Partial oxidation reforming of methane to synthesis gas by chemical-looping using CeO2-modified Fe2O3 as oxygen carrier

ZHANG Jun-wei; HUANG Jie-jie; FANG Yi-tian; WANG Zhi-qing; YU Zhong-liang

Volume 42 Issue 02

Feb. 2014

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Article Navigation > Journal of Fuel Chemistry and Technology > 2014 > 42(02): 158-165

ZHANG Jun-wei, HUANG Jie-jie, FANG Yi-tian, WANG Zhi-qing, YU Zhong-liang. Partial oxidation reforming of methane to synthesis gas by chemical-looping using CeO2-modified Fe2O3 as oxygen carrier[J]. Journal of Fuel Chemistry and Technology, 2014, 42(02): 158-165.

Citation:

ZHANG Jun-wei, HUANG Jie-jie, FANG Yi-tian, WANG Zhi-qing, YU Zhong-liang. Partial oxidation reforming of methane to synthesis gas by chemical-looping using CeO₂-modified Fe₂O₃ as oxygen carrier[J]. Journal of Fuel Chemistry and Technology, 2014, 42(02): 158-165.

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Partial oxidation reforming of methane to synthesis gas by chemical-looping using CeO₂-modified Fe₂O₃ as oxygen carrier

1.
State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China;
2.
University of Chinese Academy of Sciences, Beijing 100049, China

Received Date: 2013-07-23
Rev Recd Date: 2013-09-09
Publish Date: 2014-02-28

Abstract

Abstract

The CeO₂/Fe₂O₃ oxygen carriers were prepared by co-precipitation method and their characterization was carried out using X-ray diffraction (XRD) and scanning electron microscope (SEM). The partial oxidation reforming of methane was tested in a fixed-bed at different operating conditions. The temperature programming results show that 30% CeO₂-modified Fe₂O₃ has rather better effect than pure Fe₂O₃; the conversion of CH₄, the selectivity of H₂ and CO are greatly improved. Same results have been observed in isothermal experiments. As the reaction time is less than 1 200 s, there is no carbon deposit formed. After 15 cycles, 30% CeO₂-modified Fe₂O₃ has the best cycling performance at 850 ℃ and the reaction time of 945 s. The conversion of CH₄ reaches to 91.53%, the selectivity of H₂ and CO reach to 86.36% and 85.12%, respectively and the H₂/CO mol ratio in syngas is 2.03. The species of substance in oxygen carriers has no obvious change after 15 cycles.
- chemical-looping,
- oxygen carrier,
- methane,
- synthesis gas,
- cycle

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References(24)

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