|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||2018 Symposium on Functional Nanomaterials: Discovery and Integration of Nanomaterials
||Nickel Promoted CO Oxidation over Ceria Supported Cobalt-nickel Bimetallic Oxide Catalysts
||Zhongqi Liu, Ruigang Wang
|On-Site Speaker (Planned)
Developing non-noble metal based catalysts for carbon monoxide (CO) oxidation at low temperature still remains attractive but challenging. In this study, ceria nanorods (CeO2-NR) supported cobalt-nickel bimetallic oxides, as well as monometallic cobalt oxide and nickel oxide catalysts, were prepared by a precipitation-deposition method and investigated for CO oxidation. The T50 temperature (50% CO conversion) of the catalysts follows the sequence of 10wt% Co0.5Ni0.5Ox-CeO2-NR (97 °C) < 10wt% CoOx-CeO2-NR (150 °C) < 10wt% NiOx-CeO2-NR (175 °C) under a space velocity of 120,000 mL h-1 gcat-1 using reactive gas 1vol%CO/20vol%O2/79vol%He with a 100 mL/min flow rate. XRD and TEM data identified stable NiCo2O4 clusters on CeO2-NR. The BET surface area of 10wt% Co0.5Ni0.5Ox-CeO2-NR (146.14 m2/g) showed great enhancement compared to 10wt% CoOx-CeO2 (98.63 m2/g) and 10wt% NiOx-CeO2 (99.51 m2/g). The H2-TPR results also revealed a synergetic effect between cobalt and nickel by the lowered reduction temperature and the boosted hydrogen consumption.
||Planned: Supplemental Proceedings volume