Darren P Fong

US Patent:

7141529, Nov 28, 2006

Filed:

Mar 21, 2003

Appl. No.:

10/393817

Inventors:

Joseph A. Biscardi - Berkeley CA, US
Darren P. Fong - Oakland CA, US
Paul Marcantonio - San Rafael CA, US

Assignee:

Chevron U.S.A. Inc. - San Ramon CA

International Classification:

B01J 27/182

US Classification:

502214, 502 74, 502 66

Abstract:

The invention is directed to a method of making a catalyst comprising an intermediate pore size molecular sieve, preferably a zeolite of the MTT or TON type. SSZ-32 and ZSM-22 are examples of such molecular sieves. This catalyst is modified with a metal or metals selected from the group consisting of Ca, Cr, Mg, La, Ba, Pr, Sr, K and Nd. The catalyst is additionally loaded with a Group VII metal or metals for hydrogenation purposes. The catalyst is suitable for use in a process whereby a feed including straight chain and slightly branched paraffins having 10 or more carbon atoms is isomerized.

US Patent:

7390394, Jun 24, 2008

Filed:

Dec 13, 2004

Appl. No.:

11/012051

Inventors:

Joseph A. Biscardi - Berkeley CA, US
Darren P. Fong - Oakland CA, US
Paul Marcantonio - San Rafael CA, US

Assignee:

Chevron U.S.A. Inc. - San Ramon CA

International Classification:

C10G 45/58

US Classification:

208 89, 208 88, 208108

Abstract:

The invention is directed to a method of making a catalyst comprising an intermediate pore size molecular sieve, preferably a zeolite of the MTT or TON type. SSZ-32 and ZSM-22 are examples of such molecular sieves. This catalyst is modified with a metal or metals selected from the group consisting of Ca, Cr, Mg, La, Ba, Pr, Sr, K and Nd. The catalyst is additionally loaded with a Group VIII metal or metals for hydrogenation purposes. The catalyst is suitable for use in a process whereby a feed including straight chain and slightly branched paraffins having 10 or more carbon atoms is isomerized.

US Patent:

7803735, Sep 28, 2010

Filed:

Oct 28, 2008

Appl. No.:

12/259507

Inventors:

Theodorus Ludovicus Michael Maesen - Richmond CA, US
Alexander E. Kuperman - Ornida CA, US
Darren Fong - Oakland CA, US

Assignee:

Chevron U.S.A. Inc. - San Ramon CA

International Classification:

B01J 27/045
B01J 27/047
B01J 27/14
B01J 27/24
B01J 31/00

US Classification:

502216, 502152, 502168, 502170, 502208, 502209, 502210, 502211, 502213, 502219, 502220, 502221, 502222, 502223

Abstract:

A catalyst precursor composition and methods for making such catalyst precursor are disclosed. The catalyst precursor comprises at least a metal compound selected from Group VIII, Group IIB, Group IIA, Group IVA and combinations thereof, at least one Group VIB metal, at least one organic, oxygen-containing ligand, and a cellulose-containing material. Catalysts prepared from the sulfidation of such catalyst precursors are used in the hydroprocessing of hydrocarbon feeds. In one embodiment, the sulfidation is carried out by contacting the catalyst precursor with hydrogen and a sulfur containing compound in a “slow” process with the sulfidation taking place over a few days up to two weeks, e. g. , for at least over 96 hours. In another embodiment, the sulfidation is in a “quick” process with the sulfidation taking place in less than 72 hours.

US Patent:

7931799, Apr 26, 2011

Filed:

Apr 29, 2009

Appl. No.:

12/432723

Inventors:

Dennis Dykstra - Pinole CA, US
Alexander E. Kuperman - Orinda CA, US
Theodorus Maesen - Richmond CA, US
Soy Uckung - Richmond CA, US
Darren Fong - Oakland CA, US

Assignee:

Chevron U.S.A. Inc. - San Ramon CA

International Classification:

C10G 47/06
C10G 45/04
C10G 45/08

US Classification:

208112, 208143, 208216 R, 208216 PP, 208217, 208251 H, 208254 H

Abstract:

A process for preparing a bulk multi-metallic catalyst for hydrotreating heavy oil feeds is provided. The catalyst is particularly suitable for hydrotreating heavy oil feeds having a boiling point in the range of 343 C. (650 F. )- to 454 C. (850 F. ), an average molecular weight Mn ranging from 300 to 400, and an average molecular diameter ranging from 0. 9 nm to 1. 7 nm. The bulk multi-metallic catalyst is prepared by sulfiding a catalyst precursor that has an essentially monomodal pore volume distribution with at least 95% of the pores being macropores, and having a total pore volume of at least 0. 08 g/cc.

