公开(公告)号：US11180374B2

公开(公告)日：2021-11-23

申请号：US16078470

申请日：2016-12-07

申请人： TOHOKU TECHNO ARCH CO., LTD.

发明人： Hidemi Kato ,  Masashi Tsuda ,  Yugo Takano ,  Yosuke Suzuki ,  Tsutomu Chino ,  Koji Kamata ,  Shota Muronaka

IPC分类号： C01B31/08 ,  C01B32/348 ,  C22C1/10 ,  C22C32/00 ,  C01B32/30 ,  C01B32/306

摘要： A novel method for producing a porous carbon material which makes it possible to easily produce a porous carbon material having a desired shape; and a spherical porous carbon material are provided. The method includes immersing a carbon-containing material having a desired shape and composed of a compound, alloy or non-equilibrium alloy containing carbon in a metal bath, the metal bath having a solidification point that is lower than a melting point of the carbon-containing material, the metal bath being controlled to a lower temperature than a minimum value of a liquidus temperature within a compositional fluctuation range extending from the carbon-containing material to carbon by decreasing the other non-carbon main components, to thereby selectively elute the other non-carbon main components into the metal bath while maintaining an external shape of the carbon-containing material to give a porous carbon material having microvoids.

公开(公告)号：US10646849B2

公开(公告)日：2020-05-12

申请号：US15764633

申请日：2016-09-08

申请人： Dow Global Technologies LLC

发明人： Junqiang Liu ,  Chan Han ,  Janet M. Goss ,  Edward M. Calverley

IPC分类号： B01J20/20 ,  B01J20/30 ,  B01J20/32 ,  B01J20/28 ,  C01B32/306 ,  C01B32/05 ,  B01D53/04 ,  B01D53/047 ,  B01D53/02

摘要： A process to prepare a carbon molecular sieve adsorbent composition comprises steps beginning with an activated carbon having specific effective micropore size. The activated carbon is impregnated with monomers or partially polymerized polymer, allowed to complete polymerization, and then carbonized such that the impregnant shrinks the micropores to another specific effective micropore size. Finally, the impregnated/polymerized/carbonized product is annealed at a temperature ranging from 1000° C. to 1500° C., which ultimately and predictably shrinks the micropores to a size ranging from 4.0 Angstroms to 4.3 Angstroms. The invention surprisingly enables fine tuning of the effective micropore size, as well as desirable selectivity, capacity and adsorption rates, to obtain highly desirable carbon molecular sieving capability particularly suited for use in, for example, fixed beds in pressure swing or temperature swing processes to enable propylene/propane separations.

公开(公告)号：US09987614B2

公开(公告)日：2018-06-05

申请号：US15029501

申请日：2014-10-15

申请人： ROQUETTE ITALIA S.P.A.

发明人： Francesco Trotta ,  Fabrizio Caldera ,  Marco Zanetti ,  Anastasia Anceschi ,  Giuliana Magnacca

IPC分类号： C01B31/02 ,  B01J20/20 ,  C08B31/00 ,  C08B37/16 ,  B01D53/04 ,  B01J20/30 ,  C02F1/28 ,  C01B32/306 ,  C02F101/10

CPC分类号： B01J20/20 ,  B01D53/04 ,  B01D2253/102 ,  B01D2257/504 ,  B01J20/3078 ,  C01B32/306 ,  C02F1/283 ,  C02F2101/103 ,  C08B31/003 ,  C08B37/0012

摘要： The invention relates a process for preparing a microporous carbon material comprising the following steps: i) providing a cross-linked polymer obtainable by reacting either A1) a maltodextrin deriving from starch comprising amylose in the range from 25 to 50% expressed as dry weight relative to the dry weight of the starch or A2) a cyclodextrin with an organic aromatic dianhydride in a mass ratio of either maltodextrin or cyclodextrin with respect to the organic aromatic dianhydride in the range of 1:0.50 to 1:2, ii) pyrolyzing at a range from 700 to 900° C. with a heating ramp in the range from 5° C./min to 30° C./min in a inert gas flux; and iii) cooling the obtained residue. The microporous carbon material obtainable by the process of the invention consists of micropores having pore size distribution in the range from about 6 to about 16 Å and is used as absorber for liquids and gases.

公开(公告)号：US09914110B2

公开(公告)日：2018-03-13

申请号：US14775781

申请日：2014-03-13

申请人： EVOQUA WATER TECHNOLOGIES LLC

发明人： Adam M. Redding

IPC分类号： B01J20/20 ,  B01J20/32 ,  B01J20/34 ,  B01J20/28 ,  B01J20/30 ,  G01N15/08 ,  C01B32/30 ,  C01B32/354 ,  C01B32/306 ,  C01B32/348 ,  C02F1/28 ,  C02F101/36

CPC分类号： B01J20/20 ,  B01J20/28011 ,  B01J20/28083 ,  B01J20/3078 ,  B01J20/3204 ,  B01J20/3236 ,  B01J20/3416 ,  B01J20/3475 ,  B01J2220/485 ,  B01J2220/4881 ,  C01B32/30 ,  C01B32/306 ,  C01B32/348 ,  C01B32/354 ,  C01P2006/16 ,  C02F1/283 ,  C02F2101/36 ,  G01N15/088 ,  G01N2015/0866

摘要： Mesoporous activated carbon having a mesopore structure of at least about 10%. In at least some embodiments, the activated carbon may be coconut shell-based. The enhanced activated carbon may have an intraparticle diffusion constant of at least about 40 mg/g/hr1/2.