1
Mark O Scates, George A Blay, G Paull Torrence, Jerry A Broussard: Low energy carbonylation process. Celanese International Corporation, James J Mullen, December 2, 2003: US06657078 (212 worldwide citation)

A low energy process for producing acetic acid by the carbonylation of methanol is disclosed. The process involves a rhodium-catalyzed system operated at less than about 14% water utilizing up to 2 distillation columns. The process is preferably controlled such that the product stream has a low leve ...


2
Victor J Johnston, Josefina T Chapman, Laiyuan Chen, Barbara F Kimmich, James H Zink, Jan Cornelis van der Waal, Virginie Zuzaniuk: Ethanol production from acetic acid utilizing a cobalt catalyst. Celanese International Corporation, Michael W Ferrell, October 27, 2009: US07608744 (171 worldwide citation)

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 either cobalt and palladium supported on graphite ...


3
Hosea Cheung, Michael E Huckman, G Paull Torrence: Low water methanol carbonylation process for high acetic acid production and for water balance control. Celanese International Corporation, M Susan Spiering, February 28, 2006: US07005541 (149 worldwide citation)

The invention relates to a process for the production of acetic acid by carbonylation of methanol, and reactive derivatives thereof, in a reaction mixture using a rhodium-based catalyst in low water conditions. The process is used to achieve reaction rates of at least 15 g mol/l/hr. The high rate re ...


4
Victor J Johnston, Laiyuan Chen, Barbara F Kimmich, Josefina T Chapman, James H Zink: Direct and selective production of ethanol from acetic acid utilizing a platinum/tin catalyst. Celanese International Corporation, January 4, 2011: US07863489 (140 worldwide citation)

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, ...


5
Hung Cheun Cheung, Valerie Santillan, Mark O Scates, Elaine C Sibrel, G Paull Torrence: Method and apparatus for sequesting entrained and volatile catalyst species in a carbonylation process. Celanese International Corporation, M Susan Spiering, September 30, 2003: US06627770 (140 worldwide citation)

A method and apparatus for sequestering entrained or volatile catalyst species in a carbonylation process includes contacting the product stream with a vinyl pyridine or a vinyl pyrrolidone resin bed which is operative to sequester entrained or volatile catalytic species. The invention is particular ...


6
Mark O Scates, David A Trueba: Process for producing acetic acid. Celanese International Corporation, Howrey, April 24, 2007: US07208624 (137 worldwide citation)

An improved process is disclosed for producing acetic acid, including the following steps: reacting a carbonylatable reactant such as methanol, methyl acetate, methyl formate or dimethyl ether with carbon monoxide in a reaction medium containing water, methyl iodide, and a catalyst to produce a reac ...


7
Kimberly Ann Horan, Carl David Murphy, Russell Mark Stephens, R Jay Warner, Kenneth Allen Windhorst: Process improvement for continuous ethyl acetate production. Celanese International Corporation, M Susan Spiering, July 27, 2004: US06768021 (123 worldwide citation)

Disclosed herein is an improved process for producing ethyl acetate comprising contacting acetic acid and ethanol in a reaction zone in the presence of an acid catalyst, distilling formed vapors and condensing to form an organic phase rich in ethyl acetate and an aqueous phase rich in water, separat ...


8
Wayne David Picard, Mark O Scates, Stephen Charles Webb, Duane Lyle Usrey: Integrated process for producing carbonylation acetic acid, acetic anhydride, or coproduction of each from a methyl acetate by-product stream. Celanese International Corporation, M Susan Spiering, October 3, 2006: US07115772 (118 worldwide citation)

The present invention is directed to using methyl acetate from a vinyl acetate-based or a vinyl-or ethylene-alcohol based polymer or copolymer process directly for use in a methanol carbonylation production process to produce acetic acid, acetic anhydride, or a coproduction of each. Methyl acetate i ...


9
James L Gaddy, Edgar C Clausen, Ching Whan Ko, Leslie E Wade, Carl V Wikstrom: Microbial process for the preparation of acetic acid as well as solvent for its extraction from the fermentation broth. Bioengineering Resources, Celanese International Corporation, Howson and Howson, April 9, 2002: US06368819 (99 worldwide citation)

A modified water-immiscible solvent useful in the extraction of acetic acid from aqueous streams is a substantially pure mixture of isomers of highly branched di-alkyl amines. This solvent is substantially devoid of mono-alkyl amines and alcohols. Solvent mixtures formed of such a modified solvent w ...


10
R Jay Warner, Carl David Murphy, Gustavo Angel Robelo Grajales, Francisco Javier Sanchez Santiago, Fernando Alejo Solorzano, Jose Alfonso Torres: Process for the simultaneous coproduction and purification of ethyl acetate and isopropyl acetate. Celanese International Corporation, M Susan Spiering, July 20, 2004: US06765110 (93 worldwide citation)

This invention relates to a process for the simultaneous coproduction of ethyl acetate and isopropyl acetate. The esterification reaction comprises contacting acetic acid with a mixed alcohol stream of ethanol and isopropanol. Exemplified is a purified, Fischer Tropsch derived mixture of ethanol and ...



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