公开(公告)号：US20210046462A1

公开(公告)日：2021-02-18

申请号：US16993219

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 ,  B01J21/04 ,  B01J29/46 ,  B01J27/188 ,  B01J27/19 ,  B01J35/02 ,  B01J35/10 ,  B01J37/04 ,  B01J37/08 ,  B01J37/10 ,  B01J37/00 ,  B01J37/18 ,  C07C41/01

Abstract: A method of producing a acid/metal bifunctional catalyst may include: mixing an acid catalyst, a metal catalyst, and a fluid to produce a slurry, wherein the acid catalyst is present at 50 wt % or less relative to a total catalyst weight in the slurry; heating the slurry; producing a powder from the slurry; and calcining the powder to produce the acid/metal bifunctional catalyst. Such acid/metal bifunctional catalyst would be useful in the direct conversion of syngas to dimethyl ether as well as other reactions.

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：US20210046464A1

公开(公告)日：2021-02-18

申请号：US16947704

申请日：2020-08-13

Applicant: ExxonMobil Research and Engineering Company

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

IPC: B01J29/46 ,  B01J23/80 ,  B01J37/04 ,  B01J37/00 ,  B01J37/08 ,  B01J37/10 ,  B01J35/02 ,  B01J35/00 ,  C07C41/01

Abstract: A method of producing bifunctional catalysts by extrusion may include mixing an acid catalyst, a metal catalyst, optionally a binder, and a fluid to produce a dough; extruding the dough to form an extrudate; producing a powder from the extrudate; and calcining the powder to produce an acid/metal bifunctional catalyst. Such acid/metal bifunctional catalysts may be useful in, among other things, converting syngas to dimethyl ether in a single reactor.

公开(公告)号：US20210046470A1

公开(公告)日：2021-02-18

申请号：US16947706

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: B01J37/08 ,  B01J37/02 ,  B01J37/04 ,  B01J23/80 ,  B01J33/00 ,  B01J21/18 ,  B01J29/40 ,  B01J37/10 ,  C07C41/01

Abstract: A method of producing bifunctional catalyst systems that include a carbon-coated metal catalyst may comprise: coating a metal catalyst particle with a carbon-containing small molecule to produce a coated metal catalyst particle; carbonizing the carbon-containing small molecule on the coated metal catalyst particle to produce a carbon-coated metal catalyst particle; and mixing the carbon-coated metal catalyst particle with an acid catalyst particle to produce an acid/metal bifunctional catalyst system. Further, a method of producing bifunctional catalyst systems that include a carbon-coated acid catalyst may be similarly performed by coating a metal catalyst particle with a carbon-containing small molecule to produce a coated metal catalyst particle; carbonizing the carbon-containing small molecule on the coated metal catalyst particle to produce a carbon-coated metal catalyst particle; and mixing the carbon-coated metal catalyst particle with an acid catalyst particle to produce an acid/metal bifunctional catalyst system.

公开(公告)号：US20210046460A1

公开(公告)日：2021-02-18

申请号：US16947699

申请日：2020-08-13

Applicant: ExxonMobil Research and Engineering Company

Inventor： Chuansheng Bai ,  Majosefina Cunningham ,  Jihad M. Daaka ,  Preeti Kamakoti ,  Aruna Ramkrishnan

IPC: B01J23/80 ,  B01J37/04 ,  B01J37/03 ,  B01J37/08 ,  B01J37/06 ,  B01J37/02 ,  B01J37/00 ,  B01J37/18 ,  B01J35/02 ,  B01J35/00 ,  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 having a pH of about 2.5 to about 4.0; mixing the metal catalyst precursor solution and a basic solution having a pH of about 10 to about 13 to produce a mixture with a pH of about 6 to about 7 and a precipitate; producing a powder from the 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.