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公开(公告)号：US11827579B2
公开(公告)日：2023-11-28
申请号：US17431745
申请日：2020-03-18
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Seth M. Washburn , Hsu Chiang , Umar Aslam , Wenyih F. Lai , Doron Levin , Tan-Jen Chen
CPC classification number: C07C2/865 , B01J29/70 , B01J29/7088 , C07C2/864 , B01D2255/204 , B01D2255/206 , B01D2255/2061 , B01D2255/2063 , B01D2255/2065 , B01J2523/20 , B01J2523/30 , B01J2523/37 , B01J2523/3706 , B01J2523/3712 , C07C2529/70
Abstract: This disclosure provides improved processes for converting benzene/toluene via methylation with methanol/dimethyl ether for producing, e.g., p-xylene. In an embodiment, a process utilizes a methylation catalyst system comprising a molecular sieve catalyst and an auxiliary catalyst. The auxiliary catalyst comprises a metal element selected from Group 2, Group 3, the lanthanide series, the actinide series, and mixtures and combinations thereof. The auxiliary catalyst may comprise the oxide of the metal element. Deactivation of the molecular sieve catalyst can be reduced with the inclusion of the auxiliary catalyst in the methylation catalyst system.
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公开(公告)号：US20160318828A1
公开(公告)日：2016-11-03
申请号：US15094279
申请日：2016-04-08
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Seth M. Washburn , John S. Coleman , John S. Buchanan , Neeraj Sangar , Paul F. Keusenkothen
IPC: C07C5/333
CPC classification number: C07C5/3335 , B01J8/0285 , B01J2208/00061 , C07C5/333 , C07C5/3337 , C07C2521/04 , C07C2523/26 , C07C2523/42 , C07C11/06
Abstract: The invention relates to catalytic alkane dehydrogenation, to olefin produced by catalytic alkane dehydrogenation, and to processes, compositions, process configurations, equipment, and systems useful for carrying out catalytic alkane dehydrogenation. The catalytic alkane dehydrogenation is carried out in a substantially-isothermal reaction zone, which includes at least one active material having catalytic alkane dehydrogenation activity.
Abstract translation: 本发明涉及催化烷烃脱氢，通过催化烷烃脱氢生产的烯烃，以及用于进行催化烷烃脱氢的方法，组合物，方法构型，设备和系统。 催化烷烃脱氢在基本上等温的反应区中进行，其包括至少一种具有催化烷烃脱氢活性的活性物质。
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公开(公告)号：US20220153660A1
公开(公告)日：2022-05-19
申请号：US17433040
申请日：2020-03-18
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Seth M. Washburn , Hsu Chiang , Tan-Jen Chen
Abstract: This disclosure provides improved processes for converting benzene/toluene via methylation with methanol/dimethyl ether for producing, e.g., p-xylene. In an embodiment, a process comprises contacting a methylation agent feed with an aromatic hydrocarbon feed in the presence of a methylation catalyst in a methylation reactor at increased pressure. Reduced methylation catalyst deactivation can be achieved with increased pressure in the methylation reactor.
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公开(公告)号：US20180208523A1
公开(公告)日：2018-07-26
申请号：US15928142
申请日：2018-03-22
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Paul F. Keusenkothen , Seth M. Washburn , Neeraj Sangar , Nikolaos Soultanidis , Mayank Shekhar
CPC classification number: C07C1/20 , B01J8/0221 , B01J8/0278 , B01J8/0285 , B01J8/06 , B01J8/1863 , B01J8/26 , B01J2208/00309 , C10G3/46 , C10G3/47 , C10G3/49 , C10G2400/30
Abstract: A catalyst system and processes for combined aromatization and selective hydrogen combustion of oxygenated hydrocarbons are disclosed. The catalyst system contains at least one aromatization component and at least one selective hydrogen combustion component. The process is such that the yield of hydrogen is less than the yield of hydrogen when contacting the hydrocarbons with the aromatization component alone.
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公开(公告)号：US20170088491A1
公开(公告)日：2017-03-30
申请号：US15240531
申请日：2016-08-18
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Paul F. Keusenkothen , John S. Buchanan , John S. Coleman , Seth M. Washburn
CPC classification number: B01J8/0285 , B01J8/0278 , B01J2208/00548 , B01J2208/02 , C07C2/76 , C07C2529/40 , C07C2529/65 , C07C2529/70 , C07C2529/80 , C10G11/00 , C07C15/04 , C07C15/06
Abstract: The invention relates to hydrocarbon dehydrocyclization to produce products such as aromatic hydrocarbon, to equipment and materials useful for dehydrocyclization, to processes for carrying out dehydrocyclization, and to the use of dehydrocyclization for, e.g., natural gas upgrading. The dehydrocyclization is carried out in a catalytic reaction zone of a reverse-flow reactor.
