Celanese International Corporation

Celanese Acetate Limited

Xiaoyan Tu

Michael Combs

Victor J Johnston

Heiko Weiner

Zhenhua Zhou

Dheeraj Kumar

Radmila Wollrab

Lawton E Kizer

Thomas S Garrett

Denis G Fallon

Rongfu Li

Yi (Julie) Li

Chad Prunesti

Martin Jakob

Jay Mehta

Prabuddha Bansal

Radmila Jevtic

The present invention relates to catalysts, to processes for making catalysts and to chemical processes employing such catalysts. The catalysts are preferably used for converting acetic acid to ethanol. The catalyst comprises a precious metal and one or more active metals on a modified support. The modified support may comprise cobalt tungstate.

Process for producing ethanol using hydrogenation catalysts

Wood laminates may comprise a plurality of wood substrates and an adhesive disposed between at least a portion of at least two of the wood substrates, the adhesive comprising a substituted cellulose ester that comprises a cellulose polymer backbone having an organic ester substituent and an inorganic ester substituent that comprises an inorganic, nonmetal atom selected from the group consisting of sulfur, phosphorus, boron, and chlorine. In some instances the adhesive may be substantially formaldehyde-free.

Wood laminate articles comprising substituted cellulose ester adhesives and methods relating thereto

Engineered wood may be produced with substituted cellulose ester adhesives. For example, an engineered wood may comprise a plurality of wood substrates that independently comprise a lignin-containing material (e.g., wood dust, wood particles, wood chips, and the like), the plurality of wood substrates being adhered together with an adhesive that comprises a substituted cellulose ester that comprises a cellulose polymer backbone having an organic ester substituent and an inorganic ester substituent that comprises an inorganic, nonmetal atom selected from the group consisting of sulfur, phosphorus, boron, and chlorine.

Engineered wood produced with substituted cellulose ester adhesives and methods relating thereto

A hydrogenation catalyst and process using the catalyst for converting a mixture comprising acetic acid and ethyl acetate to ethanol at a first temperature, and the catalyst desorbs ethyl acetate, in the absence of hydrogen, at a second temperature that is greater than the first temperature. The catalyst has a suitable chemisorption of ethyl acetate at the first temperature in the absence of hydrogen. In one embodiment, the first temperature ranges from 125&#xb0; C. to 350&#xb0; C. and the second temperature ranges from 300&#xb0; C. to 600&#xb0; C. The catalyst comprises one or more active metals or oxide thereof on a support that comprises tungsten or an oxide thereof. The one or more active metals are selected from the group consisting of cobalt, copper, gold, iron, nickel, palladium, platinum, iridium, osmium, rhenium, rhodium, ruthenium, tin, zinc, lanthanum, cerium, manganese, chromium, vanadium, and molybdenum.

Chemisorption of ethyl acetate during hydrogenation of acetic acid to ethanol

A method for treating a cellulosic material comprising extracting the cellulosic material with an extractant to selectively extract hemicellulose therein and separating the extracted hemicellulose to form a cellulosic product comprising less hemicellulose than the cellulosic material. The extractant comprises an amine oxide and a non-solvent. The cellulosic product retains the cellulosic fiber morphology.

Methods for removing hemicellulose

Hydrogenation catalysts

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Blacksburg, VA, United States of America

Xiaoyan Tu