US Patent:

7964525, Jun 21, 2011

Filed:

Apr 29, 2009

Appl. No.:

12/432721

Inventors:

Dennis Dykstra - Pinole CA, US
Theodorus Maesen - Richmond CA, US
Alexander E. Kuperman - Orinda CA, US
Soy Uckung - Richmond CA, US
Darren Fong - Oakland CA, US

Assignee:

Chevron U.S.A. Inc. - San Ramon CA

International Classification:

B01J 27/04
B01J 27/045
B01J 27/047
B01J 27/051
B01J 27/049
B01J 31/00

US Classification:

502220, 502216, 502219, 502221, 502152, 502168, 502170, 502208, 502209, 502211, 502213, 502233

Abstract:

A stable catalyst with low volumetric shrinkage and a process for making the stable catalyst with low volumetric shrinkage is disclosed. The catalyst is made by sulfiding a catalyst precursor containing at least a Group VIB metal compound; at least a promoter metal compound selected from Group VIII, Group IIB, Group IIA, Group IVA and combinations thereof, having an oxidation state of either +2 or +4; optionally at least a ligating agent; optionally at least a diluent. In the process of making the catalyst, the catalyst precursor is first shaped then heat treated at a temperature of 50 C. to 200 C. for about 15 minutes to 12 hours, wherein the catalyst precursor still has a low (less than 12%) volumetric shrinkage after exposure to a temperature of at least 100 C. for at least 30 minutes, e. g. , in sulfidation or in a hydrotreating reactor.

US Patent:

7964526, Jun 21, 2011

Filed:

Apr 29, 2009

Appl. No.:

12/432728

Inventors:

Theodorus Maesen - Richmond CA, US
Alexander E. Kuperman - Orinda CA, US
Dennis Dykstra - Pinole CA, US
Soy Uckung - Richmond CA, US
Darren Fong - Oakland CA, US

Assignee:

Chevron U.S.A. Inc. - San Ramon CA

International Classification:

B01J 27/04
B01J 27/045
B01J 27/047
B01J 27/051
B01J 27/049
B01J 31/00

US Classification:

502220, 502216, 502219, 502221, 502152, 502168, 502170, 502208, 502209, 502211, 502233, 502213

Abstract:

A method for preparing a bulk multi-metallic suitable for hydrotreating heavy oil feeds is provided. In the process of preparing the catalyst precursor which is subsequently sulfided to form the bulk catalyst, a catalyst precursor filter cake is treated with at least a chelating agent, resulting in a catalyst precursor with optimum porosity with at least 90% of the pores being macropores, and having a total pore volume of at least 0. 12 g/cc.

US Patent:

8058203, Nov 15, 2011

Filed:

Apr 29, 2009

Appl. No.:

12/432727

Inventors:

Dennis Dykstra - Pinole CA, US
Theodorus Maesen - Richmond CA, US
Alexander E. Kuperman - Orinda CA, US
Soy Uckung - Richmond CA, US
Darren Fong - Oakland CA, US

Assignee:

Chevron U.S.A. Inc. - San Ramon CA

International Classification:

B01J 27/04
B01J 27/045
B01J 27/047
B01J 27/051
B01J 27/049
B01J 31/00

US Classification:

502220, 502216, 502219, 502221, 502152, 502168, 502170, 502208, 502209, 502211, 502213, 502223

Abstract:

A method for preparing a bulk multi-metallic suitable for hydrotreating heavy oil feeds is provided. In the process of preparing the catalyst precursor which is subsequently sulfided to form the bulk catalyst, non-agglomerative drying is employed to keep the catalyst precursor from aggregating/clumping, resulting in a catalyst precursor with optimum porosity with at least 90% of the pores being macropores, and having a total pore volume of at least 0. 08 g/cc.

US Patent:

8080492, Dec 20, 2011

Filed:

Apr 29, 2009

Appl. No.:

12/432730

Inventors:

Alexander E. Kuperman - Orinda CA, US
Theodorus Maesen - Richmond CA, US
Dennis Dykstra - Pinole CA, US
Soy Uckung - Richmond CA, US
Darren Fong - Oakland CA, US

Assignee:

Chevron U.S.A. Inc. - San Ramon CA

International Classification:

B01J 27/04
B01J 27/045
B01J 27/047
B01J 27/051
B01J 27/049
B01J 31/00

US Classification:

502161, 502216, 502219, 502220, 502221, 502170, 502152, 502208, 502209, 502211, 502213, 502223

Abstract:

A catalyst precursor for preparing a bulk multi-metallic catalyst upon sulfidation is provided. The precursor has an essentially monomodal pore volume distribution with at least 90% of the pores being macropores, and a total pore volume of at least 0. 08 g/cc. The bulk multi-metallic prepared from the precursor is particularly suitable for hydrotreating heavy oil feeds having a boiling point in the range of 343 C. (650 F. )—to 454 C. (850 F. ), an average molecular weight Mn ranging from 300 to 400, and an average molecular diameter ranging from 0. 9 nm to 1. 7 nm.