Catalytic oxidation of CO over CuxCe1−xO2−x/SBA-15/FeCrAl monolithic catalysts

A series of Cu0.5Ce0.5O1.5/SBA-15/FeCrAl with the Cu0.5Ce0.5O1.5 contents from 10 wt% to 60 wt% and 50 wt% CuxCe1−xO2−x/SBA-15/FeCrAl (x = 0–1) catalysts were prepared. The structure of the catalysts was characterized using X-ray powder diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and temperature-programmed reduction (TPR). The catalytic activity of the catalysts for the oxidation of CO was evaluated. The results indicated that for the Cu0.5Ce0.5O1.5/SBA-15/FeCrAl catalysts CuO was observed when Cu0.5Ce0.5O1.5 loading is more than 40 wt%. For the 50%CuxCe1−xO2−x/SBA-15/FeCrAl catalysts, when x is in the range of 0–0.9, CeO2 or Cu-Ce oxides were observed. When x is more than 0.5, CuO was observed. There were the strong interactions among CuO, CeO2 and the FeCrAl support, and they affected the catalytic activity of the catalysts. In all catalysts, the 50%Cu0.5Ce0.5O1.5/SBA-15/FeCrAl catalyst exhibited the best catalytic activity. CO can be completely oxidized at 160 °C.