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公开(公告)号：US20130259775A1
公开(公告)日：2013-10-03
申请号：US13899854
申请日：2013-05-22
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Doron Levin , April D. Ross , James H. Beech, JR.
IPC: B01J8/04
CPC classification number: B01J8/04 , B01J29/064 , B01J29/072 , B01J29/076 , B01J29/44 , B01J29/46 , B01J29/7034 , B01J29/7669 , B01J35/0006 , B01J35/023 , B01J37/0009 , B01J37/20 , B01J2229/42 , C07C6/12 , C07C2529/42 , Y02P20/52 , C07C15/08
Abstract: In a process for producing xylene by transalkylation of a C9+ aromatic hydrocarbon feedstock with a C6 and/or C7 aromatic hydrocarbon, the C9+ aromatic hydrocarbon feedstock, at least one C6 and/or C7 aromatic hydrocarbon and hydrogen are contacted with a first catalyst comprising (i) a first molecular sieve having a Constraint Index in the range of about 3 to about 12 and (ii) at least first and second different metals or compounds thereof of Groups 6 to 12 of the Periodic Table of the Elements. Contacting with the first catalyst is conducted under conditions effective to dealkylate aromatic hydrocarbons in the feedstock containing C2+ alkyl groups and to saturate C2+ olefins formed so as to produce a first effluent. At least a portion of the first effluent is then contacted with a second catalyst comprising a second molecular sieve having a Constraint Index less than 3 under conditions effective to transalkylate C9+ aromatic hydrocarbons with said at least one C6-C7 aromatic hydrocarbon to form a second effluent comprising xylene.
Abstract translation: 在通过C 9 +芳族烃原料与C 6和/或C 7芳烃的烷基转移生产二甲苯的方法中，C 9 +芳烃原料，至少一种C 6和/或C 7芳烃和氢与第一催化剂接触，所述第一催化剂包含（ i）具有在约3至约12范围内的约束指数的第一分子筛和（ii）至少元素周期表第6至12族的第一和第二不同金属或其化合物。 与第一催化剂接触在有效地使含有C 2 +烷基的原料中芳族烃脱烷基化并使形成的C 2 +烯烃饱和以产生第一流出物的条件下进行。 然后至少一部分第一流出物与包含第二分子筛的第二催化剂接触，该第二催化剂在有效使C 9+芳族烃与所述至少一种C 6 -C 7芳族烃烷基转移的条件下具有小于3的约束指数，以形成第二流出物 包括二甲苯。
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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：US11701645B2
公开(公告)日：2023-07-18
申请号：US17284636
申请日：2019-10-10
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Larry L. Iaccino , Jeremy W. Bedard , Xiaoying Bao , Andrew P. Palermo , Nitish Mittal , Maria Milina , Doron Levin , William R. Gunther , Wenyih F. Lai , Tilman W. Beutel
IPC: B01J29/44 , B01J6/00 , B01J8/02 , B01J29/46 , B01J37/00 , B01J37/02 , B01J37/04 , B01J37/08 , C07C5/373
CPC classification number: B01J29/44 , B01J6/002 , B01J8/0285 , B01J29/46 , B01J37/0009 , B01J37/0207 , B01J37/04 , B01J37/082 , C07C5/373 , C07C2529/44 , C07C2529/46
Abstract: A catalyst comprising a microporous crystalline metallosilicate having a Constraint Index of 12, or 10, or 8, or 6 or less, a binder, a Group 1 alkali metal or a compound thereof and/or a Group 2 alkaline earth metal or a compound thereof, a Group 10 metal or a compound thereof, and, optionally, a Group 11 metal or a compound thereof; wherein the catalyst is calcined in a first calcining step before the addition of the Group 10 metal or compound thereof and optionally the Group 11 metal or compound thereof; and wherein the first calcining step includes heating the catalyst to first temperatures of greater than 500° C.; and wherein the catalyst is calcined in a second calcining step after the addition of the Group 10 metal or compound thereof and optionally the Group 11 metal or compound thereof wherein the second calcining step includes heating the catalyst to temperatures of greater than 400° C.
