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

摘要

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 γ-valerolactone, and converting the γ-valerolactone to pentanoic acid. Alternatively, the γ-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 C9 and C18 olefins, which can be hydrogenated to yield a mixture of alkanes.

主权项

1. A method for converting glucose to γ-valerolactone, the method comprising:
(a) hydrolyzing glucose derived from any source in an aqueous, acid-catalyzed reaction to yield a product mixture comprising levulinic acid and formic acid; then (b) converting at least a portion of the formic acid present in the product mixture to H2 and CO2 without separating the levulinic acid and formic acid present in the product mixture; and (c) reducing at least a portion of the levulinic acid present in the product mixture to γ-valerolactone using the H2 produced in step (b).