous carbon product comprises (a) carbon black and (b) a carbonized binder comprising a carbonization product of a water soluble organic binder, wherein the shaped porous carbon product has a BET specific surface area from about 20 m 2 /g to about 500 m 2 /g or from about 25 m 2 /g to about 250 m 2 /g, a mean pore diameter greater than about 10 nm, a specific pore volume greater than about 0.1 cm 3 /g, a radial piece crush strength greater than about 4.4 N/mm (1 lb/mm), and a carbon black content of at least about 35 wt.%.
  • the shaped porous carbon product comprises a carbon agglomerate, wherein the shaped porous carbon product has a mean diameter of at least about 50 pm, a BET specific surface area from about 20 m 2 /g to about 500 m 2 /g or from about 25 m 2 /g to about 250 m 2 /g, a mean pore diameter greater than about 10 nm, a specific pore volume greater than about 0.1 cm 3 /g, and a radial piece crush strength greater than about 4.4 N/mm (1 lb/mm).
  • Another shaped porous carbon product in accordance with the present invention also has a pore volume measured on the basis of pores having a diameter from 1.7 nm to 100 nm and at least about 35% of the pore volume is attributable to pores having a mean pore diameter of from about 10 nm to about 50 nm.
  • the enhanced glucaric acid yield is typically at least about 30%, at least about 35%, at least about 40%, at least about, 45%, or at least about 50% (e.g., from about 35% to about 65%, from about 40% to about 65%, or from about 45% to about 65%). Further, the enhanced glucaric acid selectivity is typically at least about 70%, at least about 75%, or at least about 80%.
  • the catalytically active components or precursors thereof comprising platinum and gold are in the form described in U.S. Patent Application Publication 2011/0306790, the entire contents of which are incorporated herein by reference.
  • This publication describes various oxidation catalysts comprising a catalytically active component comprising platinum and gold, which are usul for the selective oxidation of compositions comprised of a primary alcohol group and at least one secondary alcohol group (e.g., glucose).
  • an oxidation catalyst composition according the present invention comprises the shaped porous carbon product as described herein as a catalyst support comprising particles of gold in the form of a gold-containing alloy and particles consisting essentially of platinum (0) as the catalytically active components on a surface of the catalyst support.
  • the total metal loading of the catalyst composition is about 10 wt.% or less, from about 1 wt.% to about 8 wt.%, from about 1 wt.% to about 5 wt.%, or from about 2 wt.% to about 4 wt.%.
  • the catalytically active component comprises platinum
  • the mass ratio of glucose to platinum is from about 10:1 to about 1000:1, from about 10:1 to about 500:1, from about 10:1 to about 200:1, or from about 10:1 to about 100:1.
  • the oxidation catalyst of the present invention may be prepared according to the following method.
  • the gold component of the catalyst is typically added to the shaped porous carbon product as a solubilized constituent to enable the formation of a uniform suspension.
  • a base is then added to the suspension in order to create an insoluble gold complex which can be more uniformly deposited onto the support.
  • the solubilized gold constituent is provided to the slurry as gold salt, such as HAuCM.
  • a base is added to the slurry to form an insoluble gold complex which then deposits on the surface of the shaped porous carbon product.
  • bases such as KOH, NaOH are typically employed. It may be desirable, though not required, to collect the shaped porous carbon product on which has been deposited the insoluble gold complex prior to adding the platinum-containing constituent, which collection can readily be accomplished by any of a variety of means known in the art such as, for example, centrifugation. The collected solids may optionally be washed and then may be heated to dry. Heating may also be employed so as to reduce the gold complex on the support to gold (0). Heating may be conducted at temperatures ranging from about 60 °C (to dry) up to about 500°C (at which temperature the gold can be effectively reduced).
  • the heating step may be conducted in the presence of a reducing or oxidizing atmosphere in order to promote the reduction of the complex to deposit the gold onto the support as gold (0).
  • Heating times vary depending upon, for example, the objective of the heating step and the decomposition rate of the base added to form the insoluble complex, and the heating times can range from a few minutes to a few days. More typically, the heating time for the purpose of drying ranges from about 2 to about 24 hours and for reducing the gold complex is on the order of about 1 to about 4 hours.
  • the concentration of the shaped porous carbon product in the slurry can be in the range of about 1 to about 100 g of solid/liter of slurry, and in other embodiments the concentration can be in the range of about 5 to about 25 g of solid/liter of slurry.
  • Platinum can be added to the shaped porous carbon product or slurry thereof after deposition of gold onto the shaped porous carbon product or after heat treatment to reduce the gold complex on the support to gold (0).
  • the platinum may be added to the shaped porous carbon product or slurry thereof prior to the addition of the solubilized gold compound provided the platinum present on the support is in a form that will not be re dissolved upon the addition of base used to promote the deposition of gold onto the support.
  • the platinum is typically added as a solution of a soluble precursor or as a colloid.
  • More preferred compounds include platinum(II) nitrate, platinum(IV) nitrate, platinum(II) acetylacetonate (acac), tetraamine platinum(II) hydroxide, K 2 PtCl 4 , and K 2 Pt(OH) 6 .
  • the support slurry and platinum-containing compound is dried. Drying may be conducted at room temperature or at a temperature up to about 120°C. More preferably, drying is conducted at a temperature in the range of about 40°C to about 80°C and more preferably still at about 60°C. The drying step may be conducted for a period of time ranging from about a few minutes to a few hours. Typically, the drying time is in the range of about 6 hours to about 24 hours. The drying can also be done with continuous or staged temperature increase from about 60°C to 120°C on a band calciner or belt dryer (which is preferred for commercial applications).
  • the support having the platinum compound deposited thereon After drying the support having the platinum compound deposited thereon, it is subjected to at least one thermal treatment in order to reduce platinum deposited as platinum (II) or platinum (IV) to platinum (0).
  • the thermal treatment(s) can be conducted in air or in any reducing or oxidizing atmosphere. In various embodiments the thermal treatment(s) is (are) conducted under a forming gas atmosphere.
  • a liquid reducing agent may be employed to reduce the platinum; for example, hydrazine or formaldehyde or formic acid or salts thereof (e.g., sodium formate) or NaFhPCk maybe employed to effect the requisite reduction of the platinum.
  • the atmosphere under which the thermal treatment is conducted is dependent upon the platinum compound employed, with the objective being substantially converting the platinum on the support to platinum (0).
  • the temperatures at which the thermal treatment(s) is (are) conducted generally range from about 150°C to about 600°C. More typically, the temperatures of the thermal treatment(s) range from about 200°C to about 500°C and, preferably, the range is from about 200°C to about 400°C.
  • the thermal treatment is typically conducted for a period of time ranging from about 1 hour to about 8 hours or from about 1 hour to about 3 hours.
  • the metal(s) deposited on the shaped porous carbon product for the oxidation catalyst form a shell at least partially covering the surface of the carbon product.
  • metal deposited on the shaped porous carbon product coats external surfaces of the carbon product.
  • the metal penetrates surficial pores of the shaped porous carbon product to form a shell layer (“egg shell”) with a thickness of from about 10 pm to about 400 pm, or from about 50 pm to about 150 pm (e.g., about 100 pm).
  • the shell may be produced sub-surface to produce a 10 pm to about 400 pm sub-surface band containing the catalytically active metals (“egg yolk”).
  • catalyst compositions of the present invention are suited for is the hydrodeoxygenation of carbon-hydroxyl groups to carbon-hydrogen groups in a liquid or gaseous reaction medium.
  • one series of chemical transformation that the catalyst compositions of the present invention are especially suited for is the selective halide-promoted hydrodeoxygenation of an aldaric acid or salt, ester, or lactone thereof to a dicarboxylic acid. Accordingly, catalyst compositions of the present invention as described herein can be utilized as hydrodeoxygenation catalysts.
  • the present invention is also directed to a process for the selective halide promoted hydrodeoxygenation of an aldaric acid comprising reacting the aldaric acid or salt, ester, or lactone thereof with hydrogen in the presence of a halogen-containing compound and a catalyst composition as described herein to form a dicarboxylic acid.
  • the catalyst composition comprises at least one noble metal as a catalytically active component.
  • the catalyst compositions of the present invention have been found to be especially selective for halide-promoted hydrodeoxygenation of glucaric acid or salt, ester, or lactone thereof to adipic acid.
  • U.S. Patent No. 8,669,397 referenced above and incorporated herein by reference, describes the chemocatalytic processes for the hydrodeoxygenation of glucaric acid to adipic acid.
