公开(公告)号：US20210046461A1

公开(公告)日：2021-02-18

申请号：US16947701

申请日：2020-08-13

Applicant: ExxonMobil Research and Engineering Company

Inventor： Chuansheng Bai ,  Majosefina Cunningham ,  Jihad M. Daaka ,  Preeti Kamakoti ,  Aruna Ramkrishnan ,  Anjaneya S. Kovvali ,  Anita S. Lee

IPC: B01J23/80 ,  B01J21/18 ,  B01J37/04 ,  B01J37/03 ,  B01J37/30 ,  B01J37/00 ,  B01J37/08 ,  B01J37/34 ,  B01J37/06 ,  B01J37/02 ,  B01J37/18 ,  B01J35/00 ,  B01J35/02 ,  B01J35/10 ,  C07C41/01

Abstract: Methods of producing metal catalysts can include mixing two or more metal salts and an aluminum salt in water to produce a metal catalyst precursor solution; mixing the metal catalyst precursor solution and an alkali metal buffer solution to produce a precipitate; ion exchanging the alkali metal in the precipitate for a non-alkali cation to produce a low-alkali metal precipitate comprising 3 wt % or less alkali metal by weight of the precipitate on a dry basis; producing a powder from the low-alkali metal precipitate; and calcining the powder to produce a metal catalyst. Such metal catalysts may be useful in producing bifunctional catalyst systems that are useful in, among other things, converting syngas to dimethyl ether in a single reactor

公开(公告)号：US20180250654A1

公开(公告)日：2018-09-06

申请号：US15910257

申请日：2018-03-02

Applicant: ExxonMobil Research and Engineering Company ,  TDA Research, Inc.

Inventor： Chuansheng Bai ,  Majosefina Cunningham ,  Patrick P. McCall ,  Hans Thomann ,  Jeannine Elizabeth Elliott ,  Vinh Nguyen

IPC: B01J20/04 ,  B01J20/08 ,  B01J20/30 ,  B01J20/32 ,  B01J20/34 ,  B01D53/02

CPC classification number: B01J20/041 ,  B01D53/02 ,  B01D53/0462 ,  B01D2253/1124 ,  B01D2253/25 ,  B01D2257/504 ,  B01D2259/40083 ,  B01D2259/4009 ,  B01J20/08 ,  B01J20/3007 ,  B01J20/3078 ,  B01J20/3204 ,  B01J20/3236 ,  B01J20/3433 ,  B01J20/3466

Abstract: The disclosure generally relates to CCS sorbents, particularly for CO2/H2O displacement desorption process. The sorbent includes an aluminum oxide support and an alkali metal salt impregnated on the support. The support can be prepared by creating and extruding a dough to create an extrudate, which is then drying and calcined to form the support. Calcination temperatures can be between about 120° C. and 500° C., preferably about 200° C. to about 400° C. The sorbents demonstrate improved CO2 loadings and better H2O/CO2 ratios, as well as improved stability. Compositions and methods of making are disclosed.

公开(公告)号：US20180250653A1

公开(公告)日：2018-09-06

申请号：US15910212

申请日：2018-03-02

Applicant: ExxonMobil Research and Engineering Company ,  TDA Research, Inc.

Inventor： Chuansheng Bai ,  Majosefina Cunningham ,  Patrick P. McCall ,  Hans Thomann ,  Jeannine Elizabeth Elliott ,  Vinh Nguyen

IPC: B01J20/04 ,  B01J20/22 ,  B01J20/10 ,  B01J20/08 ,  B01J20/34 ,  B01J20/32 ,  B01J20/30 ,  B01D53/02

CPC classification number: B01J20/041 ,  B01D53/02 ,  B01D2253/104 ,  B01D2253/106 ,  B01D2253/1124 ,  B01D2253/20 ,  B01D2253/25 ,  B01D2257/504 ,  B01D2258/0283 ,  B01D2259/40086 ,  B01J20/08 ,  B01J20/103 ,  B01J20/22 ,  B01J20/3078 ,  B01J20/3204 ,  B01J20/3234 ,  B01J20/3433 ,  B01J20/3466

Abstract: The disclosure generally relates to CCS sorbents, particularly for CO2/H2O displacement desorption process. The sorbent includes an aluminum oxide support and an alkali metal salt impregnated on the support, and a silicon modification of the sorbent to reduce water uptake by the sorbent and make it more hydrophobic. The silicon modification can be an organosilyl moiety added after the initial sorbent is complete, or a silica source added to the aluminum oxide structure, typically via impregnation. The sorbents demonstrate better H2O/CO2 ratios. Compositions and methods of making are disclosed.