Abstract
V-doped ZrO(2) support materials were synthesized through a hydrothermal method, followed by a deposition-precipitation process to load Au clusters using an H(4)AuClO(4) precursor. This study investigated the impact of vanadium doping on propylene epoxidation over the corresponding Au-supported catalysts. Vanadium incorporation significantly enhanced propylene conversion and promoted acrolein production, leading to reduced propylene oxide selectivity. Propylene epoxidation at higher temperatures accelerated the decomposition of oxygenates into CO(2). Vanadium addition to ZrO(2) altered the interactions between Au and V-doped ZrO(2), thereby modifying the chemical states of Zr, Au, and V and forming surface oxygen vacancies and active oxygen species. These changes defined the catalytic performance of the materials.