Effect of the cerium loading on the HMS structure. Preparation, characterization and catalytic properties

Ce–HMS mesoporous materials were prepared by incipient wetness method starting from HMS synthesized inacid condition. The effect of ceriumquantity, in the range of Ce/Si atomic ratio 0.02–0.3, on its structure and propertieswas investigated. Results showed that the HMS hexagonal structure was maintained after the ceriumadding. Furthermore, the surface area and the pore volume were reduced. The presence of the cerianitenanoparticles located within the HMS channels up to 0.05, thus covering the HMS surface at higher Ce/Si atomicratio,was observed. The catalytic performances of the materials were tested in ethanol partial oxidation reaction