Selective Catalytic Oxidation of Glycerol to 1,3‐Dihydroxyacetone Over Supported Au/CuO–SnO 2 Catalysts: The Influence of Support Preparation Methods

This study investigates how interactions within catalysts impact performance in catalytic oxidation systems. In this work, a series of Cu‐doped SnO 2 supports with different morphologies are synthesized via sacrificial template, hydrothermal, solvothermal, and coprecipitation methods, respectively. And then Au nanoparticles were supported onto the above four supportsthrough urea deposition to obtain Au/CS‐HT, Au/CS‐NS, Au/CS‐YS, and Au/CS‐DP catalysts. Under mild conditions, the Au/CS‐HT catalystexhibited optimal catalytic performance for the conversion of glycerol to 1,3‐dihydroxyacetone (DHA). Glycerol conversion and DHA selectivity reached 62.2% and 81.2%, respectively. Characterization revealed that the sacrificial‐template catalyst’s strong component interactions yield unique crystalline properties: uniformly distributed Cu 2+ ions and abundant oxygen vacancies in SnO 2 enhance oxygen activation, while Au‐support electronic synergistic effect and appropriate basic sites selectively oxidize secondary hydroxyl groups in glycerol. These findings provide new design principles for optimizing metal–support interactions through synthesis methods of support.