WO2015109381A1 - Monolithe de carbone et son procédé de production - Google Patents

Monolithe de carbone et son procédé de production Download PDF

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Publication number
WO2015109381A1
WO2015109381A1 PCT/CA2014/000041 CA2014000041W WO2015109381A1 WO 2015109381 A1 WO2015109381 A1 WO 2015109381A1 CA 2014000041 W CA2014000041 W CA 2014000041W WO 2015109381 A1 WO2015109381 A1 WO 2015109381A1
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WO
WIPO (PCT)
Prior art keywords
process according
precursor particles
latex
temperature
latex binder
Prior art date
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PCT/CA2014/000041
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English (en)
Inventor
Yuxing CUI
Eva Gudgin DICKSON
Original Assignee
Her Majesty The Queen In Right Of Canada, As Represented By The Minister Of National Defence
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by Her Majesty The Queen In Right Of Canada, As Represented By The Minister Of National Defence filed Critical Her Majesty The Queen In Right Of Canada, As Represented By The Minister Of National Defence
Priority to PCT/CA2014/000041 priority Critical patent/WO2015109381A1/fr
Priority to PCT/CA2014/050565 priority patent/WO2015109385A1/fr
Publication of WO2015109381A1 publication Critical patent/WO2015109381A1/fr

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Classifications

    • 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
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28054—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J20/28057—Surface area, e.g. B.E.T specific surface area
    • 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
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
    • 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
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
    • B01J20/28042—Shaped bodies; Monolithic structures
    • 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
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/3042—Use of binding agents; addition of materials ameliorating the mechanical properties of the produced sorbent
    • 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
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/3078—Thermal treatment, e.g. calcining or pyrolizing

