-
公开(公告)号：US20170354960A1
公开(公告)日：2017-12-14
申请号：US15182093
申请日：2016-06-14
Applicant: Chevron U.S.A. Inc.
Inventor： Kandaswamy Jothimurugesan , Howard Steven Lacheen , Mark Muraoka
IPC: B01J27/198 , B01J37/16 , B01J37/08 , C10G2/00 , B01J37/02
CPC classification number: B01J27/198 , B01J37/0215 , B01J37/08 , B01J37/16 , C10G2/333
Abstract: A process has been developed for preparing a Fischer-Tropsch catalyst precursor and a Fischer-Tropsch catalyst made from the precursor. The process includes preparing a catalyst precursor by contacting a boehmite material with a stabilizer containing vanadium-phosphorus. The boehmite material includes two or more different crystalline boehmites having the same average crystallite size to the nearest whole nanometer and having differing properties selected from surface area, pore volume, density and combinations thereof. The boehmite material is subjected to at least one heat treatment at a temperature of at least 500° C., either before or after the contacting step to obtain a stabilized catalyst support having a pore volume of at least 0.3 cc/g. A catalytic metal or a compound containing cobalt is applied to the stabilized catalyst support to form the catalyst precursor. Finally, the catalyst precursor is reduced to activate the catalyst precursor to obtain the Fischer Tropsch catalyst. The catalyst has enhanced hydrothermal stability as measured by losing no more than 6% of its pore volume when exposed to water vapor.
-
2.发明申请公开(公告)号：US20160089662A1
公开(公告)日：2016-03-31
申请号：US14961998
申请日：2015-12-08
Applicant: Chevron U.S.A. Inc.
Inventor： Kandaswamy Jothimurugesan , Howard Steven Lacheen
IPC: B01J27/198 , B01J35/02
CPC classification number: B01J27/198 , B01J21/04 , B01J35/002 , B01J35/0053 , B01J35/023 , B01J35/1038 , B01J37/0203 , B01J37/0207 , B01J37/0236 , B01J37/024 , B01J37/0244 , B01J37/08 , B01J37/18 , C10G2/332
Abstract: A process has been developed for preparing a Fischer-Tropsch catalyst precursor and a Fischer-Tropsch catalyst made from the precursor. The process includes contacting an alumina catalyst support material with a first solution containing a vanadium compound and a phosphorus compound, to obtain a modified catalyst support material. The modified catalyst support material is calcined at a temperature of at least 500° C. The calcined modified catalyst support has a pore volume of at least 0.4cc/g. The modified catalyst support is less soluble in acid solutions than an equivalent unmodified catalyst support. The modified catalyst support is contacted with a second solution which includes a precursor compound of an active cobalt catalyst component and an organic compound, preferably glutaric acid, to obtain a catalyst precursor. The catalyst precursor is reduced to activate the catalyst precursor to obtain the Fischer-Tropsch catalyst. The catalyst has enhanced hydrothermal stability as measured by losing no more than 10% of its pore volume when exposed to water vapor. The catalyst has Co3O4 crystallites having an average size of no greater than 20 nm. As a result, the catalyst has good activity.
Abstract translation: 已经开发了制备费 - 托催化剂前体和由前体制备的费 - 托催化剂的方法。 该方法包括使氧化铝催化剂载体材料与含有钒化合物和磷化合物的第一溶液接触，以获得改性的催化剂载体材料。 经修饰的催化剂载体材料在至少500℃的温度下煅烧。煅烧的改性催化剂载体的孔体积至少为0.4cc / g。 改性的催化剂载体在酸溶液中比相当的未改性的催化剂载体更难溶解。 改性的催化剂载体与包含活性钴催化剂组分的前体化合物和有机化合物，优选戊二酸的第二溶液接触，以获得催化剂前体。 催化剂前体被还原以活化催化剂前体以获得费 - 托催化剂。 催化剂具有增强的水热稳定性，当暴露于水蒸气时，其通过损失不超过其孔体积的10％来测量。 催化剂具有平均粒度不大于20nm的Co 3 O 4微晶。 结果，催化剂具有良好的活性。
-
公开(公告)号：US10947458B1
公开(公告)日：2021-03-16
申请号：US16822223
申请日：2020-03-18
Applicant: CHEVRON U.S.A. INC.
