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Lignin is the abundant,unique and renewable aromatic polymer on the globe.It has long been considered as the potential feedstock for bulk of biochemical and biofuel.However,it is much more recalcitrant for transformation than cellulose and hemicellulose[1,2].Furthermore,the low target product yield and the serious char formation caused by the repolymerization of the unsaturated olignomer[3] has been a considerable challenge for current lignin utilization.The efficient conversion of lignin depolymerization products to more thermal and chemical stable chemicals is thereby a promising approach.Here,we reported a novel and efficient method for lignin depolymerization products valorization under the simple and economic catalyst NiMgOx.