  • Adipic acid or salts and esters thereof may be prepared by reacting, in the presence of a hydrodeoxygenation catalyst and a halogen source, glucaric acid or salt, ester, or lactone thereof, and hydrogen, according to the following reaction:
  • glucaric acid or salt, ester, or lactone thereof is converted to an adipic acid product by catalytic hydrodeoxygenation in which carbon- hydroxyl groups are converted to carbon-hydrogen groups.
  • the catalytic hydrodeoxygenation is hydroxyl- selective wherein the reaction is completed without substantial conversion of the one or more other non-hydroxyl functional group of the substrate.
  • the halogen source may be in a form selected from the group consisting of ionic, molecular, and mixtures thereof.
  • Halogen sources include hydrohalic acids (e.g., HC1, HBr, HI and mixtures thereof; preferably HBr and/or HI), halide salts, (substituted or unsubstituted) alkyl halides, or molecular (diatomic) halogens (e.g., chlorine, bromine, iodine or mixtures thereof; preferably bromine and/or iodine).
  • the halogen source is in diatomic form, hydrohalic acid, or halide salt and, more preferably, diatomic form or hydrohalic acid.
  • the halogen source is a hydrohalic acid, in particular hydrogen bromide.
  • the molar ratio of halogen to the glucaric acid or salt, ester, or lactone thereof is about equal to or less than about 1.
  • the mole ratio of halogen to the glucaric acid or salt, ester, or lactone thereof is typically from about 1 : 1 to about 0.1:1, more typically from about 0.7:1 to about 0.3:1, and still more typically about
  • the reaction allows for recovery of the halogen source and catalytic quantities (where molar ratio of halogen to the glucaric acid or salt, ester, or lactone thereof is less than about 1) of halogen can be used, recovered and recycled for continued use as a halogen source.
  • the temperature of the hydrodeoxygenation reaction mixture is at least about 20°C, typically at least about 80°C, and more typically at least about 100°C. In various embodiments, the temperature of the hydrodeoxygenation reaction is conducted in the range of from about 20°C to about 250°C, from about 80°C to about 200°C, from about 120°C to about 180°C, or from about 140°C to 180°C.
  • the partial pressure of hydrogen is at least about 25 psia (172 kPa), more typically at least about 200 psia (1379 kPa) or at least about 400 psia (2758 kPa).
  • the partial pressure of hydrogen is from about 25 psia (172 kPa) to about 2500 psia (17237 kPa), from about 200 psia (1379 kPa) to about 2000 psia (13790 kPa), or from about 400 psia (2758 kPa) to about 1500 psia (10343 kPa).
  • the hydrodeoxygenation reaction is may be conducted in the presence of a solvent.
  • Solvents suitable for the selective hydrodeoxygenation reaction include water and carboxylic acids, amides, esters, lactones, sulfoxides, sulfones and mixtures thereof.
  • Preferred solvents include water, mixtures of water and weak carboxylic acid, and weak carboxylic acid.
  • a preferred weak carboxylic acid is acetic acid.
  • hydrodeoxygenation catalyst compositions comprising the shaped porous carbon product of the present invention provide enhanced selectivity and yield for producing adipic acid.
  • applicants have unexpectedly found that enhanced selectivity and yield for adipic acid can be achieved by use of a catalyst composition comprising the shaped porous carbon product of the present invention as a catalyst support and a catalytically active component at a surface of the shaped porous carbon product (i.e., at a surface of the catalyst support).
  • the catalyst can include any of the shaped porous carbon products as described herein.
  • the shaped porous carbon product comprises (a) carbon black and (b) a carbonized binder comprising a carbonization product of a water soluble organic binder, wherein the shaped porous carbon product has a BET specific surface area from about 20 m 2 /g to about 500 m 2 /g or from about 25 m 2 /g to about 250 m 2 /g, a mean pore diameter greater than about 5 nm, a specific pore volume greater than about 0.1 cm 3 /g, a radial piece crush strength greater than about 4.4 N/mm (1 lb/mm), and a carbon black content of at least about 35 wt.%.
  • the shaped porous carbon product comprises a carbon agglomerate, wherein the shaped porous carbon product has a mean diameter of at least about 50 mhi, a BET specific surface area from about 20 m 2 /g to about 500 m 2 /g or from about 25 m 2 /g to about 250 m 2 /g, a mean pore diameter greater than about 5 nm, a specific pore volume greater than about 0.1 cm 3 /g, and a radial piece crush strength greater than about 4.4 N/mm (1 lb/mm).
  • Another shaped porous carbon product in accordance with the present invention also has a pore volume measured on the basis of pores having a diameter from 1.7 nm to 100 nm and at least about 35% of the pore volume is attributable to pores having a mean pore diameter of from about 10 nm to about 50 nm.
  • the catalytically active component or precursor thereof may include noble metals selected from the group consisting of ruthenium, rhodium, palladium, platinum, and combinations thereof.
  • the hydrodeoxygenation catalyst comprises two or more metals.
  • the first metal is selected from the group consisting of cobalt, nickel, ruthenium, rhodium, palladium, osmium, iridium, and platinum (more particularly, ruthenium, rhodium, palladium, and platinum) and the second metal is selected from the group consisting of titanium, vanadium, chromium, manganese, iron, cobalt, nickel, copper, molybdenum, ruthenium, rhodium, palladium, silver, tungsten, iridium, platinum, and gold (more particularly, molybdenum, ruthenium, rhodium, palladium, iridium, platinum, and gold).
  • the first metal is selected from the group of platinum, rhodium and palladium
  • the second metal is selected from the group consisting of ruthenium, rhodium, palladium, platinum, and gold.
  • the first metal is platinum and the second metal is rhodium.
  • the platinum to rhodium molar ratio of the catalyst composition of the present invention is in the range of from about 3:1 to about 1:2 or from about 3:1 to about 1:1.
  • the metal(s) deposited on the shaped porous carbon product for the hydrodeoxygenation catalyst form a shell at least partially covering the surface of the carbon product.
  • metal deposited on the shaped porous carbon product coats external surfaces of the carbon product.
  • the metal penetrates surficial pores of the shaped porous carbon product to form a shell layer (“egg shell”) with a thickness of from about 10 pm to about 400 pm, or from about 50 pm to about 150 pm (e.g., about 100 pm).
  • the shell may be produced sub-surface to produce a 10 pm to about 400 pm sub-surface band containing the catalytically active metals (“egg yolk”). Hydrodeoxygenation of 1,2,6-Hexanetriol
  • Another chemical transformation that the catalyst compositions of the present invention is advantageous for is the selective hydrodeoxygenation of 1,2,6-hexanetriol to 1,6- hexanediol (HDO) and 1,2,5,6-hexanetetraol to 1,6-HDO).
  • one process of the present invention is directed to the selective hydrodeoxygenation of 1,2,6-hexanetriol comprising reacting 1,2,6-hexanetriol with hydrogen the presence of a catalyst composition as disclosed herein to form HDO.
  • the catalytically active component of the catalyst composition comprises platinum.
  • the catalytically active component of the catalyst composition comprises platinum and at least one metal (M2) selected from the group of molybdenum, lanthanum, samarium, yttrium, tungsten, and rhenium. In certain embodiments, the catalytically active component of the catalyst composition comprises platinum and tungsten.
  • the total weight of metal(s) is from about 0.1% to about 10%, or from 0.2% to 10%, or from about 0.2% to about 8%, or from about 0.2% to about 5%, of the total weight of the catalyst. In more preferred embodiments the total weight of metal of the catalyst is less than about 4%.
  • the molar ratio of platinum to (M2) may vary, for example, from about 20:1 to about 1:10. In various embodiments, the Ml :M2 molar ratio is in the range of from about 10:1 to about 1:5. In still more preferred embodiments, the ratio of M1:M2 is in the range of about 8:1 to about 1:2.
  • the conversion of 1,2,6-hexanetriol to HDO is conducted at a temperature in the range of about 60° C to about 200° C or about 120° C to about 180° C and a partial pressure of hydrogen in the range of about 200 psig to about 2000 psig or about 500 psig to about 2000 psig.
  • the catalyst compositions of the present invention are also useful for the selective amination of 1 ,6-hexanediol (HDO) to 1 ,6-hexamethylenediamine (HMD A).
  • HDO 1 ,6-hexanediol
  • HMD A 1 ,6-hexamethylenediamine
  • another process of the present invention is directed to the selective amination of 1 ,6-hexanediol to 1 ,6-hexamethylenediamine comprising reacting the HDO with an amine in the presence of a catalyst composition as disclosed herein.
  • the catalytically active component of the catalyst composition comprises ruthenium.
