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公开(公告)号：US11591231B2
公开(公告)日：2023-02-28
申请号：US17358472
申请日：2021-06-25
Applicant: CHEVRON U.S.A. INC.
Inventor： Joel Edward Schmidt , Adeola Florence Ojo , Cong-Yan Chen
Abstract: An organotemplate-free synthetic process for the production of a zeolite of TON framework type structure is provided. The process includes the steps of: (1) preparing a mixture comprising: (a) an alumina-coated silica; (b) a source of an alkali metal; (c) an alcohol; (d) a source of hydroxide ions; (e) seed crystals comprising a zeolitic material having a TON framework type structure; and (f) water; and (2) crystallizing the mixture obtained in step (1).
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公开(公告)号：US11001502B2
公开(公告)日：2021-05-11
申请号：US16848551
申请日：2020-04-14
Applicant: Chevron U.S.A. Inc.
Inventor： Adeola Florence Ojo , Dan Xie , Yihua Zhang , Guan-Dao Lei
IPC: C01B39/48 , C07C5/13 , B01J29/70 , C01B39/02 , B01J29/74 , C01B39/46 , B01J29/80 , B01J35/00 , B01J29/72 , B01J29/76
Abstract: A family of new crystalline molecular sieves designated SSZ-91 is disclosed, as are methods for making SSZ-91 and uses for SSZ-91. Molecular sieve SSZ-91 is structurally similar to sieves falling within the ZSM-48 family of molecular sieves, and is characterized as: (1) having a low degree of faulting, (2) a low aspect ratio that inhibits hydrocracking as compared to conventional ZSM-48 materials having an aspect ratio of greater than 8, and (3) is substantially phase pure.
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公开(公告)号：US20190002299A1
公开(公告)日：2019-01-03
申请号：US15753074
申请日：2016-08-11
Applicant: Chevron U.S.A. Inc.
Inventor： Adeola Florence Ojo , Dan Xie , Yihua Zhang , Guan-Dao Lei
Abstract: A family of new crystalline molecular sieves designated SSZ-91 is disclosed, as are methods for making SSZ-91 and uses for SSZ-91. Molecular sieve SSZ-91 is structurally similar to sieves falling within the ZSM-48 family of molecular sieves, and is characterized as: (1) having a low degree of faulting, (2) a low aspect ratio that inhibits hydrocracking as compared to conventional ZSM-48 materials having an aspect ratio of greater than 8, and (3) is substantially phase pure.
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公开(公告)号：US10160657B2
公开(公告)日：2018-12-25
申请号：US15785504
申请日：2017-10-17
Applicant: Chevron U.S.A. Inc.
Inventor： Stacey Ian Zones , Cong-Yan Chen , Adeola Florence Ojo
Abstract: The present disclosure is directed to a high-silica form of zeolite SSZ-32x, its synthesis in fluoride media using dipropylamine as a structure directing agent, and its use in catalytic processes.
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公开(公告)号：US11565943B2
公开(公告)日：2023-01-31
申请号：US17173712
申请日：2021-02-11
Applicant: CHEVRON U.S.A. INC.
Inventor： Joel Edward Schmidt , Adeola Florence Ojo
Abstract: A method is disclosed making a molecular of TON framework type having unique properties. The method uses 1,3,4-trimethylimidazolium cations as a structure directing agent and a combined source of silicon and aluminum selected from alumina-coated silica and aluminosilicate zeolites. The obtained molecular sieve can be used in processes for dewaxing paraffinic hydrocarbon feedstocks.
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Patent Agency Ranking
公开(公告)号：US10604413B2
公开(公告)日：2020-03-31
申请号：US16200729
申请日：2018-11-27
Applicant: Chevron U.S.A. Inc.
Inventor： Dan Xie , Adeola Florence Ojo
Abstract: A molecular sieve of *MRE framework can be synthesized using one or more of (2-hydroxyethyl)trimethylammonium cations, (2-hydroxpropyl)trimethylammonium cations, propyltrimethylammonium cations, and benzyltrimethylammonium cations as a structure directing agent.
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公开(公告)号：US20190276323A1
公开(公告)日：2019-09-12
申请号：US16200729
申请日：2018-11-27
Applicant: Chevron U.S.A. Inc.
Inventor： Dan Xie , Adeola Florence Ojo
IPC: C01B39/48
Abstract: A molecular sieve of *MRE framework can be synthesized using one or more of (2-hydroxyethyl)trimethylammonium cations, (2-hydroxpropyl)trimethylammonium cations, propyltrimethylammonium cations, and benzyltrimethylammonium cations as a structure directing agent.
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公开(公告)号：US09920260B2
公开(公告)日：2018-03-20
申请号：US14837108
申请日：2015-08-27
Applicant: Chevron U.S.A. Inc.
Inventor： Adeola Florence Ojo , Dan Xie , Yihua Zhang , Guan-Dao Lei
IPC: C10G45/64 , B01J29/80 , B01J29/74 , C07C5/27 , C10M105/04
CPC classification number: C10G45/64 , B01J29/74 , B01J29/7446 , B01J29/7461 , B01J29/80 , B01J35/002 , B01J2229/186 , C07C5/2708 , C07C5/2737 , C07C2529/70 , C07C2529/74 , C07C2529/80 , C10M105/04 , C07C9/22
Abstract: Uses for a family of new crystalline molecular sieves designated SSZ-91 are disclosed. Molecular sieve SSZ-91 is structurally similar to sieves falling within the ZSM-48 family of molecular sieves, and is characterized as: (1) having a low degree of faulting, (2) a low aspect ratio that inhibits hydrocracking as compared to conventional ZSM-48 materials having an aspect ratio of greater than 8, and (3) is substantially phase pure.
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公开(公告)号：US11865527B2
公开(公告)日：2024-01-09
申请号：US17147725
申请日：2021-01-13
Applicant: CHEVRON U.S.A. INC.
Inventor： Yihua Zhang , Adeola Florence Ojo , Guan-Dao Lei
CPC classification number: B01J29/7661 , B01J35/026 , C10G45/64
Abstract: A hydroisomerization catalyst comprising a molecular sieve belonging to the ZSM-48 family of zeolites; an inorganic oxide support; one or more first modifiers selected from Groups 8 to 10; and one or more second modifiers selected from the group consisting of calcium (Ca), chromium (Cr), magnesium (Mg), lanthanum (La), barium (Ba), praseodymium (Pr), strontium (Sr), potassium (K) and neodymium (Nd). The molecular sieve comprises: a silicon oxide to aluminum oxide mole ratio of about 40 to about 220; at least about 70% polytype 6 of the total ZSM-48-type material present in the product; and an additional EUO-type molecular sieve phase in an amount of between about 0 and about 7.0 percent by weight of the total product. The molecular sieve has a morphology characterized as polycrystalline aggregates comprising crystallites collectively having an average aspect ratio of between about 1 and about 8.
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公开(公告)号：US11220435B1
公开(公告)日：2022-01-11
申请号：US17214793
申请日：2021-03-26
Applicant: CHEVRON U.S.A. INC.
Inventor： Adeola Florence Ojo
Abstract: The present application pertains to family of new crystalline molecular sieves designated SSZ-94. Molecular sieve SSZ-94 is structurally similar to sieves falling within the MTT structure type such as SSZ-32x, SSZ-32, ZSM-23, EU-13, ISI-4, and KZ-1 family of molecular sieves. SSZ-94 is characterized as having magnesium.
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