About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Advances in Powder and Ceramic Materials Science
|
Presentation Title |
Surface-engineered Metal Oxide Nanocrystals: Redox Chemistry, Catalysis and Beyond |
Author(s) |
Ruigang Wang |
On-Site Speaker (Planned) |
Ruigang Wang |
Abstract Scope |
Catalyst-support interaction and interface play a critical role in heterogeneous catalysis. Support materials usually help enhance catalyst dispersion and thermal stability. In recent years, promoting effects of multivalent reducible oxide supports have gained significantly increasing research interests. Among these reducible oxides, CeO2 along with other oxides constitutes an important class of catalyst supports that can exchange oxygen rapidly under variable reducing or oxidizing conditions, which is mainly accomplished by a reversible valence change of the cerium ions with formation or elimination of oxygen vacancies. In this talk, I will present some recent progress on (1) synthesis and redox chemistry characterization of shape/crystal structure-controlled CeO2 support materials, (2) chemical etching surface modification of CeO2, and (3) understanding the catalyst-support interaction and support promoting effect for many industrial catalysis and energy storage applications such as in vehicle exhaust clean-up, carbon dioxide capture, and host materials of Li-S battery. |
Proceedings Inclusion? |
Planned: |
Keywords |
Energy Conversion and Storage, Powder Materials, Phase Transformations |