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Zhigang J Zhang, 6110503 Mersham Hill Dr, Bakersfield, CA 93311

Zhigang Zhang Phones & Addresses

10503 Mersham Hill Dr, Bakersfield, CA 93311    661-6633750   

300 Coffee Rd, Bakersfield, CA 93309    661-8371995   

4642 Arrowhead Rd, Okemos, MI 48864   

803 Cherry Ln, East Lansing, MI 48823   

Rancho Cordova, CA   

Lafayette, LA   

Mentions for Zhigang J Zhang

Zhigang Zhang resumes & CV records

Resumes

Zhigang Zhang Photo 33

Zhigang Zhang

Zhigang Zhang Photo 34

Zhigang Zhang

Zhigang Zhang Photo 35

Zhigang Zhang

Location:
Other
Industry:
Wine and Spirits
Languages:
Chinese

Publications & IP owners

Us Patents

Condensed Phase Catalytic Hydrogenation Of Lactic Acid To Propylene Glycol

US Patent:
6403844, Jun 11, 2002
Filed:
Nov 19, 1999
Appl. No.:
09/442285
Inventors:
Zhigang Zhang - East Lansing MI
Dennis J. Miller - Okemos MI
James E. Jackson - Haslett MI
Assignee:
Board of Trustees of Michigan State University - East Lansing MI
International Classification:
C07C 2700
US Classification:
568864, 502261, 502326
Abstract:
The present invention provides a process for production of propylene glycol with high yield and selectivity in an aqueous reaction mixture of lactic acid and hydrogen with an essentially pure elemental ruthenium catalyst on an inert support at elevated pressure and temperature. In particular, the present invention provides a process wherein the catalyst is a ruthenium salt deposited on a microporous support, reduced to ruthenium on the support with hydrogen, and oxidized in the presence of oxygen to provide a ruthenium oxide surface on the surface of the ruthenium metal and wherein the catalyst is maintained in the surface oxidized state until it is reduced with hydrogen prior to the reaction process.

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