Inherent CeO₂ Pore Structure Confined Pd for the Catalytic Performance Regulation

In this study, we synthesized CeO₂ possessing an open pore structure and verified its structural differences compared to CeO₂ lacking such an open pore structure. Using these two CeO₂ samples as catalyst supports and loading them with Pd metals, a series of characterizations were carried out on the resultant catalysts to analyze their structures and properties meticulously. We have elucidated the influence of the open pore structure on the loading position of Pd. Hydrogenation reactions involving alkynes and alkenes were employed to confirm the existence of steric hindrance effects caused by the pore structure differences. Furthermore, we applied these catalysts to more valuable industrial reaction systems, demonstrating that the unique pore structures of directly synthesized CeO₂ can also exhibit excellent performance in practical applications.