摘要
Different from the classical configuration CuO/CeO 2 catalyst, the inverse configuration CeO 2/CuO catalyst (atomic ratio of Ce/Cu = 10/100) was prepared by impregnation method. Five calcination temperatures were selected to investigate the interaction between CeO 2 and CuO support. It is found that as calcination temperature increased from 500 to 900°C, sintering of CeO 2 particles on the support occurred together with the diffusion of a portion of Ce 4+ ions into CuO crystals, forming solid solution. Formation of interface complex Ce-O-Cu was suggested by TPR measurements. The catalyst calcined at 700°C gives the highest activity for preferential oxidation of CO in excess H 2 stream.
| 源语言 | 英语 |
|---|---|
| 页（从-至） | 513-518 |
| 页数 | 6 |
| 期刊 | Journal of Natural Gas Chemistry |
| 卷 | 21 |
| 期 | 5 |
| DOI | |
| 出版状态 | 已出版 - 9月 2012 |