公开(公告)号：US20240110120A1

公开(公告)日：2024-04-04

申请号：US18262171

申请日：2022-01-18

申请人： CHEVRON U.S.A. INC.

发明人： Yihua ZHANG ,  Guan-Dao LEI ,  Malek M. ROSTAMI ,  Beth A. RUSSELL

IPC分类号： C10M133/44 ,  C10M169/04

CPC分类号： C10M133/44 ,  C10M169/04 ,  C10N2030/20

摘要： A method for making a base oil having enhanced color stability and the base oil prepared therefrom are disclosed. The method comprises adding a phenyl benzotriazole compound to a base oil composition to form a color-stabilized base oil composition. In some cases, the phenyl benzotriazole compound has the structural formula (I):




wherein,



R and R′ are independently one or more substituents selected from hydrogen, substituted and unsubstituted alkyl, substituted and unsubstituted cycloalkyl, substituted and unsubstituted alkoxy, substituted and unsubstituted carboxyl, or a combination thereof, with the proviso that at least one of R and R′ is a non-hydrogen substituent.

公开(公告)号：US20220162508A1

公开(公告)日：2022-05-26

申请号：US17105614

申请日：2020-11-26

申请人： Chevron U.S.A. Inc.

发明人： Yihua ZHANG ,  Adeola Florence OJO ,  Guan-Dao LEI

IPC分类号： C10G45/64 ,  B01J29/80 ,  B01J29/74 ,  B01J37/04 ,  B01J37/02 ,  B01J37/08 ,  C10M109/02 ,  C10M177/00

摘要： An improved hydroisomerization catalyst and process for making a base oil product using a catalyst comprising SSZ-91 molecular sieve and ZSM-12 molecular sieve. The catalyst and process generally involves the use of a catalyst comprising an SSZ-91 molecular sieve combined with a ZSM-12 molecular sieve to produce dewaxed base oil products by contacting the catalyst with a hydrocarbon feedstock. The catalyst and process provide improved base oil cold properties, such as pour point and cloud point, along with other beneficial base oil properties.

公开(公告)号：US20160089664A1

公开(公告)日：2016-03-31

申请号：US14862324

申请日：2015-09-23

申请人： CHEVRON U.S.A. INC.

发明人： Yihua ZHANG ,  Kamala Raghunathan KRISHNA ,  Guan-Dao LEI ,  Theodorus Ludovicus Michael MAESEN

IPC分类号： B01J29/74 ,  C10G45/64 ,  C10M101/02 ,  B01J35/10

CPC分类号： B01J29/74 ,  B01J21/04 ,  B01J29/7461 ,  B01J29/7492 ,  B01J35/00 ,  B01J35/0026 ,  B01J35/1019 ,  B01J35/1038 ,  B01J35/1042 ,  B01J35/1047 ,  B01J35/1061 ,  B01J35/108 ,  C10G45/60 ,  C10G45/64 ,  C10G2300/1033 ,  C10G2300/107 ,  C10G2300/1077 ,  C10G2300/302 ,  C10G2300/304 ,  C10M101/02

摘要： The present invention is directed to an improved finished hydroisomerization catalyst manufactured from a first high nanopore volume (HNPV) alumina having a broad pore size distribution (BPSD), and a second HNPV alumina having narrow pore size distribution (NPSD). Their combination yields a HNPV base extrudate having higher total nanopore volume with a bimodal pore size distribution as compared to a conventional base extrudates.

摘要翻译： 本发明涉及由具有宽孔径分布（BPSD）的第一高纳米孔体积（HNPV）氧化铝和具有窄孔径分布（NPSD）的第二HNPV氧化铝制成的改进的成品加氢异构化催化剂。 与传统的基础挤出物相比，它们的组合产生具有更高总纳米孔体积的HNPV基挤出物，具有双峰孔径分布。

公开(公告)号：US20240165596A1

公开(公告)日：2024-05-23

申请号：US18552664

申请日：2022-03-24

申请人： CHEVRON U.S.A. INC.

发明人： Adeola OJO ,  Yihua ZHANG ,  Guan-Dao LEI ,  Howard Steven LACHEEN

IPC分类号： B01J29/74 ,  B01J29/70 ,  B01J35/61 ,  B01J35/63 ,  B01J37/03 ,  B01J37/30 ,  C01B39/06 ,  C07C5/27

CPC分类号： B01J29/7492 ,  B01J29/7046 ,  B01J35/615 ,  B01J35/633 ,  B01J37/03 ,  B01J37/30 ,  C01B39/06 ,  C07C5/2708 ,  B01J2229/16 ,  B01J2229/186 ,  C01P2002/72 ,  C01P2002/82 ,  C01P2004/03 ,  C01P2004/04 ,  C01P2006/12 ,  C01P2006/14 ,  C07C2523/44 ,  C07C2529/70 ,  C07C2529/74

摘要： The present application pertains to family of new crystalline molecular sieves designated SSZ-93. Molecular sieve SSZ-93 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-93 is characterized as having magnesium.

