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).

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideResearch Highlights► Mesoporous ceria–zirconia–alumina nanocomposite was prepared via oxidative co-precipitation method. ► CZA-supported copper catalysts exhibited excellent catalytic performance in the model reaction of NO–CO. ► The higher activity of CuCZA was related to high dispersion of copper species, low-temperature reducibility, and more oxygen vacancies.