Mesoporous ceria-zirconia-alumina nanocomposite-supported copper as a superior catalyst for simultaneous catalytic elimination of NO-CO

A series of transition metal (Mn, Fe, Co, Ni, Cu and Ag) oxides supported on ceria-zirconia-alumina nanocomposite catalysts were prepared through wetness impregnation method. The catalytic performance of these catalysts were evaluated in the catalytic elimination of NO-CO. Activity results revealed supported copper catalyst gave the optimal catalytic activity, which was related to high dispersion of copper species (XRD and Raman), low-temperature reducibility (TPR), and more oxygen vacancies (DRS). (C) 2011 Elsevier B.V. All rights reserved.