Abstract
A co-precipitation method was employed to prepare nickel oxide dispersed on CeO2, ZrO2 and cubic Ce0.8Zr 0.2O2 support to obtain catalysts useful for carbon dioxide reforming of methane reaction. The Ni-CeO2 and Ni-Ce-ZrO 2 catalysts showed relatively high activity and stability, while the Ni-ZrO2 catalyst deactivated in the initial stage of the reaction due to serious carbon formation. The co-precipitated Ni-Ce-ZrO2 catalyst exhibited the highest catalytic activity (CH4 conversion >97% at 800°C) among the catalysts tested and the activity was maintained without significant loss during the reaction for 100h. The enhanced catalytic activity and stability of the co-precipitated Ni-Ce-ZrO2 catalyst is attributed to the combination of nano-crystalline nature of cubic Ce 0.8Zr0.2O2 support and finely dispersed nano-sized NiOx crystallites resulting in intimate contact between Ni and support, better Ni dispersion, higher Ni surface area and enhanced oxygen transfer during the reaction.
Original language | English |
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Pages (from-to) | 39-44 |
Number of pages | 6 |
Journal | Catalysis Today |
Volume | 93-95 |
DOIs | |
Publication status | Published - 2004 Sept 1 |
Event | Selections from the Presentations of the 3rd Asia-Pacific Congress - Dalian, China Duration: 2003 Oct 12 → 2003 Oct 12 |
All Science Journal Classification (ASJC) codes
- Catalysis
- Chemistry(all)