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：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

IPC: B01J27/188 ,  B01J23/75 ,  B01J37/02 ,  B01J37/08 ,  B01J35/10 ,  C10G2/00

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：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.