公开(公告)号：US20210269319A1

公开(公告)日：2021-09-02

申请号：US17317469

申请日：2021-05-11

Applicant: Chevron U.S.A. Inc.

Inventor： Adeola Florence OJO ,  Dan XIE ,  Yihua ZHANG ,  Guan-Dao LEI

IPC: C01B39/02 ,  B01J29/74 ,  C01B39/46 ,  B01J29/70 ,  B01J29/80 ,  B01J35/00 ,  C01B39/48 ,  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.

公开(公告)号：US20200299142A1

公开(公告)日：2020-09-24

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: C01B39/02 ,  B01J29/74 ,  C01B39/46 ,  B01J29/70 ,  C01B39/48 ,  B01J29/80 ,  B01J35/00

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.

公开(公告)号：US20240228308A1

公开(公告)日：2024-07-11

申请号：US18604633

申请日：2024-03-14

Applicant: CHEVRON U.S.A. INC.

Inventor： Dan XIE ,  Kurt Owen JENSEN ,  Adeola Florence OJO

IPC: C01B39/48 ,  B01J29/70

CPC classification number: C01B39/48 ,  B01J29/703 ,  C01P2002/72

Abstract: A method is provided for synthesizing *MRE molecular sieves using an organic structure directing agent which comprises a 1-ethylpyridinium cation. The method provides an aluminosilicate molecular sieve of *MRE framework type which, in its as-synthesized form, comprises 1-ethylpyridinium cations in its pores.

公开(公告)号：US20240076560A1

公开(公告)日：2024-03-07

申请号：US18269239

申请日：2021-12-20

Applicant: CHEVRON U.S.A. INC.

Inventor： Yihua ZHANG ,  Guan-Dao LEI ,  Adeola Florence OJO

IPC: C10G45/64 ,  B01J29/76

CPC classification number: C10G45/64 ,  B01J29/7661 ,  C10G2300/80

Abstract: Described herein is a process for hydroisomerising a hydrocarbon feed. The process may comprise: combining a hydrocarbon feed and a hydroisomerisation additive to provide a combined feed; and contacting the combined feed with a hydroisomerisation catalyst comprising zeolite SSZ-91, where the hydroisomerisation additive is a substituted or unsubstituted nitrogen heterocycle.

公开(公告)号：US20220305471A1

公开(公告)日：2022-09-29

申请号：US17214782

申请日：2021-03-26

Applicant: CHEVRON U.S.A. INC.

Inventor： Adeola Florence OJO ,  Yihua ZHANG ,  Guan-Dao LEI ,  Howard S. LACHEEN

IPC: B01J29/80 ,  B01J29/74 ,  B01J37/04 ,  B01J37/03 ,  C10G45/64

Abstract: The present application pertains to family of new crystalline molecular sieves designated SSZ-92. Molecular sieve SSZ-92 is structurally similar to sieves falling within the ZSM-48 family of molecular sieves and is characterized as having magnesium.

公开(公告)号：US20220185685A1

公开(公告)日：2022-06-16

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

IPC: C01B39/46

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).

公开(公告)号：US20220143587A1

公开(公告)日：2022-05-12

申请号：US17095010

申请日：2020-11-11

Applicant: CHEVRON U.S.A INC.

Inventor： Yihua ZHANG ,  Adeola Florence OJO ,  Guan-Dao LEI

IPC: B01J29/74 ,  B01J29/70 ,  B01J29/80 ,  B01J21/04 ,  B01J35/10 ,  C10M109/02 ,  C10G45/64

Abstract: An improved hydroisomerization catalyst and process for making a base oil product wherein the catalyst comprises a base extrudate that includes SSZ-91 molecular sieve and a high nanopore volume alumina. The catalyst and process generally involves the use of a SSZ-91/high nanopore volume alumina based catalyst to produce dewaxed base oil products by contacting the catalyst with a hydrocarbon feedstock. The catalyst base extrudate advantageously comprises an alumina having a pore volume in the 11-20 nm pore diameter range of 0.05 to 1.0 cc/g, with the base extrudate formed from SSZ-91 and the alumina having a total pore volume in the 2-50 nm pore diameter range of 0.12 to 1.80 cc/g. The catalyst and process provide improved base oil yield with reduced gas and fuels production.