| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Powder and Ceramic Materials Science
|
| Presentation Title |
Chemical Etch/Modification Effect on CO Oxidation Performance of Ceria Supported Catalysts |
| Author(s) |
Ruigang Wang, Yifan Wang |
| On-Site Speaker (Planned) |
Ruigang Wang |
| Abstract Scope |
To satisfy the expanding demand about the exhaust gases treatment and more stringent EPA regulations, it is pressing to design and synthesize catalysts with economic viability of process and excellent catalytic activity/selectivity for better low temperature performance. Ceria (CeO2) has been widely adopted as an active carrier material in supported catalysts due to its unique redox property, which is highly correlated to the surface chemistry of CeO2. In this work, we used NaBH4, a strong reducing etching agent, to modify and transform the surface structure and chemistry of CeO2 nanorods (CeO2NR) support and then loaded the transition metal oxides on the surface modified CeO2NR. In a preliminary test, the 6 wt% NaBH4 etched CeO2NR supported transition metal oxide samples show clearly enhanced CO oxidation performance at lower temperature, which is mainly attributed to the created surface defects by boron doped CeO2 surface during NaBH4 chemical etching and strong metal-CeO2NR interaction. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Powder Materials, Characterization, Process Technology |