Oxygen Storage Capacity of Pt-CeO2 and Pt-Ce_(0.5)Zr_(0.5)O2 Catalysts

摘要

Cerium dioxide containing materials have involved much interest in recent years owing to their broad range of applications in various fields. The most important property that makes ceria as an excellent catalytic material is its oxygen storage and release capacity via the ability of ceria to rapidly switch from Ce~(3+) to Ce~(4+) under reducing and oxidizing conditions, respectively. Zirconia is incorporated into the ceria matrix as it greatly improves thermal stability and oxygen diffusion through the bulk of the crystallites.