  • the catalytically active component of the catalyst composition comprises ruthenium and optionally a second metal such as rhenium or nickel.
  • a second metal such as rhenium or nickel.
  • One or more other d-block metals, one or more rare earth metals (e.g., lanthanides), and/or one or more main group metals (e.g., Al) may also be present in combination with ruthenium and with ruthenium and rhenium combinations.
  • the catalytically active phase consists essentially of ruthenium and rhenium.
  • the total weight of metal(s) is from about 0.1% to about 10%, from about 1% to about 6%, or from about 1 % to about 5 % of the total weight of the catalyst composition.
  • the molar ratio of ruthenium to rhenium is important.
  • a by-product of processes for converting HDO to HMDA is pentylamine.
  • Pentylamine is an off path by product of the conversion of HDO to HMDA that cannot be converted to HMDA or to an intermediate which can, on further reaction in the presence of the catalysts of the present invention, be converted to HMDA.
  • the presence of too much rhenium can have an adverse effect on the yield of HMDA per unit area time (commonly known as space time yield, or STY).
  • the molar ratio of rutheniur rhenium should be maintained in the range of from about 20:1 to about 4:1.
  • the ruthenium:rhenium molar ratio is in the range of from about 10:1 to about 4:1 or from about 8:1 to about 4:1.
  • the rutheniurmrhenium molar ratio of from about 8:1 to about 4:1 produces HMDA in at least 25% yield with an HMDA/pentylamine ratio of at least 20:1, at least 25:1, or at least 30:1.
  • HDO is converted to HMDA by reacting HDO with an amine, e.g., ammonia, in the presence of the catalysts of the present invention.
  • an amine e.g., ammonia
  • the amine may be added to the reaction in the form of a gas or liquid.
  • the molar ratio of ammonia to HDO is at least about 40:1, at least about 30:1, or at least about 20:1. In various embodiments, it is in the range of from about 40:1 to about 5:1, from about 30:1 to about 10:1.
  • the reaction of HDO with amine in the presence of the catalyst composition of the present invention is carried out at a temperature less than or equal to about 200°C.
  • the catalyst composition is contacted with HDO and amine at a temperature less than or equal to about 100°C. In some embodiments, the catalyst is contacted with HDO and amine at a temperature in the range of about 100°C to about 180°C or about 140°C to about 180°C.
  • the reaction is conducted at a pressure not exceeding about 1500 psig.
  • the reaction pressure is in the range of about 200 psig to about 1500 psig.
  • the disclosed pressure ranges include the pressure of NH3 gas and an inert gas, such as N2.
  • the pressure of NH3 gas is in the range of about 50-150 psig and an inert gas, such as N2 is in the range of about 700 psig to about 1450 psig.
  • the catalyst is contacted with HDO and ammonia at a temperature in the range of about 100°C to about 180°C and a pressure in the range of about 200 psig to about 1500 psig. In other embodiments, the catalyst is contacted with HDO and ammonia at a temperature in the range of about 140°C to about 180°C and a pressure in the range of about 400 psig to about 1200 psig.
  • the disclosed pressure ranges include the pressure of NH3 gas and an inert gas, such as N2.
  • the pressure of NH3 gas is in the range of about 50-150 psig and an inert gas, such as N2 is in the range of about 500 psig to about 1450 psig.
  • the process of the present invention may be carried out in the presence of hydrogen.
  • the hydrogen partial pressure is equal to or less than about 100 psig.
  • the conversion of HDO to HMDA can also be conducted in the presence of a solvent.
  • Solvents suitable for use in conjunction with the conversion of HDO to HMDA in the presence of the catalysts of the present invention may include, for example, water, alcohols, esters, ethers, ketones, or mixtures thereof.
  • the preferred solvent is water.
  • the chemocatalytic conversion of HDO to HMDA is likely to produce one or more by-products such as, for example, pentylamine and hexylamine.
  • by-products which are subsequently convertible to HMDA by further reaction in the presence of catalysts of the present invention are considered on-path by-products.
  • Other by-products such as, for example, pentylamine and hexylamine are considered off path by-products for the reasons above discussed.
  • At least 20%, at least 30%, at least 40%, at least 50%, at least 60%, or at least 70% of the product mixture resulting from a single pass reaction of HDO with amine (e.g., ammonia) in the presence of the catalysts of the present invention is HMDA.
  • the product mixture may be separated into one or more products by any suitable methods known in the art.
  • the product mixture can be separated by fractional distillation under sub atmospheric pressures.
  • HMDA can be separated from the product mixture at a temperature between about 180°C and about 220°C.
  • the HDO may be recovered from any remaining other products of the reaction mixture by one or more conventional methods known in the art including, for example, solvent extraction, crystallization or evaporative processes.
  • the on- path by-products can be recycled to the reactor employed to produce the product mixture or, for example, supplied to a second reactor in which the on path by-products are further reacted with ammonia in the presence of the catalysts of the present invention to produce additional HMDA.
  • Another chemical transformation that the catalyst supports and catalyst compositions of the present invention are advantageous for is the hydrogenolysis of glycerol to various diols, particularly propylene glycol (1,2-propanediol) and/or ethylene glycol (1,2- ethanediol).
  • glycerol processes for the hydrogenolysis of glycerol are described in U.S. Patent Nos. 6,479,713 and 7,928,148 as well as U.S. Patent Application Publication No. 2018/0201559, the contents of which are hereby incorporated herein by reference.
  • processes for the hydrogenolysis of glycerol comprise feeding a feed composition comprising glycerol to a reaction zone and reacting the glycerol with hydrogen in the presence of a catalyst composition as described herein in the reaction zone to form a reaction product comprising propylene glycol and/or ethylene glycol.
  • processes for the hydrogenolysis of glycerol comprise feeding a feed composition comprising glycerol to a reaction zone and reacting the glycerol with hydrogen in the presence of a catalyst composition in the reaction zone to form a reaction product comprising propylene glycol and/or ethylene glycol, wherein the catalyst composition comprises a catalytically active component comprising a metal selected from the group consisting of chromium, cobalt, nickel, copper, zinc, ruthenium, rhodium, palladium, silver, rhenium, osmium, iridium, platinum, gold, and any combination thereof and a catalyst support comprising a shaped porous carbon product comprising carbon black.
  • the shaped porous carbon product can include one or more features as described herein (e.g., specific surface area, mean pore diameter, specific pore volume, mesoporosity, pore size distribution, radial and mechanical piece crush strength, mean diameter, attrition index, abrasion loss, and so on).
  • the shaped porous carbon product can also include a carbonization product of a binder as described herein (e.g., carbonized saccharide, cellulosic compound, etc.)
  • a catalyst comprising a shaped porous carbon product as the catalyst support, which exhibits a high level of mesoporosity, has been found to be an especially effective catalyst for this reaction.
  • the shaped porous carbon product advantageously exhibits a high concentration of mesopores between about 10 nm to about 100 nm, between about 20 nm to about 100 nm, or between about 10 nm to about 50 nm.
  • At least about 35%, at least about 40%, at least about 45%, or at least about 50% of the pore volume of the shaped porous carbon product, as measured by the BJH method on the basis of pores having a diameter from 1.7 nm to 100 nm, is attributable to pores having a mean pore diameter of from about 20 nm to about 90 nm or from about 10 nm to about 50 nm.
  • the shaped porous carbon product has a relatively low concentration of macropores. For example, in some embodiments, about 10% or less, at least about 5% or less, or about 3% or less of the pore volume of the shaped porous carbon product as measured by mercury porosimetry is attributable to pores having a mean pore diameter of about 100 nm or greater.
  • from about 0.1% to about 10%, from about 0.1% to about 5%, from about 0.1% to about 3%, from about 1% to about 10%, from about 1% to about 5%, or from about 1% to about 3% of the pore volume of the shaped porous carbon product as measured by mercury porosimetry is attributable to pores having a mean pore diameter of about 100 nm or greater. Further details regarding mercury porosimetry analysis are provided in the Examples.
  • Processes of the present invention for the hydrogenolysis of glycerol have been found to advantageously provide for high yields of propylene glycol.
  • various processes provide for a yield of propylene glycol that is at least about 50%, at least about 60%, at least about 65%, at least about 70%, at least about 75%, or at least about 80%.
  • the partial pressure of hydrogen in the reaction zone is at least about 2.1 MPa (300 psi), at least about 6.9 MPa (1000 psi), at least about 12.4 MPa (1800 psi), or at least about 13.8 MPa (2000 psi). In some embodiments, the partial pressure of hydrogen in reaction zone is from about 2.1 MPa (300 psi) to about 13.8 MPa (2000 psi), from about 6.9 MPa (1000 psi) to about 13.8 MPa (2000 psi), or from about 12.4 MPa (1800 psi) to about 13.8 MPa (2000 psi). In some instances, it has been found that increasing the flow of hydrogen relative to the flow of glycerol in the reaction zone increases the yield of propylene glycol.