Definitions

  • This application relates to air purification, especially in respirators, more particularly to monolithic carbonaceous adsorbents and to a process for preparing the adsorbents.
  • Exposure of civilians or military personnel and first responders to toxic gases and vapors without proper respiratory protection can be harmful, incapacitating and/or potentially lethal depending on the type and amount of substance(s) and duration of exposure. Efficient respiratory protection against such hazards is a problem which requires equipment such as air-purifying respirators designed to reduce or eliminate the inhalation exposure to harmful agents. Important factors in the performance of such air-purifying respirators include efficiency of removal of toxic agents, capacity to retain agents after removal, effective performance against a broad range of toxic agents, or design specific to particular agents, breathing resistance, size, weight and shape. All the preceding factors can influence the effectiveness of respiratory protection against toxic agents, and the ability of the wearer to perform useful or necessary functions while wearing the equipment.
  • Adsorbent materials housed in a filtering device attached to a close-fitting face mask provide protection from a variety of gases and vapors for a limited time.
  • the adsorbents presently used in respiratory protection primarily consist of granular activated carbon packed at maximum packing density into a container forming a bed of adsorbent.
  • the adsorbent bed must be immobilized in its final form by mechanical means, such as fixing a top and bottom plate in place under compression, with side walls providing the support for the top and bottom plates.
  • the granular adsorbents are characterized by a large internal surface and small pores.
  • Manufacture involves the carbonization of an organic raw material, which in the case of respirator adsorbents is commonly derived from coal or natural cellulosic materials such as coconut shell. Following carbonization, the material is crushed and sized to select a distribution of granule sizes. The carbonized material is then activated, which is a process of modifying the material by application of heat, steam, and other chemicals or gases to increase the internal surface area.
  • Some adsorbent materials are modified by post-activation addition of inorganic and organic materials called impregnants, intended to augment the adsorptive capacity of the carbon.
  • the current activated carbons used in respiratory protection are produced by carbonization of raw materials such as wood, coal and coconut shells at temperatures of at least 800°C in the absence of oxygen, followed by chemical or physical activation of the carbonized product. These materials show good adsorbent properties attributed mostly to their high specific surface area of 800-1500 ' m 2 /g which is contained predominantly within micropores. However, they are characterized by some major disadvantages.
  • the adsorbent bed must be made in a housing under compression to maintain the packing density and shape and the granules in the housing must be immobile with the aid of compressing the housing.
  • significant change to the housing such as rough handling, or a temperature increase resulting in expansion, would reduce the performances of the adsorbent bed due to air penetration through mobile granules resulting in less adsorbing interaction with micropores.
  • the possible friction between granules would also give fine powdery carbon causing malfunction of the respirator.
  • the adsorbing capacity would vary due to the difference of raw materials such as coal and coconut shell in terms of texture or ingredients.
  • Carbon structures have been prepared differently in prior art. Generally, the methods fall into two kinds.
  • the first kind is to bind a carbonized porous material using binding materials such as polymer.
  • a drawback is that the binder could block the pores which are essential to all applications. If the binding is followed by a second carbonization, the whole process is multistep, which is usually costly. As well, some adsorbing sites are not able to be accessed due to packing and molding.
  • the second method involves mechanical forces such as pressure or extrusion to make a carbon structure. The voids between beads or granules are reduced due to compression. This is required for gas storage or other applications that need compact packing to increase the adsorbing capacity per unit volume.
  • a low breathing resistance or pressure drop is critical while maintaining the adsorbing capability by having a reasonably high specific surface area and bulk density.
  • a new generation of respirator design which relies on the properties and structure of the adsorbent material, is needed to improve the general performance of both the respirator and users. Additionally, a cost effective and "green" preparation method is needed.
