公开(公告)号：US20180162788A1

公开(公告)日：2018-06-14

申请号：US15839959

申请日：2017-12-13

Applicant: ExxonMobil Research and Engineering Company

Inventor： Jihad M. Dakka ,  David B. Spry ,  Cynthia F. Omilian ,  Matthew S. Ide ,  Jenna L. Walp ,  Ralph C. Dehaas

IPC: C07C2/86 ,  C07C2/62 ,  C07C31/12 ,  C07C29/50

Abstract: Systems and methods are provided for forming alkylate from a tertiary alcohol feed. Olefins for the alkylation reaction can be generated from a portion of the tertiary alcohol feed. The tertiary alcohol feed can be obtained, for example, by selective oxidation to convert a portion of an isoparaffin-containing feed into alcohol, such as conversion of isobutane to t-butyl alcohol. The alcohol can then be converted to an alkene, such as conversion of t-butyl alcohol to isobutene, in the alkylation reaction environment in the presence of a solid acid catalyst. The solid acid catalyst can then facilitate dimerization of the alkenes (e.g. isobutene) to form C8+ olefins (e.g. isooctene). A catalyst having an MWW framework is an example of a suitable solid acid catalyst.

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：US10421699B2

公开(公告)日：2019-09-24

申请号：US15839959

申请日：2017-12-13

Applicant: ExxonMobil Research and Engineering Company

Inventor： Jihad M. Dakka ,  David B. Spry ,  Cynthia F. Omilian ,  Matthew S. Ide ,  Jenna L. Walp ,  Ralph C. Dehaas

IPC: C07C2/86 ,  C07C2/02 ,  C07C1/24 ,  C07C2/12 ,  C07C2/62 ,  C07C31/12 ,  C07C31/125 ,  C07C29/50 ,  B01J29/70 ,  C07C5/02 ,  C07C29/132 ,  C07C5/03 ,  C07C5/27 ,  C07C407/00 ,  C10G45/58 ,  C10G50/00 ,  C10G69/12 ,  C10G3/00 ,  B01J29/80 ,  B01J29/50

Abstract: Systems and methods are provided for forming alkylate from a tertiary alcohol feed. Olefins for the alkylation reaction can be generated from a portion of the tertiary alcohol feed. The tertiary alcohol feed can be obtained, for example, by selective oxidation to convert a portion of an isoparaffin-containing feed into alcohol, such as conversion of isobutane to t-butyl alcohol. The alcohol can then be converted to an alkene, such as conversion of t-butyl alcohol to isobutene, in the alkylation reaction environment in the presence of a solid acid catalyst. The solid acid catalyst can then facilitate dimerization of the alkenes (e.g. isobutene) to form C8+ olefins (e.g. isooctene). A catalyst having an MWW framework is an example of a suitable solid acid catalyst.

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.