Classifications

• • 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
  • C07C29/132—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group
  • C07C29/136—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group of >C=O containing groups, e.g. —COOH
  • C07C29/147—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group of >C=O containing groups, e.g. —COOH of carboxylic acids or derivatives thereof
  • C07C29/149—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group of >C=O containing groups, e.g. —COOH of carboxylic acids or derivatives thereof with hydrogen or hydrogen-containing gases
• • 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
  • B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
  • B01J23/32—Manganese, technetium or rhenium
  • B01J23/36—Rhenium
• • 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
  • B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
  • B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
  • B01J23/889—Manganese, technetium or rhenium
  • B01J23/8896—Rhenium
• • 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
  • B01J23/54—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
  • B01J23/656—Manganese, technetium or rhenium
  • B01J23/6567—Rhenium
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
  • C07C2601/00—Systems containing only non-condensed rings
  • C07C2601/18—Systems containing only non-condensed rings with a ring being at least seven-membered

Definitions

• the invention relates to a process for the preparation of alcohols by hydrogenation of compounds containing carbonyl groups on Re-containing, oxidatively pretreated activated carbon supported catalysts while avoiding the formation of ethers.
• EP-A-0 848 991 describes a catalyst containing palladium, silver, rhenium and iron, e.g. Maleic acid or its ester can hydrogenate to butanediol.
• Maleic acid or its ester can hydrogenate to butanediol.
• maleic acid at 100 to 162 ° C
• a selectivity to butanediol of 89.5% is achieved.
• the hydrogenation success is diminished by the fact that 5.6% tetrahydrofuran (THF) is formed as a by-product as ether.
• 4% of n-butanol is formed as a further by-product.
• No. 5,698,749 describes catalysts which contain an element from Group VIII and at least rhenium, tungsten or molybdenum on an oxidatively pretreated carbon support.
• hydrogenation of aqueous maleic acid in turn produces, in addition to butanediol, THF.
• Butane diol is obtained with up to 92.8% selectivity.
• THF is still 1.6%
• the other by-product n-butanol is 4.6%.
• the object of the present invention is to provide rhenium catalysts which can be used to hydrogenate carbonyl compounds to alcohols with high overall selectivity, preferably without forming ethers.
• carbonyl compounds can be catalytically hydrogenated to the corresponding alcohols without ether formation by using a catalyst composed of 0.01 to 50% by weight of rhenium and 0 to 20% by weight, based in each case on the total weight of the catalyst.
• a catalyst composed of 0.01 to 50% by weight of rhenium and 0 to 20% by weight, based in each case on the total weight of the catalyst.
• the ether content is preferably below 0.2%, particularly preferably below 0.1%.
• the invention relates to a process for the preparation of alcohols by catalytic hydrogenation of carbonyl compounds, in which 0.01 to 50% by weight of rhenium and 0 to 20% by weight, based in each case on the total weight of the catalyst, of at least one further catalyst Metals selected from Zn, Cu, Ag, Au, Ni, Fe, Cr, V, on oxidatively pretreated activated carbon as a carrier, and the corresponding catalyst and its use in the catalytic hydrogenation of carbonyl compounds.
• the additional elements can essentially modify the catalyst in terms of activity and selectivity with respect to the hydrogenolysis products. However, they are not essential.
• the proportion of rhenium (calculated as metal) is preferably 0.1 to 20% by weight, particularly preferably 1 to 15% by weight, based on the total weight of the catalyst.
• a catalyst which consists only of rhenium on oxidatively pretreated activated carbon as a carrier.
• the catalyst is preferably arranged as a fixed bed.
• the commercially available activated carbons are generally suitable as activated carbons. Preference is given to using those which contain little chlorine and sulfur and whose micropore fraction is as low as possible.
• the oxidative treatment of the activated carbons can be done with conventional oxidizing agents. Examples include nitric acid, hydrogen peroxide, sodium perborate, oxygen, air, ozone, ammonium persulfate, sodium hypochlorite or hypochlorous acid, perchloric acid and salts of nitric acid, such as sodium nitrate or called platinum nitrate. Nitrates, sodium perborate, hydrogen peroxide and air are preferred.
• the activated carbon can be treated with the oxidizing agent before or during the application of the rhenium component or further catalyst components. Suitable processes are also described in US 5,698,749 and EP-A-0 848 991.
• Re 2 O 7 , ReO 2 , ReCl 3 , ReCl 5 , Re (CO) 5 Cl, Re (CO) 5 Br or Re (CO) 10 are usually used as the rhenium component.
• Re 2 O 7 is preferably used.
• platinum is also applied to the catalyst in addition to rhenium.
• the platinum can e.g. as platinum powder, oxide, hydrated oxide, nitrate, platinum (II) - or (IV) -chloride, platinum (IV) -hydrochloric acid, platinum (II) - or (IV) -bromide, platinum (II) -iodide, ice or trans-platinum (II) diamine chloride, cis or trans platinum (IV) diamine chloride, platinum (II) diamine nitrite, platinum (II) - ethylenediamine chloride, platinum (II) - tetraamine chloride or chloride hydrate, platinum (II) tetraamine nitrate, platinum (0) tetrakis (triphenylphosphine), cis or. trans platinum (II) bis (triethylphosphine) chloride, cis or. trans-platinum (II) bis
• the active components in particular Re, can be applied by impregnation in one or more steps with an aqueous or alcoholic solution of the respective dissolved salts, impregnation with a solution of dissolved oxidic or metallic colloid of the active components, equilibrium adsorption in one or more steps of the in aqueous or salts dissolved in alcoholic solution or Equilibrium adsorption of dissolved oxidic or metallic colloid on the pretreated activated carbon.
• the active components can be applied to the activated carbon either simultaneously or in succession. Between the individual impregnation and equilibrium adsorption steps there is a drying step to remove the solvent.
• the active components are preferably applied in one step by impregnation with an aqueous salt solution or an aqueous oxidic colloid.
• the impregnated catalyst is dried.
• the drying temperature is 30-350 ° C, preferably 40
• the catalysts are usually activated before they are used. Hydrogen is preferably used for this.
• the activation temperature is 100
• the hydrogenation is carried out at 50-250 ° C, preferably at 60-220 ° C, particularly preferably at 70-190 ° C, very particularly preferably at 80-140 ° C.
• the reaction pressure is hydrogenated between 3 and 330 bar, preferably 20 and 300 bar, particularly preferably 30 and 300 bar.
• the pressure range is preferred for hydrogenation in the liquid phase in the fixed bed above 150 bar, in the fixed bed in the gas phase 3 to 100 bar and in the suspension 10 to 90 bar.
• Suitable starting materials for the hydrogenation are generally carbonyl compounds, such as aldehydes, carboxylic acids or esters or anhydrides thereof, or lactones, which may additionally contain double or triple CC compounds.
• aldehydes are propionaldehyde, butyraldehyde, crotonaldehyde, ethylhexanal, nonanal and glucose.
• carboxylic acids are succinic acid, fumaric acid, maleic acid, glutaric acid, adipic acid, 6- Hydroxycarboxylic acid, octanedioic acid, dodecanedioic acid, 2-cyclododecylpropionic acid and saturated or unsaturated fatty acids.
• Esters of the abovementioned acids for example methyl, ethyl, propyl or butyl esters, can be mentioned, and lactones, for example gamma-butyrolactone, delta-valerolactone or caprolactone, can also be used.
• Anhydrides such as succinic anhydride or maleic anhydride can also be used.
• Preferred starting materials are succinic acid, maleic acid, adipic acid, 2-cyclododecylpropionic acid, succinic anhydride, maleic anhydride and the esters of these acids and gamma-butyrolactone.
• the available products include 1,4-butanediol, 1, 6-hexanediol and 2-cyclododecylpropan-l-ol.
• the compounds to be hydrogenated can be hydrogenated in bulk or in solution.
• a suitable solvent is e.g. the hydrogenation product itself, or substances which are inert under the reaction conditions, such as alcohols, e.g. Methanol, ethanol, propanol or butanol. Ethers such as THF or ethylene glycol ether are also suitable.
• a preferred solvent is water, especially in the hydrogenation of carboxylic acids.
• the hydrogenation can be carried out in the gas or liquid phase and in one or more stages. In the liquid phase, both the suspension and the fixed bed procedure are possible. In exothermic reactions, the heat can be dissipated by external coolants (e.g. tube reactor). Boiling cooling in the reactor is also possible, especially if hydrogenation is carried out without recycling the product. A cooler in the return flow is recommended for product return.
• the hydrogenation is preferably carried out in the liquid phase at a pressure in the range from 150 to 300 bar and a temperature in the range from 80 to 140.degree.
• the catalyst is used in particular in the form of a fixed bed.
• the alcohols obtained in the process according to the invention are used, for example, as solvents and intermediates.
• 2-Cyclododecylpropan-l-ol is a sought-after musk fragrance.
• activated carbon Epibon® Spezial, from Lurgi

