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Catalytic conversion of cellulose to liquid hydrocarbon fuels by progressive removal of oxygen to facilitate separation processes and achieve high selectivities

United States Patent

January 7, 2014
View the Complete Patent at the US Patent & Trademark Office
Described is a method to make liquid chemicals. The method includes deconstructing cellulose to yield a product mixture comprising levulinic acid and formic acid, converting the levulinic acid to .gamma.-valerolactone, and converting the .gamma.-valerolactone to pentanoic acid. Alternatively, the .gamma.-valerolactone can be converted to a mixture of n-butenes. The pentanoic acid can be decarboxylated yield 1-butene or ketonized to yield 5-nonanone. The 5-nonanone can be hydrodeoxygenated to yield nonane, or 5-nonanone can be reduced to yield 5-nonanol. The 5-nonanol can be dehydrated to yield nonene, which can be dimerized to yield a mixture of C.sub.9 and C.sub.18 olefins, which can be hydrogenated to yield a mixture of alkanes.
Dumesic; James A. (Verona, WI), Ruiz; Juan Carlos Serrano (Madison, WI), West; Ryan M. (Madison, WI)
Wisconsin Alumni Research Foundation (Madison, WI)
13/ 369,388
February 9, 2012
FEDERAL FUNDING STATEMENT This invention was made with government support under DE-FG02-03ER15468 awarded by the Department of Energy. The government has certain rights in the invention.