  • the catalyst composition typically comprises at least one catalytically active component comprising a metal selected from the group consisting of chromium, cobalt, nickel, copper, zinc, ruthenium, rhodium, palladium, silver, rhenium, osmium, iridium, platinum, gold, and any combination thereof.
  • the catalytically active component comprises rhenium.
  • the catalytically active component comprises nickel.
  • the catalytically active component comprises copper.
  • the catalytically active component comprises a combination of metals.
  • the combination of metals can be selected from the group consisting of nickel and rhenium, copper and rhenium, and cobalt and rhenium.
  • the catalyst composition further comprises manganese, molybdenum, and/or zinc.
  • the catalyst composition can have a loading of the catalytically active component as described herein.
  • the catalyst composition has a loading of the catalytically active component of about 0.1 wt.% or greater, about 1 wt.% or greater, about 2 wt.% or greater, about 3 wt.% or greater, about 4 wt.% or greater, or about 5 wt.% or greater.
  • the catalyst composition has a loading of the catalytically active component of from about 0.1 wt.% to about 10 wt.%, from about 0.1 wt.% to about 7.5 wt.%, from about 0.1 wt.% to about 5 wt.%, about 0.5 wt.% to about 10 wt.%, from about 0.5 wt.% to about 7.5 wt.%, from about 0.5 wt.% to about 5 wt.%, from about 1 wt.% to about 10 wt.%, from about 1 wt.% to about 7.5 wt.%, or from about 1 wt.% to about 5 wt.%.
  • the catalyst composition for glycerol hydrogenolysis can have a catalyst structure as described herein.
  • the catalytically active component can form a shell layer at least partially covering the surface of the shaped porous carbon product.
  • the catalytically active component is primarily present on surficial pores of the shaped porous carbon product to form a shell layer with a thickness of from about 10 pm to about 400 pm, or from about 50 pm to about 150 pm.
  • the catalyst composition comprises an inner region (e.g., core) and outer region (e.g., shell) and the outer region has a greater concentration of the catalytically active component than the inner region. For example, see FIGS. 14 and 16.
  • the outer region concentration of the catalytically active component is at least 2, 5, 10, or 100 times greater than the inner region concentration of the catalytically active component.
  • the catalyst composition has an average diameter and the outer region constitutes at least about 5%, at least about 10%, at least about 20%, from about 5% to about 50%, or from about 10% to about 40% of the average diameter.
  • the inner region constitutes at least about 20%, at least about 30%, at least about 40%, from about 20% to about 80%, or from about 20% to about 70% of the average diameter.
  • the hydrogenolysis processes described herein can also be conducted in the presence of a co-catalyst.
  • a co-catalyst is a base.
  • the reaction zone can further comprise a co-catalyst comprising a base.
  • the base comprises sodium hydroxide.
  • the base e.g., sodium hydroxide
  • the base can be co-fed to the reaction zone with the feed composition comprising glycerol, or can be supplied at the inlet as well as one or more additional points along the length of a continuous flow, tubular reactor or at the start and at one or more later times in a batchwise process as described in US 9,938,215.
  • the hydrogenolysis processes described herein can be conducted under neutral or basic conditions (e.g., slightly basic to basic).
  • the reaction can be conducted at a pH of from about 7 to about 11, from about 7.5 to about 10, from about 8 to about 14, or from about 10 to about 13.
  • the hydrogenolysis processes described herein can be conducted at a temperature of from about 150°C to about 300°C, from about 175°C to about 250°C, from about 190°C to about 250°C, or from about 190°C to about 225 °C.
  • the feed composition can comprise an aqueous glycerol solution.
  • the feed composition has a glycerol concentration of about 10 wt% or more, about 20 wt% or greater, about 30 wt% or greater, about 40 wt% or greater, from about 10 wt.% to about 50 wt.%, or from about 20 wt.% to about 40 wt.%.
  • the feed composition further comprises at least one other polyol selected from the group consisting of five- and six-carbon sugars and sugar alcohols.
  • Radial piece crush strength measurements were conducted according to ASTM D6175 - 03(2013) Standard Test Method for Radial Crush Strength of Extruded Catalyst and Catalyst Carrier Particles using a press apparatus equipped with a Dillon GS100 Digital Force Gauge.
  • Mean radial piece crush strength is the average value of independent measurements of at least 10 different extrudate pellets.
  • Single piece crush strength were conducted according to ASTM D4179 - 03(2013) Standard Test Method for Single Pellet Crush Strength of Formed Catalysts and Catalyst Carriers using a press apparatus equipped with a Dillon GS100 Digital Force Gauge.
  • Single piece crush strength is the average value of independent measurements of at least 10 different extrudate pellets.
  • the carbon black powders were evaluated as catalyst support material in an oxidation reaction for converting glucose to glucaric acid as described below.
  • glucaric acid The solution was diluted with deionized water and analyzed by ion chromatography to determine the yield of glucaric acid. Selectivity is defined as 100% x (glucaric acid) / (sum of glucaric acid and all off- pathway species).
  • Off-pathway species that cannot be converted to glucaric acid include 2- ketogluconic acid, 3 -keto gluconic acid, 4-ketogluconic acid, 5-ketogluconic acid, trihydroxyglutaric acid, tartaric acid, tartronic acid and oxalic acid.
  • On-pathway species include glucose, gluconic acid, guluronic acid and glucuronic acid. On-pathway species are not used in the selectivity calculation because these intermediates can be partially converted to glucaric acid and are not considered off-pathway. Results are presented in Table 3.
  • carbon black extrudates were prepared as described in Example 1.
  • Other carbon black powders included, but were not limited to, Orion carbon HI-BLACK 40B2, Orion HI- BLACK 50LB, Orion Hi-Black 50L, Orion HP-160, Orion Carbon HI-BLACK N330, Timcal Ensaco 150 G, Timcal Ensaco 250 G, Timcal Ensaco 260G, Timcal Ensaco 250P, Cabot Vulcan XC72R, Cabot Monarch 120, Cabot Monarch 280, Cabot Monarch 570, Cabot Monarch 700, Asbury 5365R, Asbury 5353R, Asbury 5345R, Asbury 5352, Asbury 5374, Asbury 5348R, Asbury 5358R, Sid Richardson SC159, Sid Richardson SR155.
  • carbohydrate binders included, but were not limited to, Cargill Clearbrew 60/44 IX (80% Carbohydrate), Casco Lab Fructose 90 (70% Carbohydrate) and Molasses (80% Carbohydrate). Formulations with these variations yielded illustrative examples of the shaped carbon product of the present invention. The properties of some of these embodiments are described in more detail below.
  • Extrudate pellets (Nos. 1-8 below), having an approximately 1.5 mm diameter, were prepared according to the method described in Example 1 except that the final pyrolysis times and temperatures were varied as listed in Table 5 in the extrudate description column. After the pyrolysis step the extrudates were cut to the sizes ranging from 2-6 mm in length. The percentage of carbonized binder (after pyrolysis) present in the shaped carbon product was determined by mass balance [i.e., [(Weight shaped carbon Product - Weight carbon Black (in formulation) / Weight shaped Carbon Product) x 100]. Total binder content after pyrolysis (i.e., total carbonized binder) varied from 15-50 wt.%.
  • Additional extrudate pellets (Nos. 9-11 below) were prepared accordingly to the following procedure. Approximately 24.0 g of carbon black powder (Timcal Ensaco 250G, 65 m 2 /g) was added in multiple portions to an aqueous solution (100.0 g) containing 25.0 wt.% Cerelose Dextrose from Ingredion. The mixture was stirred well using a spatula to produce a paste. This paste was loaded into a syringe and the material was extrudated into spaghetti- like strings with a 1.5 mm diameter. After drying in a 100°C oven for 3 hours under a dry air purge, these strings were cut into smaller pieces (2-6mm lengths).
  • Table 5 presents the crush strength data for the extrudates prepared.
  • the Cabot Vulcan XC72 carbon black extrudates prepared in Example 1 were further cut into small pieces of about 0.5 cm long for testing.
  • An aqueous solution (13 ml) containing 0.17 g Au in the form of Me 4 NAu0 2 and 0.26 g Pt in the form of PtCXNOd was mixed with 21.5 g of these extrudates.
