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Novel method of acid hydrolysis of biomass and the recovery of sugars thereof by solvent extraction

United States Patent Application

20120301948
A1
View the Complete Application at the US Patent & Trademark Office
Lawrence Berkeley National Laboratory - Visit the Technology Transfer and Intellectual Property Management Department Website
The present invention provides for a method of hydrolyzing a cellulose, hemicellulose, or ligno-cellulose comprising: (a) contacting (i) an ionic liquid (IL) or ionic liquid-aqueous (ILA) phase comprising cellulose, hemicellulose, or ligno-cellulose, or a mixture thereof, and (ii) an acid, such that the cellulose, hemicellulose, or ligno-cellulose is hydrolyzed into sugar, and (b) optionally adding water to the IL or ILA phase wherein the proportion of water in the IL or ILA phase does not exceed about 60% by weight. The present invention also provides for a method of recovering a sugar comprising contacting an IL or ILA phase and an organic phase comprising an organic acid.
Brennan, Timothy Charles R. (Brisbane, AU), Holmes, Bradley M. (Oakland, CA), Simmons, Blake A. (San Francisco, CA), Blanch, Harvey W. (San Francisco, CA)
SANDIA CORPORATION (Livermore CA), THE REGENTS OF THE UNIVERSITY OF CALIFORNIA (Oakland CA)
13/ 436,704
March 30, 2012
STATEMENT OF GOVERNMENTAL SUPPORT [0002] The invention was made with government support under Contract Nos. DE-AC02-05CH11231 awarded by the U.S. Department of Energy. The government has certain rights in the invention.