Influences of reaction conditions on the CH4-CO2 reforming and coking properties of a Ni-CaO-ZrO2 catalyst

SUN Nan-nan; WEN Xia; WANG Feng; PENGWei-cai; XIAO Fu-kui; WEI Wei; SUN Yu-han; LI Hai

Volume 40 Issue 03

Mar. 2012

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Article Navigation > Journal of Fuel Chemistry and Technology > 2012 > 40(03): 345-349

SUN Nan-nan, WEN Xia, WANG Feng, PENGWei-cai, XIAO Fu-kui, WEI Wei, SUN Yu-han, LI Hai. Influences of reaction conditions on the CH4-CO2 reforming and coking properties of a Ni-CaO-ZrO2 catalyst[J]. Journal of Fuel Chemistry and Technology, 2012, 40(03): 345-349.

Citation:

SUN Nan-nan, WEN Xia, WANG Feng, PENGWei-cai, XIAO Fu-kui, WEI Wei, SUN Yu-han, LI Hai. Influences of reaction conditions on the CH₄-CO₂ reforming and coking properties of a Ni-CaO-ZrO₂ catalyst[J]. Journal of Fuel Chemistry and Technology, 2012, 40(03): 345-349.

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Influences of reaction conditions on the CH₄-CO₂ reforming and coking properties of a Ni-CaO-ZrO₂ catalyst

1.
State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001,China;
2.
Graduate University of Chinese Academy of Sciences, Beijing 100049, China;
3.
Low Carbon Conversion Center, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201203, China;
4.
Department of Chemistry and Chemical Engineering,Chongqing University of Technology, Chongqing 400054, China

Received Date: 2011-04-13
Publish Date: 2012-03-31

Abstract

Abstract

CH₄-CO₂ reforming was carried out over a Ni-CaO-ZrO₂ catalyst prepared by co-precipitation. The influence of reaction conditions like temperature, space velocity and feed component on CH₄-CO₂ reforming and coking properties was studied. Thermodynamic calculation as well as experimental measurement indicated that the reaction conditions play an important role in the behaviors of reforming and coke deposition. Higher activity and stability are observed under higher temperature due to the enhancement of both CH₄ decomposition and elimination of carbon species formed at such condition. At higher space velocity, both the conversion of CH₄ and the rate of carbon elimination are decreased, resulting in an increase of carbon deposition. The component of feed gases also has a significant impact on the amount of carbon deposited; a higher CO₂/CH₄ molar ratio is favored in suppressing coking during the reforming reaction.
- methane,
- carbon dioxide,
- reforming,
- carbon deposition,
- temperature programmed oxidation (TPO)

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References(15)

References

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