  • the mixture was agitated to impregnate the carbon black support and was dried in a 60°C oven overnight under a dry air purge.
  • the sample was then reduced at 350°C under forming gas (5% 3 ⁇ 4 and 95% N2) atmosphere for 4 hours with 2°C/min temperature ramp rate.
  • the final catalyst was composed of about 0.80 wt.% Au and 1.2 wt.% Pt.
  • FIG. 1 provides an image of this analysis. The image shows that platinum and gold metal was deposited on the external surface of the carbon black extrudate forming a shell coating the outer surfaces the carbon black extrudate.
  • FIG. 2 provides a magnified view of one of catalyst extrudate cross-sections with measurements of the diameter of the carbon black extrudate (i.e., 1.14 mm) and thickness of the platinum and gold shell (average of about 100 pm) on the carbon black extrudate outer surface.
  • Extrudates based on carbon black Cabot Monarch 700 with glucose and hydroxyethylcellulose binder and subsequent catalyst with 0.80 wt.% Au and 1.20 wt.% Pt were prepared by mixing carbon black Cabot Monarch 700 (42.0 g) and a binder solution (145.8 g prepared by heating a solution containing 3.4 wt% hydroxyethylcellulose and 28.6 wt% glucose at 80°C overnight)), The resultant paste was loaded into a syringe and the material was extrudated into spaghetti-like strings with a 1.5 mm diameter.
  • Catalyst beds were vibration packed with 1.0 mm glass beads at the top to approximately 8 cm depth, followed by catalyst (67 cm bed depth containing 20.0 g, 0.80 wt.% Au + 1.2wt.% Pt on Cabot Monarch 700 carbon black pellets with a length of 0.5 cm and diameter of 1.5 mm prepared using the method described in Example 3), then 1.0 mm glass beads at the bottom to approximately 8 cm depth. Quartz wool plugs separated the catalyst bed from the glass beads.
  • the packed reactor tube was clamped in an aluminum block heater equipped with PID controller. Gas (compressed dry air) and liquid flows were regulated by mass flow controller and HPLC pump, respectively. A back pressure regulator controlled reactor pressure as indicated in Table 6. The catalyst was tested for approximately 350 hours of time on stream (TOS).
  • TOS time on stream
  • Table 6 describes the fixed bed reactor conditions and resultant extrudate catalyst performance.
  • the catalyst productivity in Table 6 is 35 gram (glucaric acid) per gram (Pt+Au) 1 hr 1 or 0.70 gram (glucaric acid) per gram (catalyst) 1 hr 1 .
  • Sample 1 Monarch 700 carbon black material.
  • Sample 2 Fresh Monarch 700 extrudate prepared in accordance with this Example.
  • Sample 3 Monarch 700 extrudate of Example 4 following 350 hours on stream in a fixed bed reactor (described in Example 6).
  • Sample 4 An aqueous solution (915.0 g) containing 4.0 wt% hydroxyethylcellulose (Sigma-Aldrich, SKU 54290, viscosity 80-125 cP, 2% in H2O (205Q) and 56.0 wt% glucose (ADM Com Processing, Dextrose Monohydrate 99.7DE with 91.2255 wt% Glucose content ) was prepared by stirring 36.6 g hydroxyethylcellulose and 561.7 g Dextrose Monohydrate in 316.7 ml D.I. water at 80°C for 16 hours.
  • this viscous solution was added to 400.0 g carbon black powder (Cabot Monarch 700) in a blender/kneader and the material was mixed/kneaded for 1 hour. The material was then loaded into a 1” Bonnot BB Gun Extruder and extrudated into spaghetti like strings with ca. 1.5 mm diameter at cross section. These strings were dried under a dry air purge in a 120°C oven for 16 hours and then pyrolyzed at 800 °C for 2 hours with 5°C/min ramp rate under a nitrogen purge. The final carbonized binder content was to be 36 wt%.
  • Sample 7 An aqueous solution (166.0 g) containing 4.0 wt% hydroxyethylcellulose (Sigma-Aldrich, SKU 54290, viscosity 80-125 cP, 2% in H2O (205Q) and 56.0 wt% glucose (ADM Com Processing, Dextrose Monohydrate 99.7DE with 91.2255 wt% Glucose content ) was prepared by stirring 6.64 g hydroxyethylcellulose and 84.8 g Dextrose Monohydrate in 74.6 ml D.I. water at 80°C for 16 hours.
  • this viscous solution was added to 60.0 g carbon powder (Asbury 5368) in a blender/kneader and the material was mixed/kneaded for 1 hour. The material was then loaded into a l” Bonnot BB Gun Extruder and extrudated into spaghetti like strings with ca. 1.5 mm diameter at cross section. These strings were dried under a dry air purge in a 120°C oven for 16 hours and then pyrolyzed at 800 °C for 2 hours with 5°C/min ramp rate under a nitrogen purge. The final carbonized binder content was 40 wt%.
  • Sample 8 Commercially available activated carbon extrudate Slid Chemie G32H-N- 75.
  • FIG. 3 presents a plot of the cumulative pore volume (%) as a function of mean pore diameter for a raw Monarch 700 carbon black material.
  • FIG. 4 presents a plot of the cumulative pore volume (%) as a function of mean pore diameter for a fresh catalyst prepared from a carbon black extrudate using Monarch 700 and a glucose/hydroxyethylcellulose binder.
  • FIG. 5 presents a plot of the cumulative pore volume (%) as a function of mean pore diameter for the catalyst extrudate of FIG. 2 following 350 hours of use in a fixed bed reactor for the oxidation of glucose to glucaric acid.
  • FIG. 6 presents a plot of the cumulative pore volume (%) as a function of mean pore diameter for a extrudate using Monarch 700 carbon black and a glucose/hydroxyethyl cellulose binder.
  • FIG. 7 presents a plot of the cumulative pore volume (%) as a lunction of mean pore diameter for a extrudate using Sid Richardson SC 159 carbon black and a glucose/hydroxyethyl cellulose binder.
  • FIG. 8 presents a plot of the cumulative pore volume (%) as a lunction of mean pore diameter for a extrudate using Sid Richardson SC 159 carbon black and a glucose/hydroxyethyl cellulose binder prepared in accordance with Example 12.
  • FIG. 9 presents a plot of the cumulative pore volume (%) as a function of mean pore diameter for a extrudate using Asbury 5368 carbon black and a glucose/hydroxyethyl cellulose binder.
  • FIG. 10 presents a plot of the cumulative pore volume (%) as a lunction of mean pore diameter for a commercially available activated carbon extrudate of Slid Chemie G32H-N-75.
  • FIG. 11 presents a plot of the cumulative pore volume (%) as a lunction of mean pore diameter for a commercially available activated carbon extrudate of Donau Supersorbon K4- 35.
  • FIG. 12 presents the pore size distribution for an extrudate using Sid Richardson SC159 carbon black and a glucose/hydroxyethyl cellulose binder measured by mercury porosimetry. These plots show that the micropore contribution to pore volume for carbon black extrudate catalysts (fresh and after use) is very low. In particular, the plots show that the micropore contribution (pores ⁇ 3nm) is less than 10% of the BJH pore volume. In some instances, the micropore contribution (pores ⁇ 3nm) is less than 6% of the BJH pore volume, and in some instances the micropore contribution (pores ⁇ 3nm) is less than 4% of the BJH pore volume.
  • the micropore contribution to pore volume for an activated carbon extrudate catalyst is exceedingly high at 40%.
  • the plots show that the contribution to pore volume from pores having a mean diameter from about 10 nm to 50 nm for the carbon black catalysts was about 40% or higher.
  • the contribution to pore volume from pores having a mean diameter from about 10 nm to 50 nm for the activated carbon catalyst was less than 15%.
  • the plots show that the contribution to pore volume from pores having a mean diameter from about 10 nm to 100 nm for the carbon black catalysts was about 70% or higher.
  • the contribution to pore volume from pores having a mean diameter from about 10 nm to 100 nm for the activated carbon catalyst was 15% or less.
  • Example 7 Testing of Au/Pt Carbon Black Extrudate Catalysts (using Cabot Vulcan XC72) in a Fixed-Bed Reactor for the Oxidation of Glucose to Glucaric Acid
  • Extrudates based on carbon black Cabot Vulcan XC72 and subsequent catalyst with 0.80 wt.% Au and 1.20 wt.% Pt were prepared by mixing carbon black Cabot Vulcan XC72 (36.4 g) and a binder solution (136.5 g prepared by heating a solution containing 3.7 wt% hydroxyethylcellulose and 24.4 wt% glucose at 80°C overnight). The resultant paste was loaded into a syringe and the material was extrudated into spaghetti- like strings with a 1.5 mm diameter followed by drying at 120°C for 4 hours in air, and pyrolysis at 350°C for 2 hours under a nitrogen atmosphere.
