Process for the conversion of lignin to liquid hydrocarbons

摘要

A process for the conversion of lignin to liquid hydrocarbons comprising:
(1) hydrogenolyzing a lignin in the presence of at least one hydrogenolysis catalyst, at a temperature ranging from 250° C. to 350° C., preferably ranging from 290° C. to 320° C., to obtain depolymerized lignin; and (2) hydrodeoxygenating said depolymerized lignin in the presence of a hydrodeoxygenating catalyst to obtain a mixture of liquid hydrocarbons. The resultant liquid hydrocarbons can be used as such (biofuels) for the production of reformulated gasolines, or they can be used for the production of gasolines or oils by conventional refining processes.

主权项

1. A process for converting lignin to liquid hydrocarbons, the process comprising:
hydrogenolyzing a lignin in the presence of at least one hydrogenolysis catalyst, selected from supported catalysts having formula (I), (II), (III), or (IV):
M1/C  (I),M1/Al2O3  (II),M2/SiO2  (III),M2/Al2O3  (IV), wherein M1 is a metal selected from the group consisting of palladium, ruthenium, and platinum, and M2 is nickel, at a temperature ranging from 250° C. to 350° C., to obtain a depolymerized lignin; and hydrodeoxygenating said depolymerized lignin in the presence of at least one hydrodeoxygenation catalyst selected from supported catalysts having formula (III), (V), (VI), (VII), or (VIII):
M2/SiO2  (III),M3M/Al2O3  (V),M3M/SiO2—Al2O3  (VI),M3MP/Al2O3  (VII),M3MP/SiO2—Al2O3  (VIII), wherein M is a metal selected from the group consisting of molybdenum and tungsten, M2 is nickel, M3 is a metal selected from the group consisting of cobalt and nickel, and P is phosphorous, at a temperature ranging from 300° C. to 500° C., to obtain a mixture of liquid hydrocarbons.