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公开(公告)号：US11377399B2
公开(公告)日：2022-07-05
申请号：US16759866
申请日：2018-11-15
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Michel Molinier , Hari Nair , Scott J. Weigel , Michael Salciccioli , Doron Levin
Abstract: A process and related system for producing para-xylene (PX). In an embodiment, the process includes (a) separating a feed stream comprising C6+ aromatic hydrocarbons into a toluene containing stream and a C8+ hydrocarbon containing stream and (b) contacting at least part of the toluene containing stream with a methylating agent in a methylation unit to convert toluene to xylenes and produce a methylated effluent stream. In addition, the process includes (c) recovering PX from the methylated effluent stream in (b) to produce a PX depleted stream and (d) transalkylating the PX depleted stream to produce a transalkylation effluent stream. The transalkylation effluent stream includes a higher concentration of toluene than the PX depleted stream. Further, the process includes (e) converting at least some ethylbenzene (EB) within the C8+ hydrocarbon containing stream into toluene and (f) flowing the toluene converted in (e) to the contacting in (b).
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公开(公告)号：US20210017102A1
公开(公告)日：2021-01-21
申请号：US16903009
申请日：2020-06-16
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Hari Nair , Meha Rungta , Michel Molinier , Doron Levin , Scott J. Weigel , Michael Salciccioli , John F. Brody
Abstract: Alkyl-demethylation of C2+-hydrocarbyl substituted aromatic hydrocarbons can be utilized to treat one or more of a heavy naphtha reformate stream, a hydrotreated SCN stream, a C8 aromatic hydrocarbon isomerization feed stream, a C9+ aromatic hydrocarbon transalkylation feed stream, and similar hydrocarbon streams to produce additional quantity of xylene products.
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Patent Agency Ranking
公开(公告)号：US20200376471A1
公开(公告)日：2020-12-03
申请号：US16497239
申请日：2018-03-19
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Matthew S. Ide , Brett T. Loveless , Doron Levin , William W. Lonergan , Matthew J. Vincent , Wei-Ping Tai , Federico Barrai
Abstract: Catalyst compositions comprising a zeolite and a mesoporous support or binder are disclosed. The mesoporous support or binder comprises a mesoporous metal oxide having a particle diameter of greater than or equal to 20 μm at 50% of the cumulative pore size distribution (d50). Also disclosed are processes for producing a mono-alkylated aromatic compound (e.g., ethylbenzene or cumene) which exhibit improved yield of the mono-alkylated aromatic compound using alkylation catalysts comprising one or more of these catalyst compositions.
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公开(公告)号：US20190283002A1
公开(公告)日：2019-09-19
申请号：US16269959
申请日：2019-02-07
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Doron Levin
Abstract: Disclosed herein are methods of preparing dehydrogenation catalysts using non-halogen containing metal sources. The methods generally comprise the steps of providing a first solution comprising anions of a first metal selected from Group 14 of the Periodic Table of Elements, and impregnating an inorganic support with the first solution to obtain a first impregnated inorganic support, wherein the first solution has a pH value of less than the isoelectric point of the inorganic support. The dehydrogenation catalysts prepared in accordance with the methods of the present disclosure are typically free or substantially free of halogen species. Such catalysts may be particularly useful in the dehydrogenation of a feed comprising cyclohexane and/or methylcyclopentane.
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公开(公告)号：US09006125B2
公开(公告)日：2015-04-14
申请号：US13899854
申请日：2013-05-22
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Doron Levin , April D. Ross , James H. Beech, Jr.