  • the final binder content in pyrolyzed carbon extrudates was 30 wt%.
  • the catalysts were prepared using the method described in Example 3. The catalyst was tested in the same 12.7 mm (0.5-inch) OD fixed-bed reactor as in Example 6. Table 8 describes the fixed bed reactor conditions and resultant extrudate catalyst performance.
  • the catalyst productivity in Table 8 is 36 gram (glucaric acid) per gram (Pt+Au) 1 hr 1 or 0.72 gram (glucaric acid) per gram (catalyst) 1 hr 1 .
  • Example 9 The same synthesis procedure described in Example 6 was used to prepare Pt- Au catalysts supported on high surface area activated carbon.
  • the activated carbon extrudates were crushed and sieved to ⁇ 90 pm prior to the catalyst preparation and screening.
  • the catalysts were screened in the same reactor under the same conditions described in Example 2(B)(ii). As shown in Table 9, the high surface area activated carbon carriers were found to exhibit lower activity and lower selectivity (as defined herein).
  • aqueous solution containing 4.0 wt% hydroxyethylcellulose (Sigma- Aldrich, SKU 54290, viscosity 80-125 cP, 2% in PhO (20°C)) and 56.0 wt% glucose (ADM Corn Processing, Dextrose Monohydrate 99.7DE with 91.2255 wt% Glucose content) was prepared by stirring 4.5 g hydroxyethylcellulose and 69.4 g Dextrose Monohydrate in 39.1 ml D.I. water at 80°C overnight.
  • this viscous solution was added to 50 g carbon black powder (Sid Richardson SC159, 231 m 2 /g) in a blender/kneader and the material was mixed/kneaded for 1 hour. The material was then loaded into a 1” Bonnot BB Gun Extruder and extrudated into spaghetti like strings with ca. 1.5 mm diameter at cross section. These strings were dried under a dry air purge in a 120°C oven overnight and then pyrolyzed at 800°C for 4 hours with 5°C/min ramp rate under a nitrogen purge. The extruded and pyrolyzed samples were cut into small pieces of about 0.5 cm long for testing.
  • the ASTM attrition index is a measurement of the resistance of a catalyst or extrudate particle to attrition wear, due to the repeated striking of the particle against hard surfaces within the specified test drum.
  • the diameter and length of the dram is similar to that described in ASTM D4058, with a rolling apparatus capable of delivering 55 to 65 RPM of rotation to the test dram.
  • the percentage of the original sample that remains on a 20-mesh sieve is called the "Percent Retained" result of the test.
  • the results of the test can be used, on a relative basis, as a measure of fines production during the handling, transportation, and use of the catalyst or extrudate material. A percent retained result of > 97% is desirable for an industrial application.
  • the abrasion loss is an alternate measurement of the resistance of a catalyst or extrudate particle to wear, due to the intense horizontal agitation of the particles within the confines of a 30-mesh sieve. The results of this procedure can be used, on a relative basis, as a measure of fines production during the handling, transportation, and use of the catalyst or adsorbent material. An abrasion loss of ⁇ 2 wt% is desired for an industrial application. Approximately 100 g of the extrudate material prepared in example 9 above was first de-dusted on a 20-mesh sieve by gently moving the sieve side-to-side at least 20 times.
  • the de-dusted sample was then transferred to the inside of a clean, 30-mesh sieve stacked above a clean sieve pan for the collection of fines.
  • the complete sieve stack was then assembled onto a RO-Tap RX-29 sieve shaker, covered securely and shaken for 30 minutes.
  • the fines generated were weighed to provide a sample abrasion loss of 0.016 wt.%.
  • Example 10 Testing of Au/Pt Carbon Black Extrudate Catalysts of Example 9 in a Fixed-Bed Reactor for the Oxidation of Glucose to Glucaric Acid
  • the glucose to glucaric acid oxidation reaction was conducted in a 1 ⁇ 2’ ’ OD by 83 cm long 316 stainless steel tube with co-current down-flow of gas and liquid.
  • Catalyst beds were vibration packed with 1.0 mm glass beads at the top to approximately 10 cm depth, followed by catalyst (63 cm bed depth containing 27.4 g, 0.60wt% Au + 0.90wt% Pt on Sid Richardson SC159 carbon black pellets with a length of 0.5 cm and diameter of 1.4 mm prepared using the method described, then 1.0 mm glass beads at the bottom to approximately
  • Quartz wool plugs separated the catalyst bed from the glass beads.
  • the packed reactor tube was clamped in an aluminum block heater equipped with PID controller. Gas (compressed dry air) and liquid flows were regulated by mass flow controller and HPLC pump, respectively. A back pressure regulator controlled reactor pressure as indicated in Table 11.
  • the catalyst was tested for ca. 920 hours on stream and showed stable performance.
  • Table 11 describes the fixed bed reactor conditions and resultant extrudate catalyst performance.
  • the catalyst productivity in Table 11 is 23 gram (glucaric acid) per gram (Pt+Au) 1 hr 1 or 0.35 gram (glucaric acid) per gram (catalyst) 1 hr 1 .
  • Example 11 Testing of Au/Pt Carbon Black Extrudate Catalysts (using Asbury 5368) in a Fixed-Bed Reactor for the Oxidation of Glucose to Glucaric Acid
  • the packed reactor tube was clamped in an aluminum block heater equipped with PID controller. Gas (compressed dry air) and liquid flows were regulated by mass flow controller and HPLC pump, respectively. A back pressure regulator controlled reactor pressure as indicated in Table 12.
  • the catalyst was tested for ca. 240 hours TOS and showed stable performance.
  • Table 12 describes the fixed bed reactor conditions and resultant extrudate catalyst performance.
  • the catalyst productivity in Table 12 is 20 gram (glucaric acid) per gram (Pt+Au) 1 hr 1 or 0.27 gram (glucaric acid) per gram (catalyst) 1 hr 1 .
  • Sid Richardson SC 159 carbon black extrudates prepared from the method described in example 9 were oxidized in air at 300°C for 3 hours with 5°C/min ramp rate to give partially oxidized pellets.
  • an aqueous solution (9.0 ml) containing 0.18 g Au in the form of Me4NAu02 and 0.31 g Pt in the form of PtO(N03) was added.
  • the mixture was agitated to impregnate the carbon black support and was dried in a 60°C oven overnight under a dry air purge.
  • the sample was then reduced at 350°C under forming gas (5% H2 and 95% N2) atmosphere for 4 hours with 2°C/min temperature ramp rate.
  • the final catalyst was composed of ca. 0.50 wt% Au and 0.85 wt%
  • Pt By using other carbon black extrudates prepared from the method described herein, a series of Pt-Au extrudate catalysts spanning ranges in Au and Pt loadings, Pt/Au ratios and metal distributions (e.g., eggshell, uniform, subsurface bands) could be prepared.
  • the glucose to glucaric acid oxidation reaction was conducted in a 1 ⁇ 2” OD by 83 cm long 316 stainless steel tube with co-current down-flow of gas and liquid.
  • Catalyst beds were vibration packed with 1.0 mm glass beads at the top to approximately 6 cm depth, followed by catalyst (70.4 cm bed depth containing 34.5 g, 0.50wt% Au + 0.85wt% Pt on partially oxidized Sid Richardson SC159 carbon black pellets with a length of 0.5 cm and diameter of 1.5 mm prepared using the method described in Example 2), then 1.0 mm glass beads at the bottom to approximately 6 cm depth. Quartz wool plugs separated the catalyst bed from the glass beads. [0209] The packed reactor tube was clamped in an aluminum block heater equipped with PID controller. Gas (compressed dry air) and liquid flows were regulated by mass flow controller and HPLC pump, respectively. A back pressure regulator controlled reactor pressure as indicated in Table 13. The catalyst was tested for ca.
  • Table 13 describes the fixed bed reactor conditions and resultant extrudate catalyst performance.
  • the catalyst productivity in Table 13 is 26 gram (glucaric acid) per gram (Pt+Au) 1 hr 1 or 0.36 gram (glucaric acid) per gram (catalyst) 1 hr 1 .
  • An aqueous solution (490.0 g) containing 8.0 wt% Mowiol 8-88 Poly(vinylalcohol) (Mw 67k, Sigma-Aldrich 81383) and 36.0 wt% glucose (ADM Corn Processing, Dextrose Monohydrate 99.7DE with 91.2255 wt% Glucose content) was prepared by stirring 39.2 g Mowiol 8-88 Poly(vinylalcohol) and 193.4 g Dextrose Monohydrate in 257.4 ml D.I. water at 70°C overnight.
