Catalytic VOCs elimination over copper and cerium oxide modified mesoporous SBA-15 silica

Copper and cerium oxide bi-component materials with different Cu/Ce ratio were prepared using ordered SBA-15 silica as a support and compared with their bulk analogs. The samples were characterized by nitrogen physisorption, XRD, UV-Vis, FTIR, XPS, Raman spectroscopy and TPR with hydrogen. Cyclohexanol conversion was used as a catalytic test to obtain more information for the surface properties of the supported materials. The catalytic properties of the samples were studied in VOCs oxidation using toluene and ethyl acetate as probe molecules. A strong effect of mesoporous silica support and samples composition on the formation of catalytic sites was established.

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► The mode of copper–ceria interaction regulates catalytic activity.
► Porous silica support controls the interaction between metal oxide particles.
► Silica porous support changes the effect of Cu/Ce composition.