IPC: B01J29/06 , B01J8/04 , B01J29/064 , B01J29/072 , B01J29/076 , B01J29/44 , B01J29/46 , B01J29/70 , B01J29/76 , B01J35/00 , B01J35/02 , B01J37/20 , C07C6/12 , B01J37/00
CPC classification number: B01J8/04 , B01J29/064 , B01J29/072 , B01J29/076 , B01J29/44 , B01J29/46 , B01J29/7034 , B01J29/7669 , B01J35/0006 , B01J35/023 , B01J37/0009 , B01J37/20 , B01J2229/42 , C07C6/12 , C07C2529/42 , Y02P20/52 , C07C15/08
Abstract: In a process for producing xylene by transalkylation of a C9+ aromatic hydrocarbon feedstock with a C6 and/or C7 aromatic hydrocarbon, the C9+ aromatic hydrocarbon feedstock, at least one C6 and/or C7 aromatic hydrocarbon and hydrogen are contacted with a first catalyst comprising (i) a first molecular sieve having a Constraint Index in the range of about 3 to about 12 and (ii) at least first and second different metals or compounds thereof of Groups 6 to 12 of the Periodic Table of the Elements. Contacting with the first catalyst is conducted under conditions effective to dealkylate aromatic hydrocarbons in the feedstock containing C2+ alkyl groups and to saturate C2+ olefins formed so as to produce a first effluent. At least a portion of the first effluent is then contacted with a second catalyst comprising a second molecular sieve having a Constraint Index less than 3 under conditions effective to transalkylate C9+ aromatic hydrocarbons with said at least one C6-C7 aromatic hydrocarbon to form a second effluent comprising xylene.
Abstract translation: 在通过C 9 +芳族烃原料与C 6和/或C 7芳烃的烷基转移生产二甲苯的方法中，C 9 +芳烃原料，至少一种C 6和/或C 7芳烃和氢与第一催化剂接触，所述第一催化剂包含（ i）具有在约3至约12范围内的约束指数的第一分子筛和（ii）至少元素周期表第6至12族的第一和第二不同金属或其化合物。 与第一催化剂接触在有效地使含有C 2 +烷基的原料中芳族烃脱烷基化并使形成的C 2 +烯烃饱和以产生第一流出物的条件下进行。 然后至少一部分第一流出物与包含第二分子筛的第二催化剂接触，该第二催化剂在有效使C 9+芳族烃与所述至少一种C 6 -C 7芳族烃烷基转移的条件下具有小于3的约束指数，以形成第二流出物 包括二甲苯。
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公开(公告)号：US11535578B2
公开(公告)日：2022-12-27
申请号：US16820227
申请日：2020-03-16
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Seth M. Washburn , Hsu Chiang , Umar Aslam , Wenyih Frank Lai , Doron Levin , Tan-Jen Chen
Abstract: This disclosure provides improved processes for converting aromatic hydrocarbons, such as benzene/toluene, alkylation, transalkylation, or isomerization. In an embodiment, a process comprises utilizing a passivated reactor to reduce deactivation of a molecular sieve catalyst. Additional measures such as the use of an auxiliary catalyst and/or an elevated reactor pressure may be used to further reduce deactivation of the molecular sieve catalyst.
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公开(公告)号：US20220126279A1
公开(公告)日：2022-04-28
申请号：US17436187
申请日：2020-03-26
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Joseph E. Gatt , Maryam Peer , Natalie A. Fassbender , William J. Knaeble , Jocelyn A. Gilcrest , Wenyih F. Lai , Paul Podsiadlo , Thomas J. Ferro , Doron Levin , Benjamin C. Gamoke
Abstract: Methods and corresponding catalysts are provided for conversion of an aromatic feed containing C8+ aromatics (particularly C9+ aromatics) to form a converted product mixture comprising, e.g., benzene and/or xylenes. The aromatic feed can be converted in the presence of a catalyst that includes a silica binder, a mixture of a first zeolite having an MEL framework (such as ZSM-11 and/or an MFI framework (such as ZSM-5), and a second zeolite having an MOR framework, such as mordenite, particularly a mordenite synthesized using TEA or MTEA as a structure directing agent, and a metal. The catalyst can further include one or more metals supported on the catalyst.
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