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Patent Agency Ranking
公开(公告)号：US11691933B2
公开(公告)日：2023-07-04
申请号：US17431846
申请日：2020-03-18
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Seth M. Washburn , Hsu Chiang , Catherine M. Dorsi , Tan-Jen Chen
CPC classification number: C07C2/865 , B01J8/02 , B01J29/7038 , C07C2/864 , C07C2529/70
Abstract: This disclosure provides an improved process for converting benzene/toluene via methylation with methanol/dimethyl ether for producing, e.g., p-xylene, comprising separating and recycling dimethyl ether from the methylation reaction product mixture effluent to the methylation reactor. High selectivity toward p-xylene, among others, can be achieved.
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公开(公告)号：US20220153659A1
公开(公告)日：2022-05-19
申请号：US17431846
申请日：2020-03-18
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Seth M. Washburn , Hsu Chiang , Catherine M. Dorsi , Tan-Jen Chen
Abstract: This disclosure provides an improved process for converting benzene/toluene via methylation with methanol/dimethyl ether for producing, e.g., p-xylene, comprising separating and recycling dimethyl ether from the methylation reaction product mixture effluent to the methylation reactor. High selectivity toward p-xylene, among others, can be achieved.
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公开(公告)号：US10259765B2
公开(公告)日：2019-04-16
申请号：US15743367
申请日：2016-06-17
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Jihad M. Dakka , Ashley J. Malik , Christopher L. Becker , Jason D. Davis , Kirk C. Nadler , Jose M. Vargas , Tan-Jen Chen , Seth M. Washburn , Jörg F. W. Weber
IPC: C07C45/00 , C07C2/74 , C07C407/00 , B01J23/96 , B01J38/04 , B01J38/06 , B01J38/12 , B01J38/52 , B01J38/56 , B01J23/44 , B01J35/00 , B01J8/06 , B01J38/10 , B01J38/50 , B01J38/64 , C07C49/403 , B01J23/58 , C07C37/00
Abstract: Disclosed are novel processes for making cyclohexanone compositions, from a mixture comprising phenol, cyclohexanone, and cyclohexylbenzene. The process includes hydrogenation of a feed stream comprising phenol, cyclohexanone, and cyclohexylbenzene. The feed stream may be subjected to one or more pre-hydrogenation treatments, such as passing through one or more sorbents, addition of basic chemical agents, and/or addition of water, so as to improve catalyst activity, minimize undesired side reactions, and/or remove catalyst poisons from the feed stream. The feed stream may be provided to a hydrogenation reaction zone in the vapor phase, with periodic alterations to hydrogenation reaction conditions such that the feed is provided in mixed liquid and vapor phase in order to carry out liquid washing of a hydrogenation catalyst bed within the hydrogenation reaction zone.
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公开(公告)号：US20180099913A1
公开(公告)日：2018-04-12
申请号：US15702337
申请日：2017-09-12
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Tan-Jen Chen , Seth M. Washburn
Abstract: A process is described for producing paraxylene, in which an aromatic hydrocarbon feedstock comprising benzene and/or toluene is contacted with an alkylating reagent comprising methanol and/or dimethyl ether in an alkylation reaction zone under alkylation conditions in the presence of an alkylation catalyst to produce an alkylated aromatic product comprising xylenes. The alkylation catalyst comprises a molecular sieve having a Constraint Index≤5, and the alkylation conditions comprise a temperature less than 500° C. Paraxylene may then be recovered from the alkylated aromatic product.
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公开(公告)号：US20220119324A1
公开(公告)日：2022-04-21
申请号：US17431745
申请日：2020-03-18
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Seth M. Washburn , Hsu Chiang , Umar Aslam , Wenyih F. Lai , Doron Levin , Tan-Jen Chen
Abstract: This disclosure provides improved processes for converting benzene/toluene via methylation with methanol/dimethyl ether for producing, e.g., p-xylene. In an embodiment, a process utilizes a methylation catalyst system comprising a molecular sieve catalyst and an auxiliary catalyst. The auxiliary catalyst comprises a metal element selected from Group 2, Group 3, the lanthanide series, the actinide series, and mixtures and combinations thereof. The auxiliary catalyst may comprise the oxide of the metal element. Deactivation of the molecular sieve catalyst can be reduced with the inclusion of the auxiliary catalyst in the methylation catalyst system.
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