Process for lignin conversion to chemicals or fuels with h2 generated from lignin depolymerization products

摘要

Disclosed is a process for the production of hydrocarbons and hydrogen from lignin, comprising: combining lignin with water and an acidic or basic catalyst to form an intermediate stream comprising lignin-D and light oxygenates; decomposing the light oxygenates with a decomposition catalyst to form a second intermediate stream comprising hydrogen, wherein the decomposition catalyst comprises a mixture of metals on a support, wherein the metals are selected from chromium, gold, zinc, copper, platinum, silver, palladium, rhodium, rhenium, osmium, ruthenium, iridium and mixtures thereof, and the support is selected from the group consisting of inorganic oxides, zeolites, molecular sieves, carbon, silica, silica-alumina, boron nitride, silica nitride, and mixtures thereof; and combining the second intermediate stream with a hydrogenation catalyst to form a third stream comprising hydrogenated or partially hydrogenated compounds, wherein the hydrogenation catalyst comprises a noble metal on a support, wherein the noble metal is selected from the group consisting of platinum (Pt), palladium (Pd), and mixtures thereof, and wherein the catalyst support is selected from the group consisting of zeolites, molecular sieves, Ah03, Si02, MgO, Zr02, Ti02, mixed metal oxides, carbon, and mixtures thereof..