公开(公告)号：US20240270585A1

公开(公告)日：2024-08-15

申请号：US18165387

申请日：2023-02-07

Applicant: CHEVRON U.S.A INC.

Inventor： Christopher Michael LEW ,  Rishabh JAIN ,  Cong-Yan CHEN

IPC: C01B39/08 ,  B01J29/70

CPC classification number: C01B39/087 ,  B01J29/7034 ,  C01P2004/62

Abstract: This disclosure relates to a ferrosilicate molecular sieve of MTW framework topology, its synthesis and use. Ferrosilicate MTW may be directly prepared using 1,3-diisobutylimidazolium cations as a structure directing agent. Ferrosilicate MTW may be used in organic compounds conversion and absorptive processes.

公开(公告)号：US20230357030A1

公开(公告)日：2023-11-09

申请号：US17739301

申请日：2022-05-09

Applicant: CHEVRON U.S.A. INC.

Inventor： Christopher Michael LEW

IPC: C01B39/06

CPC classification number: C01B39/06

Abstract: Methods are provided for preparing molecular sieves CIT-13 and CIT-15 having aluminum incorporated into the framework structures.

公开(公告)号：US20240299917A1

公开(公告)日：2024-09-12

申请号：US18177309

申请日：2023-03-02

Applicant: CHEVRON U.S.A. INC.

Inventor： Christopher Michael LEW ,  Rebecca Edyne MACLEAN ,  Kurt Owen JENSEN

IPC: B01J29/70 ,  B01J35/02 ,  B01J37/00 ,  B01J37/03 ,  B01J37/04 ,  C01B39/48

CPC classification number: B01J29/70 ,  B01J35/40 ,  B01J37/0018 ,  B01J37/031 ,  B01J37/04 ,  C01B39/48 ,  C01P2002/60 ,  C01P2002/72 ,  C01P2004/03

Abstract: A method is disclosed for producing small crystal forms of zeolite SSZ-81. The method includes forming a reaction mixture containing an alumina-coated silica sol, a source of an alkali metal, a structure directing agent containing 1,5-bis(N-methylpiperidinium)pentane dications and/or 1,5-bis(1-azonia-bicyclo[2.2.2]octane)pentane dications, a source of hydroxide ions, and water; and subjecting the reaction mixture to crystallization conditions sufficient to form crystals of the zeolite. The compositions made according to that method, as well as the various uses of the compositions, are also disclosed.

公开(公告)号：US20240140811A1

公开(公告)日：2024-05-02

申请号：US17964981

申请日：2022-10-13

Applicant: CHEVRON U.S.A. INC.

Inventor： Christopher Michael LEW

IPC: C01B39/24 ,  C01B39/04

CPC classification number: C01B39/24 ,  C01B39/04

Abstract: A method for preparing an aluminosilicate molecular sieve having the SSY framework structure is described. The method includes (1) a step of preparing a reaction mixture containing an aluminosilicate zeolite having an FAU framework type; N-ethyl-N-(3,3,5-trimethylcyclohexyl)pyrrolidinium cations and/or N-ethyl-N-(2,4,4-trimethylcyclopentyl)pyrrolidinium cations; an alkali metal; hydroxide ions; seed crystals; and water; and (2) a step of subjecting the reaction mixture to crystallization conditions sufficient to form crystals of the aluminosilicate molecular sieve. The resulting molecular sieves are useful as catalysts, particularly when used in combination with exchanged transition metal(s).

公开(公告)号：US20220347663A1

公开(公告)日：2022-11-03

申请号：US17241204

申请日：2021-04-27

Applicant: CHEVRON U.S.A. INC.

Inventor： Christopher Michael LEW ,  Cong-Yan CHEN ,  Bi-Zeng ZHAN ,  Stacey Ian ZONES

IPC: B01J29/88 ,  C01B33/26 ,  B01J23/44 ,  C07C5/27

Abstract: A ferrosilicate molecular sieve having the framework structure of SSZ-70 and a method of making the same is disclosed. The ferrosilicate molecular sieve can be used in processes for dewaxing paraffinic hydrocarbon feedstocks.

公开(公告)号：US20160068403A1

公开(公告)日：2016-03-10

申请号：US14836314

申请日：2015-08-26

Applicant: CHEVRON U.S.A. INC

Inventor： Tianxiang LIU ,  Tracy Margaret DAVIS ,  Christopher Michael LEW ,  Dan XIE ,  Saleh Ali ELOMARI ,  Michael W. DEEM

IPC: C01B39/48

CPC classification number: C01B39/48

Abstract: A method is disclosed for preparing zeolite SSZ-52 using a computationally predicted organic structure directing agent. The computationally predicted structure organic directing agent is an organic structure directing agent other than an N,N-diethyl-5,8-dimethyl-azonium bicyclo[3.2.2.]nonane cation, and the difference in stabilization energy between the organic structure directing agent other than an N,N-diethyl-5,8-dimethyl-azonium bicyclo[3.2.2.]nonane cation and the N,N-diethyl-5,8-dimethyl-azonium bicyclo[3.2.2.]nonane cation is no more than 2.5 kJ mol−1 Si.

Abstract translation: 公开了一种使用计算预测的有机结构导向剂制备沸石SSZ-52的方法。 计算预测的结构有机导向剂是N，N-二乙基-5,8-二甲基 - 薁双环[3.2.2]壬烷阳离子以外的有机结构导向剂，有机结构指向 N，N-二乙基-5,8-二甲基吖啶双环[3.2.2。]壬烷阳离子和N，N-二乙基-5,8-二甲基薁双环[3.2.2。]壬烷阳离子 不大于2.5kJ mol-1 Si。

公开(公告)号：US20200330973A1

公开(公告)日：2020-10-22

申请号：US16838104

申请日：2020-04-02

Applicant: CHEVRON U.S.A. INC.

Inventor： Christopher Michael LEW ,  Kurt Owen JENSEN

IPC: B01J37/06 ,  C10G73/02 ,  B01J6/00 ,  B01J29/04

Abstract: A method is provided for the synthesis of aluminum-containing forms of molecular sieve CIT-15. The method includes treating an aluminogermanosilicate CIT-13 molecular sieve with water under conditions sufficient to degermanate at least a portion of the aluminogermanosilicate CIT-13 molecular sieve to provide a phyllosilicate comprising delaminated cfi-layers; and calcining the phyllosilicate under conditions sufficient to convert the phyllosilicate to an aluminogermanosilicate CIT-15 molecular sieve.

公开(公告)号：US20160068402A1

公开(公告)日：2016-03-10

申请号：US14836290

申请日：2015-08-26

Applicant: CHEVRON U.S.A. INC

Inventor： Tianxiang LIU ,  Tracy Margaret DAVIS ,  Christopher Michael LEW ,  Dan XIE ,  Saleh Ali ELOMARI ,  Michael W. DEEM

IPC: C01B39/48

CPC classification number: C01B39/48 ,  C01B39/06

Abstract: A method is disclosed for synthesizing zeolite SSZ-52 in the presence of an organic structure directing agent having the following structure (1): wherein R1, R2, R3 and R4 are independently selected from the group consisting of alkyl groups having from 1 to 3 carbon atoms and n has a value of 0, 1 or 2.

Abstract translation: 公开了一种在具有以下结构（1）的有机结构导向剂存在下合成沸石SSZ-52的方法：其中R 1，R 2，R 3和R 4独立地选自具有1至3个 碳原子和n具有0,1或2的值。