The efficient catalytic conversion of lignin represents a critical challenge in biomass valorization, primarily due to the inherent difficulty in selectively depolymerizing lignin while maintaining the structural integrity of cellulose and hemicellulose. Herein, we present an innovative approach involving the synthesis of ionic liquid polyoxometalate (IL-POM) catalysts, which integrate both redox-active and Lewis acid sites, and are further modified with a choline chloride monomer. Among the synthesized catalysts, ChH