  • a process for preparing a self-supporting monolithic porous carbonaceous adsorbent structure comprising: drying a mixture of non-gelling polymeric carbon precursor particles and an organic latex binder at a temperature of 100°C or less to form a solid monolith of polymeric carbon precursor particles bound by an organic polymer matrix in a pre-determined shape; carbonizing the solid monolith in the pre-determined shape at a temperature of 800°C or less to form a self-supporting monolithic porous carbonaceous adsorbent structure.
  • a self-supporting monolithic porous carbonaceous adsorbent structure comprising a free-standing monolith of carbon particles having a specific surface area of 800 m 2 /g or more.
  • organic latex binder allows binding of the precursor particles at low temperature, thus the process is cost effective because little or no heat is required at the binding stage, and the process is environmentally friendly because no decomposition occurs during binding which means that there is little or no generation of harmful and corrosive chemicals during binding.
  • the organic latex binder which is polymeric, is also carbonized during carbonization/pyrolysis to produce porous carbon. Further, organic latex binder forms a thin layer of continuous film binding the precursor particles into a single piece, thus the mechanical strength of the adsorbent structure is enhanced both before and after carbonization/pyrolysis.
  • gas flow channels throughout the adsorbent structure are formed naturally by gases formed during carbonization.
  • the gas flow channels start from active sites in micropores within the adsorbent structure and lead to a surface of the adsorbent structure. Voids between carbon particles are integrated into the channels. Therefore, the gas flow channels ensure that air has access to active adsorbing sites within the monolithic porous carbonaceous adsorbent structure, especially when used for respiratory protection.
  • the process comprises a single carbonization step producing a self-supporting adsorbent structure with desired shape.
  • the adsorbent structure is formed before carbonization, so both the precursor particles and the latex binder are carbonized during the same pyrolysis process.
  • the adsorbent structure forming process is simplified. There is little or no binder blocking pores or active adsorption sites.
  • the adsorbent structure can be loaded into an air purification device without compression avoiding crushing of carbon particles during fabrication of the air purification device (e.g. a respirator). Ergonomic shapes or designs of adsorbent structures can be practically attained.
  • the binding step can be performed without the addition of any heat if speed is not essential.
  • the present process produces a self-supporting monolithic porous carbonaceous adsorbent structure of any desired shape useful for air purification, especially for respiratory protective applications.
  • the adsorbent structure may be one integral piece that does not need compression to maintain the structure's integrity.
  • the process is energy efficient and environment friendly.
  • the process involves a pyrolysis/carbonizing step that creates efficient tortuous gas flow path in the whole monolith, low breathing resistance (pressure drop), and strong mechanical strength of the adsorbent structure.
  • Fig. 1 depicts a flow diagram illustrating steps in one embodiment of a process for producing a self-supporting monolithic porous carbonaceous adsorbent bed in accordance with the present invention
  • Fig. 2 depicts a a solid monolith of polymeric carbon precursor particles bound by an organic polymer matrix, where the organic polymer matrix is best seen in exploded area A;
  • Fig. 3 depicts a self-supporting monolithic porous carbonaceous adsorbent bed comprising gas flow channels therein, the carbonaceous adsorbent bed having maintained the same shape after carbonization as the monolith of Fig. 2 had before carbonization;
  • Fig. 4 depicts air flow in the adsorbent bed of Fig. 3 where air flows between and through carbon particles formed from carbonization of the polymeric precursor particles;
  • Fig. 5 depicts a graph of equivalent flow rate (SLPM) vs. pressure drop (mml-bO/cm) for a self-supporting monolithic porous carbonaceous adsorbent bed of the present invention compared to a porous carbonaceous adsorbent bed having carbon particles not bound by an organic latex binder.
  • FIG. 1 One embodiment of a process for producing a self-supporting monolithic porous carbonaceous adsorbent bed is depicted in Fig. 1.
  • type and size distribution of the polymeric carbon precursor particles are selected.
  • the size distribution of the precursor particles is particularly important for providing a good balance between adsorption capacity of the carbon and pressure drop across the adsorbent bed. This balance is a result of a balance between accessible particle surface area and void size between particles. Larger voids provides for lower pressure drop and faster air flow through the bed at the expense of adsorption capacity. Smaller particles provide for larger accessible surface area and better adsorption capacity at the expense of faster air flow and lower pressure drop. Low breathing resistance is enhanced by a properly chosen particle size distribution and resulting packing of the precursor particles.
