1. Combined lignin depolymerization and hydrogen production by a novel proton exchange membrane (PEM) electrolysis process 2. Oxidation process: About 1 4% of Kraft lignin was converted to aromatic chemicals in three cycles reaction; most of ether linkages were cleaved; most of -OH groups were reacted 3. Electrolysis process: Noble metal catalyst at anode was replaced by cheap carbon based material - Graphite; Faraday efficiency was higher than 90%; Saved more than 40% electric energy in our electrolysis process comparing with the best alkaline water electrolysis
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