James A Zink

US Patent:

7816565, Oct 19, 2010

Filed:

Jul 31, 2008

Appl. No.:

12/221135

Inventors:

Victor J. Johnston - Houston TX, US
James H. Zink - League City TX, US
Laiyuan Chen - Houston TX, US
Barbara F. Kimmich - League City TX, US
Josefina T. Chapman - Houston TX, US
Jan Cornelis van der Waal - Delft, NL
Virginie Zuzaniuk - Krommenie, NL

Assignee:

Celanese International Corporation - Dallas TX

International Classification:

C07C 45/41

US Classification:

568484, 568486

Abstract:

A process for the selective production of acetaldehyde by vapor phase reaction of acetic acid over a hydrogenating catalyst composition to form acetaldehyde is disclosed and claimed. In an embodiment of this invention reaction of acetic acid and hydrogen over platinum and iron supported on silica selectively produces acetaldehyde in a vapor phase at a temperature of about 300 C.

US Patent:

7820852, Oct 26, 2010

Filed:

Jul 31, 2008

Appl. No.:

12/221209

Inventors:

Victor J. Johnston - Houston TX, US
James H. Zink - League City TX, US
Deborah R. Repman - Lake Jackson TX, US
Laiyuan Chen - Houston TX, US
Barbara F. Kimmich - League City TX, US
Josefina T. Chapman - Houston TX, US
Jan Cornelis van der Waal - Delft, NL
Virginie Zuzaniuk - Krommenie, NL

Assignee:

Celanese International Corporation - Dallas TX

International Classification:

C07C 69/02

US Classification:

560231

Abstract:

A process for the selective production of ethyl acetate by vapor phase reaction of acetic acid over a hydrogenating catalyst composition to form ethyl acetate is disclosed and claimed. In an embodiment of this invention reaction of acetic acid and hydrogen over platinum and copper supported on silica selectively produces ethyl acetate in a vapor phase at a temperature of about 250 C.

US Patent:

7820853, Oct 26, 2010

Filed:

Dec 31, 2008

Appl. No.:

12/319121

Inventors:

Victor J. Johnston - Houston TX, US
James H. Zink - League City TX, US
Deborah R. Repman - Lake Jackson TX, US
Barbara F. Kimmich - League City TX, US
Josefina T. Chapman - Houston TX, US
Laiyuan Chen - Houston TX, US

Assignee:

Celanese International Corporation - Dallas TX

International Classification:

C07C 71/00

US Classification:

560261

Abstract:

This invention provides an integrated three step economical process for the production of vinyl acetate monomer (VAM) from acetic acid in the vapor phase. First, acetic acid is selectively hydrogenated over a hydrogenating catalyst composition to form ethyl acetate which is cracked to form ethylene and acetic acid in the second step and in a subsequent step so formed ethylene and acetic acid is reacted with molecular oxygen over a suitable catalyst to form VAM. In an embodiment of this invention reaction of acetic acid and hydrogen over platinum and copper supported on silica selectively produces ethyl acetate in a vapor phase at a temperature of about 250 C. , which is cracked over a NAFION catalyst to form ethylene and acetic acid at a temperature of about 185 C. , which is mixed with molecular oxygen and reacted over a palladium/gold/potassium catalyst supported on titania to form VAM at a temperature of about 150 C. to 170 C.

US Patent:

7855303, Dec 21, 2010

Filed:

Nov 14, 2008

Appl. No.:

12/291949

Inventors:

Victor J. Johnston - Houston TX, US
Laiyuan Chen - Houston TX, US
James H. Zink - League City TX, US
Josefina T. Chapman - Houston TX, US
Barbara F. Kimmich - League City TX, US
Deborah R. Repman - Lake Jackson TX, US

Assignee:

Celanese International Corporation - Dallas TX

International Classification:

C07C 67/00
C07C 67/05

US Classification:

560241, 560243

Abstract:

This invention provides an integrated two stage economical process for the production of vinyl acetate monomer (VAM) from acetic acid in the vapor phase. First, acetic acid is selectively hydrogenated over a hydrogenating catalyst composition to form ethylene either in a single reactor zone or in a dual rector zone wherein the intermediate hydrogenated products are either dehydrated and/or cracked to form ethylene. In a subsequent second stage so formed ethylene is reacted with molecular oxygen and acetic acid over a suitable catalyst to form VAM. In an embodiment of this invention reaction of acetic acid and hydrogen over a hydrogenation catalyst and subsequent reaction over a dehydration catalyst selectively produces ethylene, which is further mixed with acetic acid and molecular oxygen and reacted over a supported palladium/gold/potassium catalyst.