  • this solution was added to 230 g carbon black powder (Sid Richardson SC159) in a blender/kneader and the material was mixed/kneaded for 1 hour. The material was then loaded into a 1” Bonnot BB Gun Extruder and extrudated into spaghetti like strings with ca. 1.5 mm diameter at cross section. These strings were further dried in a 90°C oven overnight under a dry air purge and then pyrolyzed at 600°C for 4 hours with 5°C/min ramp rate in a nitrogen atmosphere. The final carbonized binder content was 24 wt.%.
  • the resultant extrudate (3-5 mm in length) possessed a surface area of 149 m 2 /g, a pore volume of 0.35 cm 3 /g and a mean pore diameter of 16 nm.
  • the mean radial piece crush strength of these pellets was measured to be 11.5 N/rnm.
  • the single piece crush strength was measured to be 42N.
  • Example 14 Testing of Au/Pt Activated Carbon Extrudate Catalysts (using Clariant Donau Supersorbon K4-35 Activated Carbon Extrudate) in a Fixed-Bed Reactor for the Oxidation of Glucose to Glucaric Acid
  • Catalyst based on activated carbon Clariant Supersorbon K 4-35 was prepared using the same method described in Example 7. Oxidation of glucose reactions were conducted using the same method described in Example 2(B)(ii). A catalyst bed depth of 73cm containing 27.0 g, 0.53 wt.% Au + 0.90 wt.% Pt on Clariant Supersorbon K 4-35 activated carbon pellets with a length of 0.5 cm and diameter of 1.4 mm was tested for approximately 40 hours of time on stream (TOS). Table 14 describes the fixed bed reactor conditions and resultant extrudate catalyst performance. After 40 hours on stream the glucaric acid yield and the catalyst productivity were determined to be lower than the shaped carbon black catalysts of the invention.
  • aqueous solution (915 g) containing 4.0 wt% hydroxyethylcellulose (HEC) (Sigma- Aldrich, SKU 54290, viscosity 80-125 cP at 2% in H2O (20°C)) and 56.0 wt% glucose (ADM Corn Processing, Dextrose Monohydrate 99.7DE with 91.2 wt% Glucose content) was prepared by stirring 36.6 g hydroxyethylcellulose and 561.7 g Dextrose Monohydrate in 316.7 ml D.I. water at approximately 80°C for 2 hours. To this viscous solution was added 400.1 g of Sid Richardson SC159 carbon black powder, the mixture was then mixed for a further 10 minutes.
  • HEC 4.0 wt% hydroxyethylcellulose
  • SKU 54290 viscosity 80-125 cP at 2% in H2O (20°C)
  • 56.0 wt% glucose ADM Corn Processing, Dextrose Monohydrate 99.7DE with 91.2 wt
  • aqueous solution 3813 g containing 4.0 wt% hydroxyethylcellulose (HEC) (Sigma-Aldrich, SKU 54290, viscosity 80-125 cP at 2% in H2O (20°C)) and 56.0 wt% glucose (ADM Corn Processing, Dextrose Monohydrate 99.7DE with 91.2 wt% Glucose content) was prepared by stirring 153 g hydroxyethylcellulose and 2340 g Dextrose Monohydrate in 1320 ml D.I. water at approximately 80°C for 3 hours.
  • HEC hydroxyethylcellulose
  • SKU 54290 viscosity 80-125 cP at 2% in H2O (20°C)
  • 56.0 wt% glucose ADM Corn Processing, Dextrose Monohydrate 99.7DE with 91.2 wt% Glucose content
  • aqueous solution 3813 g containing 4.0 wt% of Dow Cellosize HEC QP 40 hydroxyethylcellulose (viscosity 80-125 cP at 2% in H2O (20°C)), and 56.0 wt% glucose (ADM Corn Processing, Dextrose Monohydrate 99.7DE with 91.2 wt% Glucose content) was prepared by stirring 153 g hydroxyethylcellulose and 2340 g Dextrose Monohydrate in 1320 ml D.I. water at approximately 80°C for 3 hours.
  • 650g batches of the combined dried & screened extrudate of were then pyrolyzed in a rotary tube furnace under a nitrogen purge at 800°C for 2 hours, each batch producing approximately 350g of pyrolyzed product.
  • 650g of the carbon black extrudates prepared from Sid Richardson SC 159 with glucose and hydroxyethylcellulose binders
  • OTF-1200X-5L-R-III-UL Quartz Tube Three Zone Rotary Tube Furnace
  • the carbon black extrudates were pyrolyzed with the 5" quartz tube rotating at 4.0 rpm under a nitrogen atmosphere at 800°C for 2 hours with the following temperature ramp: ambient temperature to 200°C at 10°C/min, 200°C to 600°C at 5°C/min, 600°C to 800°C at 10°C/min, hold at 800°C for 2 hours, then allowed to cool to ambient temperature, still under nitrogen purge. 350 g of pyrolyzed carbon black extrudates were recovered, with 51.5% yield by mass. The properties of the batch-pyrolyzed extrudate are shown in Table 18.
  • Cabot Vulcan XC72 carbon black particles used in this experiment were 150 to 300 pm sized particles crushed and sieved from extrudate pellets prepared from the method described in previous examples. Reactions were conducted in a 6.4 mm (0.25 inch) OD by 38 cm long zirconium tube with co-current down-flow of gas and liquid. Catalyst beds were vibration packed with 200 to 300 pm sized glass beads at the top to approximately 5 cm depth, followed by catalyst (28 cm bed depth containing 1.9 g, 0.90 wt.% Rh + 2.1 wt.% Pt on carbon black particles, 150 to 300 pm particle size), then 200 to 300 pm sized glass beads at the bottom to approximately 5 cm depth. Quartz wool plugs separated the catalyst bed from the glass beads.
  • the packed reactor tube was clamped in an aluminum block heater equipped with PID controller. Gas (compressed hydrogen) and liquid flows were regulated by mass flow controller and HPLC pump, respectively.
  • Substrate solution contains 0.80M D-glucaric acid- 1,4:6, 3-dilactone, 0.40M HBr and 2.0M water in acetic acid.
  • a back pressure regulator controlled reactor pressure as indicated in Table 21. External temperature of top half reactor and bottom half reactor was controlled at 110°C and 160°C respectively. The catalyst was tested for 350 hours on stream and showed stable performance. Table 21 describes the fixed bed reactor conditions and resultant catalyst performance.
  • Catalyst (approximately 10 mg) was weighed into a glass vial insert followed by addition of an aqueous 1,2,6-hexanetriol solution (200 pi of 0.8 M).
  • the glass vial insert was loaded into a reactor and the reactor was closed. The atmosphere in the reactor was replaced with hydrogen and pressurized to 670 psig at room temperature. The reactor was heated to 160°C and maintained at the respective temperature for 150 minutes while vials were shaken. After 150 minutes, shaking was stopped and reactor was cooled to 40°C. Pressure in the reactor was then slowly released. The glass vial insert was removed from the reactor and centrifuged. The solution was diluted with methanol and analyzed by gas chromatography with flame ionization detection. The results are shown in Table 22.
  • a suitably concentrated aqueous solution of ammonium metatungstate, H26N6W12O40 was added to approximately 500 mg of Ensaco 250G and agitated to impregnate the carbon black support.
  • the sample was thermally treated at 600°C under a nitrogen atmosphere for 3 hours with 5 °C/min temperature ramp rate.
  • Suitably concentrated aqueous solutions of Pt(NMe4)2(OH)6 was added to 50 mg of the above sample and agitated to impregnate the carbon supports.
  • the samples were dried in an oven at 40°C overnight under static air and then reduced at 250 °C under forming gas (5% 3 ⁇ 4 and 95% N2) atmosphere for 3 hours with 5 °C/min temperature ramp rate.
  • the final catalysts had a metal content of approximately 4.5 wt.% Pt and 2 wt.% W.
  • Product composition was determined by HPLC analysis using a Thermo Ultimate 3000 dual analytical chromatography system.
  • Hexamethylenediamine (HMDA), hexamethyleneimine (HMI) and pentylamine were eluted with a mobile phase consisting of PbO/MeCN/TFA and detected using a charged aerosol detector (CAD).
  • CAD charged aerosol detector
  • 1,6-Hexanediol (HDO) was eluted with a mobile phase consisting of H 2 0/MeCN/TFA and detected using a refractive index detector (RI).
