负载金催化剂Au／CeO2的制备及其催化氧化性质表征

摘要

文中利用简单方法制备出高效的CeO2载体，并通过沉积一沉淀法成功制备出新型催化剂Au／Ce02；通过表征发现，500C培烧出来的Au／Ce02催化剂对CO氧化活性最高。%High efficient Ce02 carrier is prepared by a simple method and a new type of catalyst Au/CeO2 is successfully prepared by deposition-precipitation. By characterization, we find that Au/CeO2 catalyst calcined under 500C temperature is high- est activity for CO oxidation, because gold particle size is appropriate and valence state is also consistent with the requirements of ca- talysis. On the other hand, the synergy effect is obvious between gold particles and Ce02 on Au/CeO2 catalyst calcined under 500~C temperature.