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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：US09802830B2
公开(公告)日：2017-10-31
申请号：US14837071
申请日：2015-08-27
Applicant: Chevron U.S.A. Inc.
Inventor： Adeola Florence Ojo , Dan Xie , Yihua Zhang , Guan-Dao Lei
CPC classification number: C01B39/023 , B01J29/7023 , B01J29/703 , B01J29/7034 , B01J29/7446 , B01J29/7461 , B01J29/80 , B01J35/002 , C01B39/46 , C01B39/48 , C01P2004/54
Abstract: A family of new crystalline molecular sieves designated SSZ-91 is 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：US20170058209A1
公开(公告)日：2017-03-02
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 , C10M105/04 , C07C5/27 , B01J29/80 , B01J29/74
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.
Abstract translation: 公开了一种称为SSZ-91的新型结晶分子筛系列的用途。 分子筛SSZ-91在结构上类似于落在ZSM-48族分子筛内的筛，其特征在于：（1）具有低断层程度，（2）与常规的相比，抑制加氢裂化的低纵横比 长径比大于8的ZSM-48材料和（3）基本上是相纯的。
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公开(公告)号：US20170056869A1
公开(公告)日：2017-03-02
申请号：US14837087
申请日：2015-08-27
Applicant: Chevron U.S.A. Inc.
Inventor： Adeola Florence Ojo , Dan Xie , Yihua Zhang , Guan-Dao Lei
CPC classification number: B01J29/80 , B01J29/7023 , B01J29/703 , B01J29/7446 , B01J29/7461 , B01J35/002 , C01B39/023 , C01B39/46 , C01B39/48
Abstract: A family of new crystalline molecular sieves designated SSZ-91 is 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.
Abstract translation: 公开了一系列新的结晶分子筛SSZ-91。 分子筛SSZ-91在结构上类似于落在ZSM-48族分子筛内的筛，其特征在于：（1）具有低断层程度，（2）与常规的相比，抑制加氢裂化的低纵横比 长径比大于8的ZSM-48材料和（3）基本上是相纯的。
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公开(公告)号：US20170056868A1
公开(公告)日：2017-03-02
申请号：US14837071
申请日：2015-08-27
Applicant: Chevron U.S.A. Inc.
Inventor： Adeola Florence Ojo , Dan Xie , Yihua Zhang , Guan-Dao Lei
CPC classification number: C01B39/023 , B01J29/7023 , B01J29/703 , B01J29/7034 , B01J29/7446 , B01J29/7461 , B01J29/80 , B01J35/002 , C01B39/46 , C01B39/48 , C01P2004/54
Abstract: A family of new crystalline molecular sieves designated SSZ-91 is 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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Patent Agency Ranking
公开(公告)号：US11987757B2
公开(公告)日：2024-05-21
申请号：US17138260
申请日：2020-12-30
Applicant: CHEVRON U.S.A. INC.
Inventor： Kamala R. Krishna , Yihua Zhang , Guan-Dao Lei , Adeola Florence Ojo
CPC classification number: C10G11/05 , B01J29/703 , C10G3/44 , B01J2231/648 , C10G2300/1014 , C10G2400/04
Abstract: Described herein are processes for hydroisomerising an unconventional feedstock using a hydroisomerisation catalyst comprising zeolite SSZ-91, zeolite SSZ-32, or zeolite SSZ-32x to provide a diesel fuel.
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公开(公告)号：US11873455B2
公开(公告)日：2024-01-16
申请号：US17138038
申请日：2020-12-30
Applicant: Chevron U.S.A. Inc.
Inventor： Kenny 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：US11679987B2
公开(公告)日：2023-06-20
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: B01J29/06 , C01B39/02 , B01J29/74 , C01B39/46 , B01J29/70 , B01J29/80 , B01J35/00 , C01B39/48 , B01J29/72 , B01J29/76 , C07C5/13
CPC classification number: C01B39/023 , B01J29/703 , B01J29/7023 , B01J29/7034 , B01J29/7246 , B01J29/7261 , B01J29/7446 , B01J29/7461 , B01J29/7646 , B01J29/7661 , B01J29/80 , B01J35/002 , C01B39/46 , C01B39/48 , C01P2002/72 , C01P2004/54 , C07C5/13 , C07C2529/72 , C07C2529/74 , C07C2529/76
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：US20220204874A1
公开(公告)日：2022-06-30
申请号：US17138009
申请日：2020-12-30
Applicant: Chevron U.S.A. Inc.
Inventor： Kenny Peinado , Jay Parekh , Jifei Jia , Yihua Zhang , Guan-Dao Lei , Guang Zhang
IPC: C10G67/02 , C10M177/00 , C10M101/02
Abstract: Provided in one embodiment is an improved and more flexible process for preparing a finished base oil or a white oil product comprising passing a dewaxed base oil product to a distillation column and separating the dewaxed base oil product into fuel and base oil product streams. The base oil product streams are tested to determine if they meet desired specifications. Base oil product streams that meet the desired minimum base oil specifications are passed to a hydrofinishing reactor to prepare a white oil product, or passed to direct sale.
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公开(公告)号：US11229903B1
公开(公告)日：2022-01-25
申请号：US17138068
申请日：2020-12-30
Applicant: Chevron U.S.A. Inc.
Inventor： Yihua Zhang , Adeola Florence Ojo , Guan-Dao Lei
IPC: B01J29/70 , B01J37/04 , C10G45/64 , B01J21/04 , B01J23/10 , B01J23/89 , B01J23/83 , B01J23/63 , B01J35/02 , B01J37/08
Abstract: A method for making a hydroisomerization catalyst having improved thermal stability and metal dispersion characteristics, the catalyst prepared therefrom, and a process for making a base oil product using the catalyst are disclosed. The catalyst is prepared from a composition comprising an SSZ-91 molecular sieve and a rare earth modified alumina, with the composition being modified to contain a Group 8-10 metal, typically through impregnation of a Group 8-10 metal composition. The catalyst may be used to produce dewaxed base oil products by contacting the catalyst under hydroisomerization conditions with a hydrocarbon feedstock.
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