  • the particle size distribution is preferably in a range of about 10-30 mesh US sieve size, which is equivalent to average particle diameters in a range of about 0.595-2.00 mm.
  • a mixture of particles having different particle sizes within the range is preferred.
  • the precursor particles are preferably beads or granules or a mixture thereof.
  • the precursor particles have low aspect ratios, where aspect ratio is a ratio of a longest dimension (e.g. length) to a shortest dimension (e.g. width) of the particle.
  • Aspect ratios of about 1 :2 or less, or about 1 :1.5 or less, or about 1 :1.25 or less are preferred.
  • An aspect ratio of about 1 :1 is most preferred.
  • the carbon precursor particles comprise an organic polymer that forms porous carbon when carbonized.
  • the carbon precursor particles preferably yield when carbonized micropores having diameters of about 2 nm or less and mesopores having diameters of about 2-50 nm. The relative yield of these pores is dependent on the carbonization conditions and the presence of any promoting agents.
  • the porous carbon derived from these precursor particles has a specific surface area greater than about 800 m 2 /g, which arises mainly from the micropores. The high specific surface area is desirable because higher surface area leads to greater efficiency of air purification as toxic gases and other pollutants have more surface area on which to adhere.
  • the carbon precursor particles may be synthetic or from a natural source.
  • organic polymers include poly(vinylidene chloride) (PVDC), PVDC copolymer, polystyrene (PS), PS copolymer, phenolic resin, cellulosic polymer (e.g. cellulose) or any mixture thereof.
  • PVDC poly(vinylidene chloride)
  • PS polystyrene
  • PS PS copolymer
  • phenolic resin cellulosic polymer
  • cellulosic polymer e.g. cellulose
  • PVDC poly(vinylidene chloride)
  • the use of a non-gelling polymeric carbon precursor is of particular note as gelling can occlude channels in the adsorbent bed thereby reducing effective surface area and reducing air permeability resulting in high breathing resistance and/or pressure drop in the adsorbent bed.
  • a latex is a stable dispersion (e.g. emulsion) of polymer microparticles in an aqueous medium.
  • a latex binder is selected and used to coat the precursor particles by mixing the latex with the precursor particles.
  • the polymer in the latex binds the precursor particles together in a polymer matrix once the coated precursor particles are dried.
  • the polymer in the latex preferably comprises a synthetic organic polymer.
  • the latex polymer is also chosen to form porous carbon upon carbonization.
  • Latex polymers may comprise, for example, poly(vinylidene chloride) (PVDC) latex which is an emulsion of PVDC and/or PVDC copolymer in aqueous medium, polystyrene (PS) latex which is an emulsion of PS and/or PS copolymer in aqueous medium, or mixtures thereof.
  • PVDC poly(vinylidene chloride)
  • PS polystyrene
  • Solid content of the latex should be properly selected to provide sufficient polymer binder to effectively coat the precursor particles so that a monolith of sufficient structural integrity is formed upon drying, and so that the monolithic porous carbonaceous adsorbent bed formed after carbonization is self-supporting, while minimizing the amount of water that would need to be evaporated during drying.
  • the solid content of the latex is preferably in a range of about 15-65% by weight of the latex, more preferably about 40-55% by weight. Relative amount of precursor particles and latex also contributes to forming monoliths of sufficient structural integrity.
  • the precursor particles are preferably coated with latex in a latex to precursor ratio in a range of about 1 :4 to 1 :20 by weight, more preferably about 1 :4 to 1 :6 by weight, where the weight of the latex includes the weight of the polymer binder and the water in the latex.
  • the mixture of latex-coated precursor particles is molded into a desired shape, preferably in a mold.
  • the presence of water in the latex provides a relatively fluid mixture so that that the latex-coated precursor particles may be poured and shaped in the mold.
  • the molded latex-coated precursor particles are dried, preferably in the mold. Drying is performed at a temperature of about 100°C or less, no higher than the boiling point of water. Drying may be performed at a temperature of 90°C or less, 80°C or less, 70°C or less, 60°C or less, 50°C or less, 40°C or less, or 30°C or less. Drying may be performed at ambient temperature or higher, for example 20°C or higher, or 25°C or higher. Drying temperatures at the lower end require less energy input but result in longer drying times.
  • the latex polymer binds the precursor particles together at a low temperature in a range of from about ambient temperature to about 100°C.
  • the latex polymer has a melting point greater than the drying temperature, for example greater than about 100°C, so that the latex polymer remains substantially in the solid state to reduce the chance of melted polymer flowing away from the precursor particles leaving the precursor particles uncoated with binder. Further, within this temperature range there is little or no decomposition of either the precursor particles or the latex polymer. In the case of PVDC-based precursor particles and/or PVDC-containing latex, if decomposition were to occur during binding of the precursor particles, hydrogen chloride (HCI) gas would be produced, which would cause a number of problems. Further, since the latex is an aqueous dispersion, the binding step comprises evaporation of water rather than softening of dry polymer.
