Boosting Methane Combustion Performance and Stability of Spherical Mesoporous Silica (KCC-1)-Supported Pd Catalysts by Modifying with CeO₂.

ABSTRACT: In the present work, 1.92 wt% Pd/9.68 wt% CeO₂/spherical mesoporous silica (denoted as 1.92Pd/9.68CeO₂/KCC-1) and 1.96 wt% Pd/KCC-1 (denoted as 1.96Pd/KCC-1) catalysts were prepared. It was found that the 1.92Pd/9.68CeO₂/KCC-1 sample exhibited an excellent catalytic activity for methane combustion, which was much better than that of the 1.96Pd/KCC-1 sample. In addition, the 1.92Pd/9.68CeO₂/KCC-1 sample possessed good high-temperature stability and water resistance. The enhanced methane combustion performance of 1.92Pd/9.68CeO₂/KCC-1 was mainly attributed to the good dispersion of Pd species and the stabilization of the active Pd²⁺ species and generation of more reactive oxygen species by CeO₂ modification. This wo

SUBMITTER: Feng K 

PROVIDER: S-EPMC12943732 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature