Low temperature methanation of syngas in a slurry reactor over Zr-doped Ni/γ-Al<sub>2</sub>O<sub>3</sub> catalyst

ZHANG Jun-feng; BAI Yun-xing; ZHANG Qing-de; XIE Hong-juan; TAN Yi-sheng; HAN Yi-zhuo

Volume 41 Issue 08

Aug. 2013

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Article Navigation > Journal of Fuel Chemistry and Technology > 2013 > 41(08): 966-971

ZHANG Jun-feng, BAI Yun-xing, ZHANG Qing-de, XIE Hong-juan, TAN Yi-sheng, HAN Yi-zhuo. Low temperature methanation of syngas in a slurry reactor over Zr-doped Ni/γ-Al2O3 catalyst[J]. Journal of Fuel Chemistry and Technology, 2013, 41(08): 966-971.

Citation:

ZHANG Jun-feng, BAI Yun-xing, ZHANG Qing-de, XIE Hong-juan, TAN Yi-sheng, HAN Yi-zhuo. Low temperature methanation of syngas in a slurry reactor over Zr-doped Ni/γ-Al₂O₃ catalyst[J]. Journal of Fuel Chemistry and Technology, 2013, 41(08): 966-971.

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Low temperature methanation of syngas in a slurry reactor over Zr-doped Ni/γ-Al₂O₃ catalyst

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: 2013-05-31
Rev Recd Date: 2013-06-17
Publish Date: 2013-08-30

Abstract

Abstract

Zr-doped Ni/γ-Al₂O₃ catalyst was prepared by co-impregnation of Ni and Zr on γ-Al₂O₃; over it, the methanation of syngas at low temperature (300~330 ℃) in a slurry reactor was investigated. Compared with single NiO and Ni/γ-Al₂O₃, the catalytic performance of the Zr-doped Ni/γ-Al₂O₃ is greatly improved. Under optimized condition, a high CO conversion of 86.41% and a selectivity of 90.53% to CH₄ are achieved at a GHSV of 4 200 mL·g^-1·h^-1. XRD, TEM and H₂-TPR results suggest that the doping of Zr promotes dispersion of Ni on γ-Al₂O₃, weakens the interaction between Ni and the support and suppresses the formation of NiAl₂O₄ spinel with low methanation activity; all these may contribute to the excellent performance of the Zr-doped Ni/γ-Al₂O₃ catalyst in syngas methanation.
- syngas,
- methanation,
- natural gas,
- slurry reactor,
- low temperature

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References

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