Preparation, characterization and CO oxidation activity of Cu-Ce-Zr mixed oxide catalysts via facile dry oxalate-precursor synthesis

Preparation, characterization and CO oxidation activity of Cu-Ce-Zr mixed oxide catalysts via facile dry oxalate-precursor synthesis

CuO-CeO2-ZrO2 catalysts were prepared via facile dry oxalate-precursor synthesis and tested for COoxidation. The effect of Cu contents was investigated by N2 adsorption, TEM, XRD, XPS, H2-TPR, CO-TPDand Raman techniques. The results show that CuO dispersion, SBET and adsorbed CO amount exhibit avolcano trend with increasing the Cu content. The highest activity was achieved over the catalyst with18 mol% Cu with the CO conversion being 99% at 85 8C. The superior performance of the catalystprepared by this method is attributed to the finely dispersed CuO species and the strong interaction ofCuO with ceria-zirconia phase.

CuO-CeO2-ZrO2 catalysts were prepared via facile dry oxalate-precursor synthesis and tested for COoxidation. The effect of Cu contents was investigated by N2 adsorption, TEM, XRD, XPS, H2-TPR, CO-TPDand Raman techniques. The results show that CuO dispersion, SBET and adsorbed CO amount exhibit avolcano trend with increasing the Cu content. The highest activity was achieved over the catalyst with18 mol% Cu with the CO conversion being 99% at 85 8C. The superior performance of the catalystprepared by this method is attributed to the finely dispersed CuO species and the strong interaction ofCuO with ceria-zirconia phase.