Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 513-518 |
| Number of pages | 6 |
| Journal | Journal of Natural Gas Chemistry |
| Volume | 21 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - Sept 2012 |
Keywords
- TPR
- carbon monoxide
- cerium oxide
- cupric oxide
- preferential oxidation