Inventor： Tengfei Liu , Mingting Xu , Kandaswamy Jothimurugesan , Richard Grove , Michael K. Maholland , Michelle Young , Winnie Lieu , Cameron McCord
IPC: C10G11/02
Abstract: A process is provided for upgrading a renewable feedstock. The process includes introducing the renewable feedstock into a fluid catalytic cracking (FCC) reactor unit operating under catalytic cracking conditions and comprising a circulating inventory of an equilibrium catalyst composition; removing a portion of the equilibrium catalyst inventory from the FCC reactor unit while replacing all the equilibrium catalyst removed from the unit with a spent catalyst to obtain a composite circulating catalyst within the FCC reactor unit; and contacting the composite circulating catalyst with the renewable feedstock in the FCC reactor unit under a steady state environment to provide a product stream comprising cracked products.
-
公开(公告)号：US12215036B2
公开(公告)日：2025-02-04
申请号：US18344530
申请日：2023-06-29
Applicant: Chevron U.S.A. Inc.
Inventor： Kandaswamy Jothimurugesan , Hye-Kyung Timken
Abstract: A process of making a silica-alumina composition having improved properties is provided. The process includes (a) mixing an aqueous solution of a silicon compound and an aqueous solution of an aluminum compound and an acid, while maintaining a pH of the mixed solution in a range of 1 to 3, and obtaining an acidified silica-alumina sol; (b) adding an aqueous solution of a base precipitating agent to the acidified silica-alumina sol to a final pH in a range of 5 to 8, and co-precipitating a silica-alumina slurry, wherein the base precipitating agent is selected from ammonium carbonate, ammonium bicarbonate, and any combination thereof; (c) optionally, hydrothermally aging the silica-alumina slurry to form a hydrothermally aged silica-alumina slurry; and (d) recovering a precipitate solid from the silica-alumina slurry or the hydrothermally aged silica-alumina slurry, wherein the precipitate solid comprises the silica-alumina composition.
-
公开(公告)号：US11787701B2
公开(公告)日：2023-10-17
申请号：US17382441
申请日：2021-07-22
Applicant: CHEVRON U.S.A. INC.
Inventor： Kandaswamy Jothimurugesan , Hye-Kyung Timken
CPC classification number: C01F7/34 , B01J21/12 , B01J35/1019 , B01J35/1047 , B01J35/1061 , B01J37/031 , B01J37/04 , C01P2002/72 , C01P2006/12 , C01P2006/14 , C01P2006/16
Abstract: A process of making a silica-alumina composition having improved properties is provided. The process includes (a) mixing an aqueous solution of a silicon compound and an aqueous solution of an aluminum compound and an acid, while maintaining a pH of the mixed solution in a range of 1 to 3, and obtaining an acidified silica-alumina sol; (b) adding an aqueous solution of a base precipitating agent to the acidified silica-alumina sol to a final pH in a range of 5 to 8, and co-precipitating a silica-alumina slurry, wherein the base precipitating agent is selected from ammonium carbonate, ammonium bicarbonate, and any combination thereof; (c) optionally, hydrothermally aging the silica-alumina slurry to form a hydrothermally aged silica-alumina slurry; and (d) recovering a precipitate solid from the silica-alumina slurry or the hydrothermally aged silica-alumina slurry, wherein the precipitate solid comprises the silica-alumina composition.
-
Patent Agency Ranking
公开(公告)号：US10010877B2
公开(公告)日：2018-07-03
申请号：US15182093
申请日：2016-06-14
Applicant: Chevron U.S.A. Inc.
Inventor： Kandaswamy Jothimurugesan , Howard Steven Lacheen , Mark Muraoka
IPC: B01J21/02 , B01J21/04 , B01J23/75 , B01J27/198 , B01J35/02 , C10G2/00 , B01J37/08 , B01J37/16 , B01J37/02
CPC classification number: B01J27/198 , B01J21/04 , B01J23/22 , B01J23/75 , B01J23/83 , B01J23/8472 , B01J27/1853 , B01J35/006 , B01J35/1014 , B01J35/1019 , B01J35/1038 , B01J35/1042 , B01J35/1061 , B01J37/0203 , B01J37/16 , C10G2/333
Abstract: A process has been developed for preparing a Fischer-Tropsch catalyst precursor and a Fischer-Tropsch catalyst made from the precursor. The process includes preparing a catalyst precursor by contacting a boehmite material with a stabilizer containing vanadium-phosphorus. The boehmite material includes two or more different crystalline boehmites having the same average crystallite size to the nearest whole nanometer and having differing properties selected from surface area, pore volume, density and combinations thereof. The boehmite material is subjected to at least one heat treatment at a temperature of at least 500° C., either before or after the contacting step to obtain a stabilized catalyst support having a pore volume of at least 0.3 cc/g. A catalytic metal or a compound containing cobalt is applied to the stabilized catalyst support to form the catalyst precursor. Finally, the catalyst precursor is reduced to activate the catalyst precursor to obtain the Fischer Tropsch catalyst. The catalyst has enhanced hydrothermal stability as measured by losing no more than 6% of its pore volume when exposed to water vapor.
