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Biorefining compounds and organocatalytic upgrading methods

United States Patent

November 28, 2017
View the Complete Patent at the US Patent & Trademark Office
The invention provides new methods for the direct umpolung self-condensation of 5-hydroxymethylfurfural (HMF) by organocatalysis, thereby upgrading the readily available substrate into 5,5'-di(hydroxymethyl) furoin (DHMF). While many efficient catalyst systems have been developed for conversion of plant biomass resources into HMF, the invention now provides methods to convert such nonfood biomass directly into DHMF by a simple process as described herein. The invention also provides highly effective new methods for upgrading other biomass furaldehydes and related compound to liquid fuels. The methods include the organocatalytic self-condensation (umpolung) of biomass furaldehydes into (C.sub.8-C.sub.12)furoin intermediates, followed by hydrogenation, etherification or esterification into oxygenated biodiesel, or hydrodeoxygenation by metal-acid tandem catalysis into premium hydrocarbon fuels.
Chen; Eugene Y. (Fort Collins, CO), Liu; Dajiang (Fort Collins, CO)
Colorado State University Research Foundation (Fort Collins, CO)
15/ 272,324
September 21, 2016
GOVERNMENT SUPPORT This invention was made with government support under Grant No. DE-FG02-10ER16193 awarded by the Department of Energy. The government has certain rights in the invention.