Processes for converting biomass-derived feedstocks to chemicals and liquid fuels

摘要

The present invention provides processes, methods, and systems for converting biomass-derived feedstocks to liquid fuels and chemicals. The method generally includes the reaction of a hydrolysate from a biomass deconstruction process with hydrogen and a catalyst to produce a reaction product comprising one of more oxygenated compounds. The process also includes reacting the reaction product with a condensation catalyst to produce C4+ compounds useful as fuels and chemicals.

主权项

1. A method for producing oxygenated compounds from a biomass-derived feedstock, the method comprising:
(a) providing an aqueous feedstock, the aqueous feedstock comprising:
(i) water;(ii) greater than 20 wt % of a plurality of first oxygenated hydrocarbons, the first oxygenated hydrocarbons selected from the group consisting of monosaccharides, disaccharides, trisaccharides, oligosaccharides, and combinations thereof;(iii) between 1 wt % and 40 wt % of a plurality of second oxygenated hydrocarbons, the second oxygenated hydrocarbon comprising sugar degradation products; and(iv) ash, wherein the ash comprises less than 75 ppm sulfur and less than 30 ppm phosphorous; and (b) reacting at a temperature of less than 300° C. in a condensed liquid phase reaction or at a temperature of less than 600° C. in a vapor phase reaction a portion of the aqueous feedstock with hydrogen in the presence of a catalyst selected from the group consisting of (i) a first deoxygenation catalyst comprising palladium, molybdenum, and tin on a zirconia support, and (ii) a second catalyst comprising platinum and rhenium on a zirconia support, to produce a reaction product comprising one or more oxygenated compounds selected from the group consisting of an alcohol, a ketone, a cyclic ether, a carboxylic acid, an aldehyde, a diol, and a polyol.