  • HCI hydrogen chloride
  • an adsorbent bed 1 comprising a solid monolith of polymeric carbon precursor particles 5 (two labeled) bound by an organic polymer matrix 7 is demolded.
  • the demolded solid monolith 1 of desired shape is pyrolyzed to carbonize the now dry precursor particles and latex polymer. Both the precursor particles and the latex polymer are carbonized to form porous carbon.
  • the porous carbon created by carbonization of the latex polymer preferably has a specific surface area of no less than about 800 m 2 /g.
  • Carbonizing the solid monolith is performed at a temperature of 800°C or less to form a self- supporting monolithic porous carbonaceous adsorbent bed.
  • the carbonization is preferably performed under a controlled stepwise temperature profile. Carbonization is preferably performed slowly, with a number of temperature plateaus and a slow ramp rate between temperature plateaus.
  • time and ramp rate for each step are generally different for samples with different sizes and/or weights, but sample size and/or weight is not necessarily proportional to time and ramp rate.
  • temperature plateaus may be at about 180°C, 200°C, 350°C and 700°C with ramp rates in a range of about 0.2-3°C/minute. Temperature plateaus at about 200°C and about 700°C are particularly useful for obtaining good results. Soaking times at a given temperature plateau may vary, for example soaking times may be in a range of from about 0.5 hours to about 4 hours.
  • a monolith 20 mm in diameter and 40 mm in length may be carbonized using the following temperature profile:
  • Carbonization is preferably performed in an inert atmosphere, e.g. under Ar or 2 or in vacuo, to reduce oxidation of carbon, for example to reduce oxidation of carbon to carbon dioxide and/or carbon monoxide.
  • an inert atmosphere e.g. under Ar or 2 or in vacuo
  • the solid monolith may be carbonized without the need for a container thereby permitting process gases to flow through and around the monolith during carbonization resulting in a more homogeneous product.
  • HCI hydrogen chloride
  • a self-supporting monolithic porous carbonaceous adsorbent bed 10 produced after carbonization is a whole piece and is ready to be assembled into an air purification device, such as a respirator. Because the adsorbent bed is self-supporting, respirator design is simplified and more rugged. Gas evolution during carbonization encourages formation of tortuous gas flow paths 15 (one labeled) from one end of the adsorbent bed 10 to the other end. The tortuous gas flow paths 15 become air flow paths through which air may flow after the monolith is carbonized. The air flow paths are the paths through which air flows in the adsorbent bed during an air filtering application such as in a respirator.
  • the created gas flow paths 15 ensure efficient adsorbing interaction by directing the air to microporous adsorbing sites in or on carbon particles 20 (two labeled).
  • the carbon particles 20 are formed from carbonization of the polymeric precursor particles. Adsorbing sites arise from the micropores in the precursor particles or on the surfaces of carbon particles formed by carbonization of the latex polymer. As seen in Fig. 4, air (depicted by arrows) may flow between the carbon particles 20 (only one labeled) formed from carbonization of the polymeric precursor particles or through internal channels 21 (only one labeled) in the carbon particles 20.
  • the adsorbent structure preferably comprises carbon particles having a specific surface area of 800 m 2 /g or more.
  • Performance of a self-supporting monolithic porous carbonaceous adsorbent bed of the present invention was compared to performance of a prior art carbonaceous adsorbent bed.
  • the prior art bed was formed with carbon particles of similar particle size distribution as those in the bed of the present invention, but the carbon particles were not bound together with an organic latex binder.
  • the size distribution of the carbon particles is given in Table 1.
  • Fig. 5 depicts a graph of equivalent flow rate (SLPM) vs. pressure drop (mml-bO/cm) illustrating the results.
  • the results clearly show that the pressure drop is significantly reduced in an adsorbent bed of the present invention in comparison to the prior art bed, especially at a high flow rate.
  • the pressure drop may be reduced by up to 75%.
  • Gadkaree KP Johnson TV. (1998) Device for removal of contaminants from fluid streams.
  • U.S. Patent 5,750,026 issued May 12, 1998.
  • Gadkaree KP Gadkaree KP, Tao T. (2001 )
  • Mercury removal catalyst and method of making and using same.
  • U.S. Patent 6,258,334 issued July 10, 2001.
  • Gadkaree KP He L, Shi Y. (2010) Activated carbon honeycomb catalyst beds and methods for the use thereof.
  • U.S. Patent 7,722,705 issued May 25, 2010.