US Patent:

7863489, Jan 4, 2011

Filed:

Jul 31, 2008

Appl. No.:

12/221141

Inventors:

Victor J. Johnston - Houston TX, US
Laiyuan Chen - Houston TX, US
Barbara F. Kimmich - League City TX, US
Josefina T. Chapman - Houston TX, US
James H. Zink - League City TX, US

Assignee:

Celanese International Corporation - Dallas TX

International Classification:

C07C 29/149

US Classification:

568885

Abstract:

A process for the selective production of ethanol by vapor phase reaction of acetic acid over a hydrogenating catalyst composition to form ethanol is disclosed and claimed. In an embodiment of this invention reaction of acetic acid and hydrogen over a platinum and tin supported on silica, graphite, calcium silicate or silica-alumina selectively produces ethanol in a vapor phase at a temperature of about 250 C.

US Patent:

8071806, Dec 6, 2011

Filed:

Dec 2, 2010

Appl. No.:

12/959024

Inventors:

Victor J. Johnston - Houston TX, US
Barbara F. Kimmich - League City TX, US
Deborah R. Repman - Lake Jackson TX, US
James H. Zink - League City TX, US
Josefina T. Chapman - Houston TX, US
Laiyuan Chen - Houston TX, US

Assignee:

Celanese International Corporation - Dallas TX

International Classification:

C07C 67/02

US Classification:

560261

Abstract:

This invention provides an integrated two stage economical process for the production of vinyl acetate monomer (VAM) from acetic acid in the vapor phase. First, acetic acid is selectively hydrogenated over a hydrogenating catalyst composition to form ethylene either in a single reactor zone or in a dual rector zone wherein the intermediate hydrogenated products are either dehydrated and/or cracked to form ethylene. In a subsequent second stage so formed ethylene is reacted with molecular oxygen and acetic acid over a suitable catalyst to form VAM. In an embodiment of this invention reaction of acetic acid and hydrogen over a hydrogenation catalyst and subsequent reaction over a dehydration catalyst selectively produces ethylene, which is further mixed with acetic acid and molecular oxygen and reacted over a supported palladium/gold/potassium catalyst.

US Patent:

8071821, Dec 6, 2011

Filed:

Sep 16, 2010

Appl. No.:

12/884005

Inventors:

Victor J. Johnston - Houston TX, US
Laiyuan Chen - Houston TX, US
Barbara F. Kimmich - League City TX, US
Josefina T. Chapman - Houston TX, US
James H. Zink - League City TX, US

Assignee:

Celanese International Corporation - Dallas TX

International Classification:

C07C 29/149

US Classification:

568885

Abstract:

A process for the selective production of ethanol by vapor phase reaction of acetic acid over a hydrogenating catalyst composition to form ethanol is disclosed and claimed. In an embodiment of this invention reaction of acetic acid and hydrogen over a platinum and tin supported on silica, graphite, calcium silicate or silica-alumina selectively produces ethanol in a vapor phase at a temperature of about 250 C.

US Patent:

8076506, Dec 13, 2011

Filed:

Apr 3, 2007

Appl. No.:

12/226096

Inventors:

Barbara F. M. Kimmich - League City TX, US
Jeremy J. Patt - League City TX, US
Mark O. Scates - Houston TX, US
Ronald D. Shaver - Houston TX, US
James H. Zink - Houston TX, US

Assignee:

Celanese International Corporation - Dallas TX

International Classification:

C07C 51/10
C07C 51/12

US Classification:

562517, 562518, 562519

Abstract:

A process for reducing the aldehyde concentration in a target stream of a carbonylation process is disclosed. More specifically, a process for reducing the aldehyde concentration in an internal process stream or feed stream of a carbonylation process is disclosed. In particular, a process in which a target stream comprising a carbonylatable reactant and a first aldehyde concentration is subjected to a reaction comprising a supported catalyst that comprises at least one Group 8 to Group 11 metal at conditions sufficient to reduce the first aldehyde concentration to a second aldehyde concentration is disclosed.