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公开(公告)号：US20220219152A1
公开(公告)日：2022-07-14
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
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：US20220143588A1
公开(公告)日：2022-05-12
申请号：US17095337
申请日：2020-11-11
Applicant: CHEVRON U.S.A. INC.
Inventor： Yihua ZHANG , Guan-Dao LEI
Abstract: An improved hydroisomerization catalyst system and process for making a base oil product using a combined catalyst system comprising SSZ-91 molecular sieve and SSZ-95 molecular sieve. The catalyst system and process generally involves the use of a catalyst comprising an SSZ-91 molecular sieve and a separate catalyst comprising an SSZ-95 molecular sieve to produce dewaxed base oil products by sequentially contacting the catalysts with a hydrocarbon feedstock. The catalyst system and process provide improved base oil yield along with other beneficial base oil properties.
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23.发明申请HYDROISOMERIZATION CATALYST WITH A BASE EXTRUDATE HAVING A LOW PARTICLE DENSITY 审中-公开具有低颗粒密度的基体挤出的水解催化剂公开(公告)号：US20160089665A1
公开(公告)日：2016-03-31
申请号：US14862341
申请日：2015-09-23
Applicant: CHEVRON U.S.A. INC.
Inventor： Yihua ZHANG , Kamala Raghunathan KRISHNA , Guan-Dao LEI , Theodorus Ludovicus Michael MAESEN
IPC: B01J29/74 , C10M101/02 , C10G45/64 , B01J35/10 , B01J35/00
CPC classification number: B01J29/74 , B01J21/04 , B01J29/7461 , B01J29/7492 , B01J35/00 , B01J35/0026 , B01J35/1019 , B01J35/1038 , B01J35/1042 , B01J35/1047 , B01J35/1061 , B01J35/108 , B01J35/1085 , C10G45/60 , C10G45/64 , C10G2300/1033 , C10G2300/107 , C10G2300/1077 , C10G2300/302 , C10G2300/304 , C10M101/02
Abstract: 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 a low particle density as compared to a conventional base extrudates.
Abstract translation: 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低颗粒密度的HNPV基础挤出物。
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24.发明申请HYDROISOMERIZATION CATALYST WITH A BASE EXTRUDATE HAVING A HIGH NANOPORE VOLUME 审中-公开具有高NANOPORE体积的碱性挤出物的水解催化剂公开(公告)号：US20160089663A1
公开(公告)日：2016-03-31
申请号：US14862302
申请日：2015-09-23
Applicant: CHEVRON U.S.A. INC.
Inventor： Yihua ZHANG , Kamala Raghunathan KRISHNA , Guan-Dao LEI , Theodorus Ludovicus Michael MAESEN
IPC: B01J29/74 , C10G45/64 , C10M101/02 , B01J35/10
CPC classification number: B01J29/74 , B01J21/04 , B01J29/7461 , B01J29/7492 , B01J35/00 , B01J35/0026 , B01J35/1019 , B01J35/1038 , B01J35/1042 , B01J35/1047 , B01J35/1061 , B01J35/108 , B01J2229/20 , C10G45/64 , C10M101/02
Abstract: 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 larger porosity with a bimodal pore size distribution as compared to a conventional base extrudates.
Abstract translation: 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。 与常规的基础挤出物相比，它们的组合产生具有更大孔隙率的HNPV基础挤出物，具有双峰孔径分布。
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公开(公告)号：US20240367159A1
公开(公告)日：2024-11-07
申请号：US18552655
申请日：2022-03-24
Applicant: CHEVRON U.S.A. INC.
Inventor： Adeola OJO , Yihua ZHANG , Guan-Dao LEI , Howard Steven LACHEEN
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.
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Patent Agency Ranking
公开(公告)号：US20240165596A1
公开(公告)日：2024-05-23
申请号：US18552664
申请日：2022-03-24
Applicant: CHEVRON U.S.A. INC.
Inventor： Adeola OJO , Yihua ZHANG , Guan-Dao LEI , Howard Steven LACHEEN
CPC classification number: 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
Abstract: 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.
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公开(公告)号：US20240101912A1
公开(公告)日：2024-03-28
申请号：US18038240
申请日：2021-11-22
Applicant: CHEVRON U.S.A. INC.
Inventor： Yihua ZHANG , Adeola OJO , Guan-Dao LEI
IPC: C10G45/64 , B01J29/74 , B01J29/80 , B01J37/02 , B01J37/04 , B01J37/08 , C10M109/02 , C10M177/00
CPC classification number: C10G45/64 , B01J29/7461 , B01J29/7469 , B01J29/80 , B01J37/0201 , B01J37/04 , B01J37/088 , C10M109/02 , C10M177/00 , B01J2029/062
Abstract: 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.
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公开(公告)号：US20240076564A1
公开(公告)日：2024-03-07
申请号：US18262178
申请日：2022-01-18
Applicant: CHEVRON U.S.A. INC.
Inventor： Yihua ZHANG , Subhasis BHATTACHARYA , Guan-Dao LEI
CPC classification number: C10G67/0418 , B01J29/7461 , C10G45/62 , C10G45/64 , C10G65/043 , C10G2300/302 , C10G2300/304 , C10G2300/70 , C10G2400/10
Abstract: 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.
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公开(公告)号：US20240059987A1
公开(公告)日：2024-02-22
申请号：US18269751
申请日：2021-12-24
Applicant: CHEVRON U.S.A. INC.
Inventor： Kenneth John PEINADO , Jifei JIA , Guan-Dao LEI , Jay PAREKH , Yihua ZHANG
CPC classification number: C10G67/0418 , C10G45/62 , C10G2300/1022 , C10G2300/304 , C10G2300/70 , C10G2400/10
Abstract: 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.
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公开(公告)号：US20230415134A1
公开(公告)日：2023-12-28
申请号：US18036621
申请日：2021-11-11
Applicant: CHEVRON U.S.A. INC.
Inventor： Yihua ZHANG , Guan Dao LEI
CPC classification number: B01J29/7446 , B01J29/7461 , B01J29/7492 , C10G25/03 , C10G2300/70 , C10G47/20 , C10G2300/302 , C10G2300/304 , C10G45/64
Abstract: An improved hydroisomerization catalyst system and process for making a base oil product using a combined catalyst system comprising SSZ-91 molecular sieve and SSZ-95 molecular sieve. The catalyst system and process generally involves the use of a catalyst comprising an SSZ-91 molecular sieve and a separate catalyst comprising an SSZ-95 molecular sieve to produce dewaxed base oil products by sequentially contacting the catalysts with a hydrocarbon feedstock. The catalyst system and process provide improved base oil yield along with other beneficial base oil properties.
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