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 |
|---|---|
| Pages (from-to) | 39-44 |
| Number of pages | 6 |
| Journal | Catalysis Today |
| Volume | 93-95 |
| DOIs | |
| Publication status | Published - 2004 Sep 1 |
| Event | Selections from the Presentations of the 3rd Asia-Pacific Congress - Dalian, China Duration: 2003 Oct 12 → 2003 Oct 12 |
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All Science Journal Classification (ASJC) codes
- Catalysis
- Chemistry(all)
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Carbon dioxide reforming of methane over co-precipitated Ni-CeO 2, Ni-ZrO2 and Ni-Ce-ZrO2 catalysts. / Roh, Hyunseog; Potdar, H. S.; Jun, Ki Won.
In: Catalysis Today, Vol. 93-95, 01.09.2004, p. 39-44.Research output: Contribution to journal › Conference article
TY - JOUR
T1 - Carbon dioxide reforming of methane over co-precipitated Ni-CeO 2, Ni-ZrO2 and Ni-Ce-ZrO2 catalysts
AU - Roh, Hyunseog
AU - Potdar, H. S.
AU - Jun, Ki Won
PY - 2004/9/1
Y1 - 2004/9/1
N2 - 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.
AB - 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.
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UR - http://www.scopus.com/inward/citedby.url?scp=4344707651&partnerID=8YFLogxK
U2 - 10.1016/j.cattod.2004.05.012
DO - 10.1016/j.cattod.2004.05.012
M3 - Conference article
AN - SCOPUS:4344707651
VL - 93-95
SP - 39
EP - 44
JO - Catalysis Today
JF - Catalysis Today
SN - 0920-5861
ER -