-
公开(公告)号：US09687826B2
公开(公告)日：2017-06-27
申请号：US14961998
申请日：2015-12-08
Applicant: Chevron U.S.A. Inc.
Inventor： Kandaswamy Jothimurugesan , Howard Steven Lacheen
CPC classification number: B01J27/198 , B01J21/04 , B01J35/002 , B01J35/0053 , B01J35/023 , B01J35/1038 , B01J37/0203 , B01J37/0207 , B01J37/0236 , B01J37/024 , B01J37/0244 , B01J37/08 , B01J37/18 , C10G2/332
Abstract: Provided is a Fischer Tropsch catalyst prepared according to a process comprising: a. preparing a catalyst precursor by: i. impregnating an alumina catalyst support material with a first solution comprising ammonium metavanadate and phosphoric acid, to obtain a treated catalyst support material; ii. calcining the treated catalyst support material at a temperature of at least 500° C. to obtain a modified catalyst support having a modified support surface area and a pore volume of at least 0.4 cc/g; wherein the modified catalyst support loses no more than 8% of the pore volume when exposed to a water vapor; and iii. contacting the modified catalyst support with a second solution comprising a precursor compound of an active cobalt catalyst component and glutaric acid to obtain the catalyst precursor; and b. reducing the catalyst precursor to activate the catalyst precursor to obtain the Fischer Tropsch catalyst.
-
公开(公告)号：US09687825B1
公开(公告)日：2017-06-27
申请号：US15193399
申请日：2016-06-27
Applicant: Chevron U.S.A. Inc.
Inventor： Kandaswamy Jothimurugesan , Mark Muraoka
CPC classification number: B01J27/188 , B01J23/75 , B01J23/8913 , B01J23/894 , B01J35/023 , B01J35/1038 , B01J35/1042 , B01J37/0201 , B01J37/0207 , B01J37/024 , B01J37/08 , B01J37/10 , B01J37/28 , C10G2/332 , C10G2/333
Abstract: A process to make a Fischer-Tropsch catalyst with improved hydrothermal stability, comprising: a. contacting a crystalline oxide material with a solution of a tungsten and a phosphorus to make a tungsten-phosphorus modified support; b. calcining the tungsten-phosphorus modified support at a temperature less than or equal to 750° C. to make a calcined tungsten-phosphorus modified support that has the improved hydrothermal stability and that can be used to support a Co-loaded Fischer-Tropsch catalyst. A Co-loaded Fischer-Tropsch catalyst having improved hydrothermal stability and higher C5+ hydrocarbon productivity is also provided. A Fischer-Tropsch synthesis process is provided, comprising contacting a gaseous mixture comprising a carbon monoxide and a hydrogen with the Co-loaded Fischer-Tropsch catalyst having the improved hydrothermal stability and higher C5+ productivity, at a pressure of from 0.1 to 3 MPa and at a reaction temperature of from 180 to 260° C., thereby producing a product comprising C5+ hydrocarbons.
-
公开(公告)号：US09370768B2
公开(公告)日：2016-06-21
申请号：US14873676
申请日：2015-10-02
Applicant: Chevron U.S.A. Inc.
