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.

公开(公告)号：US10919830B2

公开(公告)日：2021-02-16

申请号：US16738624

申请日：2020-01-09

Applicant: ExxonMobil Research and Engineering Company

Inventor： Jihad M. Dakka ,  Michael J. Sikorsky ,  Aruna Ramkrishnan ,  Chuansheng Bai ,  Anita S. Lee ,  Preeti Kamakoti ,  Anjaneya S. Kovvali ,  Jenna L. Walp

IPC: C07C41/09 ,  C07C29/00 ,  C07C31/00 ,  C07C43/00 ,  B01J8/00 ,  B01J8/02 ,  C07C29/153 ,  B01J20/02 ,  B01J21/04 ,  B01J23/80 ,  C07C31/04 ,  C07C43/04

Abstract: Systems and methods are provided for conversion of gas phase reactants including CO and H2 to C2+ products using multiple catalysts in a single reactor while reducing or minimizing deactivation of the catalysts. Separate catalysts can be used that correspond to a first catalyst, such as a catalyst for synthesis of methanol from synthesis gas, and a second catalyst, such as a catalyst for conversion of methanol to a desired C2+ product. The separate catalysts can be loaded into the reactor in distinct layers that are separated by spacer layers. The spacer layers can correspond to relatively inert particles, such as silica particles. Optionally, the spacer layer can include an adsorbent, such as boron supported on alumina or boron carbide particles. The adsorbent can be suitable for selective adsorption of the one or more reaction products (such as one or more reaction by-products), to allow for further reduction or minimization of the deactivation of the conversion catalysts.

公开(公告)号：US10661262B2

公开(公告)日：2020-05-26

申请号：US16031449

申请日：2018-07-10

Applicant: ExxonMobil Research and Engineering Company

Inventor： Paul Podsiadlo ,  Quanchang Li ,  David Charles Calabro ,  Jean Willem Lodewijk Beeckman ,  Lei Zhang ,  Kiara M. Benitez ,  Matthew Scott Ide ,  Stephen John McCarthy ,  Mobae Afeworki ,  Simon Christopher Weston ,  Preeti Kamakoti ,  Matu J. Shah ,  Wenyih Frank Lai ,  Meghan Kochersperger ,  David A. Griffin ,  Ivy D. Johnson

IPC: B01J37/02 ,  B01D15/00 ,  C01B37/00 ,  C08F2/10 ,  C08G77/60 ,  C10G25/00 ,  C10G45/44 ,  C07F7/08 ,  C10G45/46 ,  C01B39/00 ,  B01J37/03 ,  B01J23/42 ,  B01J31/12 ,  B01J37/04 ,  B01J23/44 ,  B01J31/02 ,  B01J35/10 ,  C10G45/52 ,  C10M101/02 ,  B01J20/06 ,  B01J20/08 ,  B01J20/10 ,  B01J20/26 ,  B01J20/28 ,  B01J20/286 ,  B01J20/30 ,  B01J20/32 ,  B01J20/22

Abstract: Hydrogenation catalysts for aromatic hydrogenation including an organosilica material support, which is a polymer comprising independent units of a monomer of Formula [Z1OZ2OSiCH2]3 (I), wherein each Z1 and Z2 independently represent a hydrogen atom, a C1-C4 alkyl group or a bond to a silicon atom of another monomer; and at least one catalyst metal are provided herein. Methods of making the hydrogenation catalysts and processes of using, e.g., aromatic hydrogenation, the hydrogenation catalyst are also provided herein.

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：US20200231525A1

公开(公告)日：2020-07-23

申请号：US16738624

申请日：2020-01-09

Applicant: ExxonMobil Research and Engineering Company

Inventor： Jihad M. Dakka ,  Michael J. Sikorsky ,  Aruna Ramkrishnan ,  Chuansheng Bai ,  Anita S. Lee ,  Preeti Kamakoti ,  Anjaneya S. Kovvali ,  Jenna L. Walp

IPC: C07C41/09 ,  B01J8/02 ,  B01J8/00 ,  C07C29/153

Abstract: Systems and methods are provided for conversion of gas phase reactants including CO and H2 to C2+ products using multiple catalysts in a single reactor while reducing or minimizing deactivation of the catalysts. Separate catalysts can be used that correspond to a first catalyst, such as a catalyst for synthesis of methanol from synthesis gas, and a second catalyst, such as a catalyst for conversion of methanol to a desired C2+ product. The separate catalysts can be loaded into the reactor in distinct layers that are separated by spacer layers. The spacer layers can correspond to relatively inert particles, such as silica particles. Optionally, the spacer layer can include an adsorbent, such as boron supported on alumina or boron carbide particles. The adsorbent can be suitable for selective adsorption of the one or more reaction products (such as one or more reaction by-products), to allow for further reduction or minimization of the deactivation of the conversion catalysts.

公开(公告)号：US20200061593A1

公开(公告)日：2020-02-27

申请号：US16545464

申请日：2019-08-20

Applicant: ExxonMobil Research and Engineering Company

Inventor： Preeti Kamakoti ,  Scott J. Weigel ,  Karl G. Strohmaier ,  Helge Jaensch ,  Marc H. Anthonis ,  Martine Dictus ,  Brita Engels ,  Darryl D. Lacy ,  Sina Sartipi ,  Brandon J. O'Neill

IPC: B01J29/40 ,  B01J29/78 ,  B01J29/70 ,  C10G35/095 ,  B01J29/08 ,  B01J37/08 ,  B01J35/10 ,  C10G3/00

Abstract: Processes are provided for preparing molecular sieves of framework structure MEI, TON, MRE, MWW, MFS, MOR, FAU, EMT, or MSE. The process involves preparing a synthesis mixture for the molecular sieve wherein the synthesis mixture includes a morphology modifier L selected from the group consisting of cationic surfactants having a quaternary ammonium group comprising at least one hydrocarbyl group having at least 12 carbon atoms, nonionic surfactants, anionic surfactants, sugars and combinations thereof.

公开(公告)号：US10160708B2

公开(公告)日：2018-12-25

申请号：US15455181

申请日：2017-03-10

Applicant: ExxonMobil Research and Engineering Company

Inventor： Anita S. Lee ,  Jihad M. Dakka ,  Arun K. Sharma ,  Michel Daage ,  Preeti Kamakoti ,  Ronald Suryo ,  Chuansheng Bai ,  J. Timothy Cullinane

IPC: C07C41/09 ,  C07C41/01 ,  C01B3/34 ,  C07C29/151

Abstract: Integrated methods and systems are disclosed for the production of dimethyl ether. The method may include reforming natural gas to syngas in a first reactor; contacting the syngas produced in the first reactor with a catalyst system in a second reactor to produce dimethyl ether and carbon dioxide; and supplying steam as a cofeed to at least one of the first reactor and the second reactor in an amount sufficient to achieve a Mm value of 1.4 to 1.8 or to improve the hydrocarbon or oxygenate selectivity.