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  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

La présente invention concerne un procédé de préparation d'une structure adsorbante carbonée poreuse monolithique autoportante consistant à : sécher un mélange de particules de précurseur de carbone polymère et d'un liant latex organique à une température inférieure ou égale à 100 °C afin de former un monolithe solide des particules de précurseur de carbone polymère liées par une matrice polymère organique ayant une forme prédéfinie. Le monolithe solide ayant une forme prédéfinie est carbonisé à une température inférieure ou égale à 800 °C afin de former une structure adsorbante carbonée poreuse monolithique autoportante. La structure adsorbante carbonée poreuse monolithique autoportante produite grâce au procédé présente une voie d'écoulement de gaz tortueuse efficace dans l'ensemble du monolithe, une faible résistance respiratoire (chute de pression), et une forte résistance mécanique de la structure adsorbante.
PCT/CA2014/000041 2014-01-21 2014-01-21 Monolithe de carbone et son procédé de production WO2015109381A1 (fr)

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Application Number Priority Date Filing Date Title
PCT/CA2014/000041 WO2015109381A1 (fr) 2014-01-21 2014-01-21 Monolithe de carbone et son procédé de production
PCT/CA2014/050565 WO2015109385A1 (fr) 2014-01-21 2014-06-17 Monolithe de carbone, monolithe de carbone comprenant une substance métallique d'imprégnation, et leur procédé de production

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Application Number Priority Date Filing Date Title
PCT/CA2014/000041 WO2015109381A1 (fr) 2014-01-21 2014-01-21 Monolithe de carbone et son procédé de production

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PCT/CA2014/050565 WO2015109385A1 (fr) 2014-01-21 2014-06-17 Monolithe de carbone, monolithe de carbone comprenant une substance métallique d'imprégnation, et leur procédé de production

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018091630A1 (fr) 2016-11-17 2018-05-24 Solvay Sa Adsorbants de carbone poreux perfectionnés pour capture et séparation de co2
WO2018099739A1 (fr) 2016-11-30 2018-06-07 Solvay Sa Matières carbonées poreuses avancées et leurs procédés de préparation
WO2018213890A1 (fr) * 2017-05-26 2018-11-29 Monash University Monolithes de carbone et leur processus de production
WO2019025544A1 (fr) 2017-08-02 2019-02-07 Solvay Sa Procédé de formation d'un corps façonné carboné adsorbant et corps cru façonné et corps carbonés adsorbants obtenus à partir de celui-ci

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6207264B1 (en) * 1996-02-13 2001-03-27 Mega-Carbon Company Monolithic activated carbon
US7160366B2 (en) * 2001-07-16 2007-01-09 Mast Carbon International Ltd. Filter element
CA2651940A1 (fr) * 2006-05-11 2007-11-22 Corning Incorporated Lits catalytiques en nids d'abeilles a charbon actif et procedes de fabrication associes

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US8615812B2 (en) * 2009-03-31 2013-12-31 Advanced Fuel Research, Inc. High-strength porous carbon and its multifunctional applications

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6207264B1 (en) * 1996-02-13 2001-03-27 Mega-Carbon Company Monolithic activated carbon
US7160366B2 (en) * 2001-07-16 2007-01-09 Mast Carbon International Ltd. Filter element
CA2651940A1 (fr) * 2006-05-11 2007-11-22 Corning Incorporated Lits catalytiques en nids d'abeilles a charbon actif et procedes de fabrication associes

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018091630A1 (fr) 2016-11-17 2018-05-24 Solvay Sa Adsorbants de carbone poreux perfectionnés pour capture et séparation de co2
JP2019536620A (ja) * 2016-11-17 2019-12-19 ソルヴェイ（ソシエテ アノニム） Ｃｏ２捕獲および分離のための進歩した多孔性炭素吸着剤
JP6994032B2 (ja) 2016-11-17 2022-01-14 ソルヴェイ（ソシエテ アノニム） Ｃｏ２捕獲および分離のための進歩した多孔性炭素吸着剤
US11439976B2 (en) 2016-11-17 2022-09-13 Solvay Sa Advanced porous carbon adsorbents for CO2 capture and separation
WO2018099739A1 (fr) 2016-11-30 2018-06-07 Solvay Sa Matières carbonées poreuses avancées et leurs procédés de préparation
US11471856B2 (en) 2016-11-30 2022-10-18 Solvay Sa Advanced porous carbonaceous materials and methods to prepare them
WO2018213890A1 (fr) * 2017-05-26 2018-11-29 Monash University Monolithes de carbone et leur processus de production
CN112236226A (zh) * 2017-05-26 2021-01-15 莫纳什大学 碳块体及其制备方法
WO2019025544A1 (fr) 2017-08-02 2019-02-07 Solvay Sa Procédé de formation d'un corps façonné carboné adsorbant et corps cru façonné et corps carbonés adsorbants obtenus à partir de celui-ci

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