John R Potts

US Patent:

8080694, Dec 20, 2011

Filed:

Jun 30, 2011

Appl. No.:

13/173190

Inventors:

Heiko Weiner - Pasadena TX, US
Victor J. Johnston - Houston TX, US
John L. Potts - Angleton TX, US
Radmila Jevtic - Pasadena TX, US

Assignee:

Celanese International Corporation - Dallas TX

International Classification:

C07C 29/149

US Classification:

568885

Abstract:

A process for selective formation of ethanol from acetic acid includes contacting a feed stream containing acetic acid and hydrogen at an elevated temperature with catalyst comprising platinum and tin on a high surface area silica promoted with calcium metasilicate. Selectivities to ethanol of over 85% are achieved at 280 C. with catalyst life in the hundreds of hours.

US Patent:

8309772, Nov 13, 2012

Filed:

Oct 26, 2009

Appl. No.:

12/588727

Inventors:

Heiko Weiner - Pasadena TX, US
Victor J. Johnston - Houston TX, US
John L. Potts - Angleton TX, US
Radmila Jevtic - Houston TX, US

Assignee:

Celanese International Corporation - Dallas TX

International Classification:

C07C 29/149

US Classification:

568885

Abstract:

A process for selective formation of ethanol from acetic acid includes contacting a feed stream containing acetic acid and hydrogen at an elevated temperature with catalyst comprising platinum and tin on a high surface area silica promoted with calcium metasilicate. Selectivities to ethanol of over 85% are achieved at 280 C. with catalyst life in the hundreds of hours.

US Patent:

8338650, Dec 25, 2012

Filed:

Apr 4, 2011

Appl. No.:

13/079700

Inventors:

Victor J. Johnston - Houston TX, US
Barbara Kimmich - Bernardsville NJ, US
John Potts - Angleton TX, US
Heiko Weiner - Pasadena TX, US
James H. Zink - League City TX, US
Josefina T. Chapman - Houston TX, US
Laiyuan Chen - Houston TX, US
Radmila Jevtic - Pasadena TX, US

Assignee:

Celanese International Corporation - Dallas TX

International Classification:

C07C 29/149

US Classification:

568885

Abstract:

Catalysts and processes for forming catalysts for use in hydrogenating acetic acid to form ethanol. The catalyst comprises palladium and chromium on a support.

US Patent:

8471075, Jun 25, 2013

Filed:

Feb 2, 2010

Appl. No.:

12/698947

Inventors:

Victor J. Johnston - Houston TX, US
Laiyuan Chen - Houston TX, US
Barbara F. Kimmich - Bernardsville NJ, US
Josefina T. Chapman - Houston TX, US
James H. Zink - League City TX, US
Heiko Weiner - Pasadena TX, US
John L. Potts - Angleton TX, US
Radmila Jevtic - Houston TX, US

Assignee:

Celanese International Corporation - Dallas TX

International Classification:

C07C 29/132

US Classification:

568861, 568700, 568864, 568883, 568890

Abstract:

A process for selective formation of ethanol from acetic acid by hydrogenating acetic acid in the presence of first metal, a silicaceous support, and at least one support modifier. Preferably, the first metal is selected from the group consisting of copper, iron, cobalt, nickel, ruthenium, rhodium, palladium, osmium, iridium, platinum, titanium, zinc, chromium, rhenium, molybdenum, and tungsten. In addition the catalyst may comprise a second metal preferably selected from the group consisting of copper, molybdenum, tin, chromium, iron, cobalt, vanadium, tungsten, palladium, platinum, lanthanum, cerium, manganese, ruthenium, rhenium, gold, and nickel.

