|About this Abstract
||Materials Science & Technology 2011
||Interfaces, Grain Boundaries and Surfaces from Atomistic and Macroscopic Approaches -- Fundamental and Engineering Issues
||Stability and Interfacial Reactions in Pt Catalysts Based on BaCeO3 Perovskite Oxide Supports
||Minghao Fang, Michael B. Katz, Shuyi Zhang, Hongjie Wang, Mingjie Xu, George W. Graham, Xiaoqing Pan
|On-Site Speaker (Planned)
The interface between a precious metal particle and its oxide support is a determining factor in the long term stability of that catalyst against loss of activity by particle coarsening. Researchers at Daihatsu Motor Company have recently proposed the perovskite Ba[Ce, Zr]O<SUB>3</SUB> as an automotive catalyst support for Pt due to its self-regenerating “intelligent” nature, in which the Pt metal particles will reversibly dissolve into the support and reform under redox treatment rather than undergo coarsening. We utilize model Pt/BaCeO<SUB>3</SUB> catalysts in order to study this self-regenerating phenomenon, in particular reactions at the metal/oxide interface, by aberration-corrected transmission electron microscopy and related spectroscopic techniques.
||Definite: A CD-only volume