Performance of Fe2O3/LaFeO3 as oxygen carrier in chemical-looping hydrogen generation

LIANG Hao; SONG Xi-jun; YIN Ze-qun; ZHANG Xi-wen; FANG Xiang-chen

Volume 41 Issue 12

Dec. 2013

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LIANG Hao, SONG Xi-jun, YIN Ze-qun, ZHANG Xi-wen, FANG Xiang-chen. Performance of Fe2O3/LaFeO3 as oxygen carrier in chemical-looping hydrogen generation[J]. Journal of Fuel Chemistry and Technology, 2013, 41(12): 1512-1519.

Citation:

LIANG Hao, SONG Xi-jun, YIN Ze-qun, ZHANG Xi-wen, FANG Xiang-chen. Performance of Fe₂O₃/LaFeO₃ as oxygen carrier in chemical-looping hydrogen generation[J]. Journal of Fuel Chemistry and Technology, 2013, 41(12): 1512-1519.

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Performance of Fe₂O₃/LaFeO₃ as oxygen carrier in chemical-looping hydrogen generation

Fushun Institute of Petrochemicals and Petroleum, Fushun 113001, China

Received Date: 2013-03-07
Rev Recd Date: 2013-05-04
Publish Date: 2013-12-30

Abstract

Abstract

Fe₂O₃/LaFeO₃ was prepared by citric acid complexation method and used as oxygen carrier in chemical-looping hydrogen generation; the effect of Fe₂O₃/CH₄ ratio, stream amount and metal loading on the performance of Fe₂O₃/LaFeO₃ as oxygen carrier at 900 ℃ and atmospheric pressure were investigated. The results showed that the oxygen carrier performs best with CH₄ conversion of 60% and single-loop H₂ output of 45 mL, when the ratio of Fe₂O₃/CH₄, stream input and Fe loading are 2, 0.1 mL, 15%, respectively. The XRD and H₂-TPR results suggest that the active site is the adsorbed oxygen rather than metal oxide; the easier for the reduction of the adsorbed oxygen, the higher are the conversion of CH₄ and the output of H₂. Moreover, the oxygen carrier is still in perovskite structure and CH₄ conversion and H₂ output remain stable even after 60 cycles.
- chemical-looping hydrogen generation,
- oxygen carrier,
- citric acid complexation method,
- perovskite,
- methane

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References

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