公开(公告)号：US20240101912A1

公开(公告)日：2024-03-28

申请号：US18038240

申请日：2021-11-22

申请人： CHEVRON U.S.A. INC.

发明人： Yihua ZHANG ,  Adeola OJO ,  Guan-Dao LEI

IPC分类号： C10G45/64 ,  B01J29/74 ,  B01J29/80 ,  B01J37/02 ,  B01J37/04 ,  B01J37/08 ,  C10M109/02 ,  C10M177/00

CPC分类号： C10G45/64 ,  B01J29/7461 ,  B01J29/7469 ,  B01J29/80 ,  B01J37/0201 ,  B01J37/04 ,  B01J37/088 ,  C10M109/02 ,  C10M177/00 ,  B01J2029/062

摘要： An improved hydroisomerization catalyst and process for making a base oil product using a catalyst comprising SSZ-91 molecular sieve and ZSM-12 molecular sieve. The catalyst and process generally involves the use of a catalyst comprising an SSZ-91 molecular sieve combined with a ZSM-12 molecular sieve to produce dewaxed base oil products by contacting the catalyst with a hydrocarbon feedstock. The catalyst and process provide improved base oil cold properties, such as pour point and cloud point, along with other beneficial base oil properties.

公开(公告)号：US20240076564A1

公开(公告)日：2024-03-07

申请号：US18262178

申请日：2022-01-18

申请人： CHEVRON U.S.A. INC.

发明人： Yihua ZHANG ,  Subhasis BHATTACHARYA ,  Guan-Dao LEI

IPC分类号： C10G67/04 ,  B01J29/74 ,  C10G45/62 ,  C10G45/64 ,  C10G65/04

CPC分类号： C10G67/0418 ,  B01J29/7461 ,  C10G45/62 ,  C10G45/64 ,  C10G65/043 ,  C10G2300/302 ,  C10G2300/304 ,  C10G2300/70 ,  C10G2400/10

摘要： Described are processes to produce base oils with one more improved properties, e.g., lower aromatics, economically and/or efficiently. In some embodiments, the processes relate to two stage (or more) hydrofinishing which advantageously provides base oils with lower aromatics than comparable one stage processes.

公开(公告)号：US20240059987A1

公开(公告)日：2024-02-22

申请号：US18269751

申请日：2021-12-24

申请人： CHEVRON U.S.A. INC.

发明人： Kenneth John PEINADO ,  Jifei JIA ,  Guan-Dao LEI ,  Jay PAREKH ,  Yihua ZHANG

IPC分类号： C10G67/04 ,  C10G45/62

CPC分类号： C10G67/0418 ,  C10G45/62 ,  C10G2300/1022 ,  C10G2300/304 ,  C10G2300/70 ,  C10G2400/10

摘要： Provided is a process for preparing base oil from a waxy hydrocarbon feedstock by contacting the hydrocarbon feedstock in a hydroisomerization zone under hydroisomerization conditions. The reaction is in the presence of hydrogen and an inert gas, with the total pressure in the hydroisomerization zone being at least 400 psig. A product from the hydroisomerization zone is collected and separated into base oil products and fuel products. The inert gas can comprise any suitable inert gas, but is generally nitrogen, methane or argon. Nitrogen is used in one embodiment.

公开(公告)号：US20230348798A1

公开(公告)日：2023-11-02

申请号：US18042724

申请日：2021-08-30

申请人： CHEVRON U.S.A. INC.

发明人： Subhasis BHATTACHARYA ,  Yihua ZHANG ,  Guan-Dao LEI ,  Ajit R. PRADHAN

IPC分类号： C10G45/62 ,  C10G45/64 ,  C10G65/04 ,  B01J29/74

CPC分类号： C10G45/62 ,  B01J29/74 ,  C10G45/64 ,  C10G65/043 ,  C10G2300/302 ,  C10G2300/304 ,  C10G2400/10

摘要： An improved process and catalyst system for making a base oil product and for improving base oil cloud point and pour point characteristics, while also providing good product yields. The process and catalyst system generally involves the use of a layered catalyst system comprising an SSZ-91 catalyst and an SSZ-32X catalyst arranged to sequentially contact a hydrocarbon feedstock with both catalysts and thereby provide dewaxed base oil products.

公开(公告)号：US20210269319A1

公开(公告)日：2021-09-02

申请号：US17317469

申请日：2021-05-11

申请人： Chevron U.S.A. Inc.

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

IPC分类号： C01B39/02 ,  B01J29/74 ,  C01B39/46 ,  B01J29/70 ,  B01J29/80 ,  B01J35/00 ,  C01B39/48 ,  B01J29/72 ,  B01J29/76

摘要： 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

申请人： Chevron U.S.A. Inc.

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

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

摘要： 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.