US Patent:

8501652, Aug 6, 2013

Filed:

Feb 2, 2010

Appl. No.:

12/698968

Inventors:

Victor J. Johnston - Houston TX, US
Laiyuan Chen - Houston TX, US
Barbara F. Kimmich - Bernardsville NJ, US
Josefina T. Chapman - Houston TX, US
James H. Zink - League City TX, US
Heiko Weiner - Pasadena TX, US
John L. Potts - Angleton TX, US
Radmila Jevtic - Houston TX, US

Assignee:

Celanese International Corporation - Dallas TX

International Classification:

B01J 23/652

US Classification:

502100, 502214, 568700, 568865, 568885, 585324

Abstract:

Catalysts and processes for forming catalysts for use in hydrogenating acetic acid to form ethanol. In one embodiment, the catalyst comprises a first metal, a silicaceous support, and at least one metasilicate support modifier. Preferably, the first metal is selected from the group consisting of copper, iron, cobalt, nickel, ruthenium, rhodium, palladium, osmium, iridium, platinum, titanium, zinc, chromium, rhenium, molybdenum, and tungsten. In addition the catalyst may comprise a second metal preferably selected from the group consisting of copper, molybdenum, tin, chromium, iron, cobalt, vanadium, tungsten, palladium, platinum, lanthanum, cerium, manganese, ruthenium, rhenium, gold, and nickel.

US Patent:

8575404, Nov 5, 2013

Filed:

Apr 1, 2011

Appl. No.:

13/078727

Inventors:

Radmila Jevtic - Pasadena TX, US
Victor J. Johnston - Houston TX, US
R. Jay Warner - Houston TX, US
John Potts - Angleton TX, US
Stephen Kerlegon - League City TX, US

Assignee:

Celanese International Corporation - Dallas TX

International Classification:

C07C 29/149

US Classification:

568885

Abstract:

Monitoring and recycling gases from acetic acid hydrogenation reaction to maintain a constant pressure in the hydrogenation reaction system. Purging of the vapor stream comprising hydrogen may be limited or reduced. Further purging of the by-product may be from the dissolved by-product gases.

US Patent:

20100197486, Aug 5, 2010

Filed:

Feb 2, 2010

Appl. No.:

12/699029

Inventors:

Victor J. Johnston - Houston TX, US
Laiyuan Chen - Houston TX, US
Barbara F. Kimmich - Bernardsville NJ, US
Josefina T. Chapman - Houston TX, US
James H. Zink - League City TX, US
Heiko Weiner - Pasadena TX, US
John L. Potts - Angleton TX, US
Radmila Jevtic - Houston TX, US

Assignee:

CELANESE INTERNATIONAL CORPORATION - Dallas TX

International Classification:

B01J 23/62
B01J 21/08
B01J 23/68

US Classification:

502241, 502242

Abstract:

Catalysts and processes for making catalysts suitable for use in processes for hydrogenating acetic acid to form of ethyl acetate and mixtures of ethyl acetate and ethanol. In a first embodiment, the catalyst includes a high loading of nickel, palladium or platinum. In a second embodiment, the catalyst comprises a first metal selected from nickel and palladium and a second metal selected from tin and zinc. In a third embodiment, the catalyst comprises one or more metals on a support that has been modified with an acidic support modifier or a redox support modifier.

US Patent:

20100197959, Aug 5, 2010

Filed:

Feb 2, 2010

Appl. No.:

12/699024

Inventors:

Victor J. Johnston - Houston TX, US
Laiyuan Chen - Houston TX, US
Barbara F. Kimmich - Bernardsville NJ, US
Josefina T. Chapman - Houston TX, US
James H. Zink - League City TX, US
Heiko Weiner - Pasadena TX, US
John L. Potts - Angleton TX, US
Radmila Jevtic - Houston TX, US

Assignee:

CELANESE INTERNATIONAL CORPORATION - Dallas TX

International Classification:

C07C 1/213
C07C 67/00
C09K 3/00

US Classification:

560265, 585640, 25218211

Abstract:

A process for hydrogenating acetic acid to form of ethyl acetate and mixtures of ethyl acetate and ethanol. The hydrogenation is done in the presence of catalyst, preferably on a support that optionally includes a support modifier.