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• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Engineering & Computer Science (AREA)
• Materials Engineering (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
• Catalysts (AREA)
• Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
• Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)

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• 2000
  • 2000-03-24 DE DE10014646A patent/DE10014646A1/de not_active Withdrawn
• 2001
  • 2001-03-22 MY MYPI20011354A patent/MY128265A/en unknown
  • 2001-03-23 EP EP01936136A patent/EP1272270B1/de not_active Expired - Lifetime
  • 2001-03-23 ES ES01936136T patent/ES2317906T3/es not_active Expired - Lifetime
  • 2001-03-23 WO PCT/EP2001/003374 patent/WO2001070657A2/de not_active Ceased
  • 2001-03-23 JP JP2001568870A patent/JP2003528064A/ja not_active Withdrawn
  • 2001-03-23 DE DE50114672T patent/DE50114672D1/de not_active Expired - Fee Related
  • 2001-03-23 AT AT01936136T patent/ATE421378T1/de not_active IP Right Cessation
  • 2001-03-23 KR KR1020027012602A patent/KR100798548B1/ko not_active Expired - Fee Related
  • 2001-03-23 CN CNB018085237A patent/CN1183076C/zh not_active Expired - Fee Related
  • 2001-03-23 US US10/239,409 patent/US6765118B2/en not_active Expired - Fee Related

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