  • NMP N-methyl-2- pyrrolidone
  • a suitably concentrated aqueous solution of Ru(N0)(N0 3 ) 3 was added to a 96 vial array of carbon supports containing 10 or 20 mg of support in each vial.
  • the volume of ruthenium solution was matched to equal the pore volume of the support.
  • Each sample was agitated to impregnate the support.
  • the samples were dried in an oven at 60°C for 12 hours under a dry air purge.
  • the catalysts were reduced under forming gas (5 % 3 ⁇ 4 and 95 % N2) at 250 °C for 3 hours using a 2°C/min temperature ramp rate.
  • the final catalysts were composed of 2 weight percent ruthenium.
  • a substrate solution consisting of 0.7M 1,6-hexanediol in concentrated aqueous NH 4 OH was added to an array of catalysts prepared as described above.
  • the vials were covered with a Teflon pinhole sheet, a silicone pinhole mat, and a steel gas diffusion plate.
  • the reactor insert was placed in a pressure vessel and purged 2x with NH 3 gas.
  • the pressure vessel was charged to 100 psi with NH 3 gas and then to 680 psi with N 2 at ambient temperature.
  • the reactor was placed on a shaker and vortexed at 800 rpm at 160°C. After 3 hours, the reactor was cooled to room temperature, vented, and purged with nitrogen prior to being unsealed.
  • a substrate solution consisting of 1.549M 1,6-hexanediol in concentrated aqueous NH 4 OH was added to an array of catalysts prepared as described above.
  • the vials were covered with a Teflon pinhole sheet, a silicone pinhole mat, and a steel gas diffusion plate.
  • the reactor insert was placed in a pressure vessel and purged 2x with NH 3 gas.
  • the pressure vessel was charged to 100 psi with NH 3 gas and then to 680 psi with N 2 at ambient temperature.
  • the reactor was placed on a shaker and vortexed at 800 rpm at 160°C. After 3 hours, the reactor was cooled to room temperature, vented, and purged with nitrogen prior to being unsealed.
  • Catalyst amounts from 15-25 mg were weighed in to glass vials of a 96 vial array.
  • the catalysts were reduced under forming gas (5% 3 ⁇ 4 and 95% N2) at 450°C for 3 hours using a 2°C/min temperature ramp rate.
  • Catalysts were passivated with 1% O2 in N2 at room temperature before removing from the tube furnace.
  • the reactor insert was placed in a pressure vessel and purged 2x with NH3 gas.
  • the pressure vessel was charged to 100 psi with NH3 gas and then to 680 psi with N2 at ambient temperature.
  • the reactor was placed on a shaker and vortexed at 800 rpm at 160°C. After 3 hours, the reactor was cooled to room temperature, vented, and purged with nitrogen prior to being unsealed.
  • a carbon extrudate prepared from carbon black Ensaco 250G and a carbohydrate binder, was crushed and sized to 150-300um.
  • a suitably concentrated aqueous solution of RU(N0)(N0 3 ) 3 was added to 4.77 g of the crushed extrudate and agitated to impregnate the support.
  • the volume of metal solution was matched to equal the pore volume of the support.
  • the samples were dried in an oven at 60 °C for 12 hours under a dry air purge.
  • the catalyst was reduced under forming gas (5% 3 ⁇ 4 and 95% N2) at 250 °C for 3 hours using a 2°C/min temperature ramp rate.
  • the catalyst was washed with water and again sized to 106-300um to remove any fines that may have been generated during the metal impregnation step.
  • a carbon extrudate prepared from carbon black Ensaco 250G and a carbohydrate binder, was crushed and sized to 106-300um.
  • a suitably concentrated aqueous solution containing NiiNChk bfTO and Ru(N0)(N0 3 ) 3 was added to 10 g of the crushed extrudate and agitated to impregnate the support.
  • the volume of metal solution was matched to equal the pore volume of the support.
  • the catalyst was dried in an oven at 60°C for 12 hours under a dry air purge then thermally treated under N2 at 300°C for 3 hours.
  • the catalyst was reduced under forming gas (5% 3 ⁇ 4 and 95% N2) at 450°C for 3 hours using a 2°C/min temperature ramp rate.
  • the catalyst was passivated with 1 % O2 in N2 at room temperature before removing from the tube lurnace.
  • the catalyst was washed with water and again sized to 106-300um to remove any fines that may have been generated during the metal impregnation step.
  • the reaction was performed in a 0.25 inch OD by 570 mm long 316 stainless steel tube with a 2 um 316 stainless steel frit at the bottom of the catalyst bed.
  • the reactor was vibration packed with lg of SiC beads (90-120um) followed by 3g of a 2% by weight ruthenium on carbon Ensaco 250G catalyst (100-300 um) and finally 2.5g of SiC beads at the top. A 1 ⁇ 4 inch layer of glass wool was used between each layer.
  • the packed reactor tube was vertically mounted in an aluminum block heater equipped with PID controller.
  • An HPLC pump was used to deliver liquid feed to the top of the reactor and a back pressure regulator was used to control reactor pressure.
  • the reaction was run at 160°C. Product effluent was collected periodically for analysis by HPLC. No decline in catalyst activity was observed after 1650h.
  • NMP N-methyl-2-pyrrolidone
  • Feed 1 0.7M 1,6-hexanediol and 0.14M NMP in concentrated NH40H.
  • Feed 2 0.7M 1,6-hexanediol, 0.14M hexamethyleneimine, and 0.14M NMP in concentrated NH40H.
  • Feed 3 1.54M 1,6-hexanediol, 0.308M hexamethyleneimine, and 0.308M NMP in concentrated NFUOH.
  • a carbon black extrudate was prepared according to the following procedure. To prepare a binder solution, 552.67 grams of dextrose monohydrate (ADM Corn Processing, 91.22 wt% glucose content) was dissolved in 455.63 grams of DI water at 70°C. The solution was then cooled to 50°C. 20.51 grams of hydro xyethylcellulose we added to the mixture and stirred overnight.
  • dextrose monohydrate ADM Corn Processing, 91.22 wt% glucose content
  • the carbon was split into 4 approx. 250 gram portions and pyrolyzed in a rotary kiln. Each portion was treated separately in the rotary kiln. The temperature of the kiln was ramped at a rate of 30°C/min until reaching a maximum 800°C. This temperature is held for 2 hours before cooling. The kiln was set to rotate at 6.6 rpms. During the temperature ramp, a large amount of water vapor and other pyrolysis products were formed. From approximately 350°C-450°C a large amount of gas was formed.
  • a second catalyst was prepared using the same method, except that nitric acid was not added during the metal deposition.
  • Example 27 Hydrogenolysis of Glycerol
  • the first nickel-rhenium catalyst (w/nitric acid addition during metal deposition) prepared in Example 26 was evaluated for hydrogenolysis of glycerol.
  • the catalyst was loaded into a 30 cc reactor. The reactor was then purged with hydrogen at a flow rate of 100 ml/min. Following purging of the reactor, the reactor was pressurized to 1800 psi with hydrogen. Subsequently, hydrogen and glycerol supplied to the reactor as a 40 wt.% solution with sodium hydroxide co-catalyst. Details of the evaluation are provided in Table 34.
  • the catalyst was evaluated over various reaction temperatures, various hydrogen flowrates and various co-catalyst concentrations. Periodic liquid samples were analyzed by HPLC and GC. The pH of all samples was between 1 5 99 Propylene glycol yield and selectivity as well as glycerol conversion was enhanced with this catalyst.
  • the second nickel-rhenium catalyst prepared in Example 26 was also evaluated for glycerol hydrogenolysis. Details of the evaluation are provided in Table 36. Periodic liquid samples were analyzed by HPLC and GC. Conversion increased significantly with increased hydrogen flow.
  • Ni-Re catalysts prepared in Example 26 were analyzed using energy dispersive X-ray spectroscopy (EDX) with scanning electron microscopy (SEM).
  • FIG. 14 presents a SEM image of the Ni-Re on carbon black extrudate catalyst Nitric acid was not added during nickel deposition for this catalyst.
  • FIG. 15 presents the results of EDX analysis for this catalyst. The EDX results show that nickel reaches inner regions of the extrudate support (see Sample 2).
  • FIG. 16 presents a SEM image of the second Ni-Re on carbon black extrudate catalyst. Nitric acid was added during nickel deposition for this catalyst.
  • FIG. 17 presents the results of EDX analysis for this catalyst. The EDX results show that nickel did not deposit on inner regions of the extrudate support (see Samples 2 and 3). Instead, nickel concentrated as a shell on the outer regions of the catalyst.

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