Influence of crystallite size and interface on the catalytic performance over the CeO2/CuO catalysts

The CeO2/CuO-A catalyst consists of the small particle CeO2 and bulk CuO. The particle size of CuO is in the range from 12 nm to 25 nm. The CeO2 particles are 5 nm or so, which are dispersed on the outer surface of bulk CuO. A small amount of CeO2 exists in the form of individual particle, and most of CeO2 particles pile into the small clusters. It is obvious that the good dispersion of CeO2 is favorable for the interaction between CeO2 and CuO.