Selectively Catalytic Combustion of Acetonitrile by Transition-metal Supported Mesoporous Molecular Sieve SBA-15

A series of mono-functional M/SBA-15(M=Cu,Co,Cr and Mn) catalysts was prepared via an incipient wetness impregnation,and characterized by XRD,N2 adsorption,TEM,H2-TPR and XPS as well as activity test for CH3CN + O2 reaction.Apart from the target product of N2,harmful by-products of NO,NO2,N2O,NH3 and CO were also observed during the combustion process.Among the prepared M/SBA-15 samples,Cu/SBA-15 exhibited a nearly complete conversion of CH3CN associated with a N2 selectivity around 80%,which was regarded as a promising material for the catalytic removal of cyanide-containing gas.