Inventor： Kandaswamy Jothimurugesan
IPC: B01J27/198 , C10G2/00 , B01J23/89 , B01J37/02 , B01J37/08 , B01J37/18 , B01J37/16 , B01J35/02 , B01J37/14 , B01J35/00 , B01J35/10
CPC classification number: B01J27/198 , B01J23/894 , B01J23/898 , B01J35/0033 , B01J35/023 , B01J35/1019 , B01J35/1038 , B01J35/1042 , B01J37/02 , B01J37/0207 , B01J37/024 , B01J37/08 , B01J37/14 , B01J37/16 , B01J37/18 , B01J2523/00 , C10G2/332 , C10G2/333 , B01J2523/31 , B01J2523/3706 , B01J2523/51 , B01J2523/55 , B01J2523/828 , B01J2523/845
Abstract: A process has been developed for preparing a Fischer-Tropsch catalyst precursor and a Fischer-Tropsch catalyst made from the precursor. The process includes contacting a gamma alumina catalyst support material with a first solution containing a vanadium compound and a phosphorus compound, to obtain a modified catalyst support material. The modified catalyst support material is calcined at a temperature of at least 500° C. The modified catalyst support is less soluble in acid solutions than an equivalent unmodified catalyst support. The modified catalyst support loses no more than 6% of its pore volume when exposed to water vapor. The modified catalyst support is contacted with a second solution which includes a precursor compound of an active cobalt catalyst component to obtain a catalyst precursor. The Fischer-Tropsch catalyst has enhanced hydrothermal stability as measured by losing no more than 10% of its pore volume when exposed to water vapor.
Abstract translation: 已经开发了制备费 - 托催化剂前体和由前体制备的费 - 托催化剂的方法。 该方法包括使γ氧化铝催化剂载体材料与含有钒化合物和磷化合物的第一溶液接触，以获得改性的催化剂载体材料。 改性的催化剂载体材料在至少500℃的温度下煅烧。改性催化剂载体在酸溶液中比相当的未改性的催化剂载体更难溶解。 当暴露于水蒸气时，改性催化剂载体的孔隙体积不超过6％。 将改性的催化剂载体与包含活性钴催化剂组分的前体化合物的第二溶液接触以获得催化剂前体。 费 - 托催化剂具有增强的水热稳定性，当暴露于水蒸汽时，它的损失不超过其孔体积的10％。
-
公开(公告)号：US20160067688A1
公开(公告)日：2016-03-10
申请号：US14873676
申请日：2015-10-02
Applicant: Chevron U.S.A. Inc.
Inventor： Kandaswamy Jothimurugesan
CPC classification number: B01J27/198 , B01J23/894 , B01J23/898 , B01J35/0033 , B01J35/023 , B01J35/1019 , B01J35/1038 , B01J35/1042 , B01J37/02 , B01J37/0207 , B01J37/024 , B01J37/08 , B01J37/14 , B01J37/16 , B01J37/18 , B01J2523/00 , C10G2/332 , C10G2/333 , B01J2523/31 , B01J2523/3706 , B01J2523/51 , B01J2523/55 , B01J2523/828 , B01J2523/845
Abstract: A process has been developed for preparing a Fischer-Tropsch catalyst precursor and a Fischer-Tropsch catalyst made from the precursor. The process includes contacting a gamma alumina catalyst support material with a first solution containing a vanadium compound and a phosphorus compound, to obtain a modified catalyst support material. The modified catalyst support material is calcined at a temperature of at least 500° C. The modified catalyst support is less soluble in acid solutions than an equivalent unmodified catalyst support. The modified catalyst support loses no more than 6% of its pore volume when exposed to water vapor. The modified catalyst support is contacted with a second solution which includes a precursor compound of an active cobalt catalyst component to obtain a catalyst precursor. The Fischer-Tropsch catalyst has enhanced hydrothermal stability as measured by losing no more than 10% of its pore volume when exposed to water vapor.
Abstract translation: 已经开发了制备费 - 托催化剂前体和由前体制备的费 - 托催化剂的方法。 该方法包括使γ氧化铝催化剂载体材料与含有钒化合物和磷化合物的第一溶液接触，以获得改性的催化剂载体材料。 改性的催化剂载体材料在至少500℃的温度下煅烧。改性的催化剂载体在酸溶液中比相当的未改性的催化剂载体更难溶解。 当暴露于水蒸气时，改性催化剂载体的孔隙体积不超过6％。 将改性的催化剂载体与包含活性钴催化剂组分的前体化合物的第二溶液接触以获得催化剂前体。 费 - 托催化剂具有增强的水热稳定性，当暴露于水蒸汽时，它的损失不超过其孔体积的10％。
-
-
-
-
-
-
-
-
-
Search Results
10
records
(took 0.022 seconds)
