Effect of Ce content of Ni-Ce/Al<sub>2</sub>O<sub>3</sub> catalyst on structure and CO methanation in slurry-bed reactor

MENG Fan-hui; LIU Jun; LI Zhong; ZHONG Peng-zhan; ZHENG Hua-yan

Volume 42 Issue 02

Feb. 2014

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Article Navigation > Journal of Fuel Chemistry and Technology > 2014 > 42(02): 231-237

MENG Fan-hui, LIU Jun, LI Zhong, ZHONG Peng-zhan, ZHENG Hua-yan. Effect of Ce content of Ni-Ce/Al2O3 catalyst on structure and CO methanation in slurry-bed reactor[J]. Journal of Fuel Chemistry and Technology, 2014, 42(02): 231-237.

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MENG Fan-hui, LIU Jun, LI Zhong, ZHONG Peng-zhan, ZHENG Hua-yan. Effect of Ce content of Ni-Ce/Al₂O₃ catalyst on structure and CO methanation in slurry-bed reactor[J]. Journal of Fuel Chemistry and Technology, 2014, 42(02): 231-237.

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Effect of Ce content of Ni-Ce/Al₂O₃ catalyst on structure and CO methanation in slurry-bed reactor

Key Laboratory of Coal Science and Technology, Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan 030024, China

Received Date: 2013-07-03
Rev Recd Date: 2013-10-07
Publish Date: 2014-02-28

Abstract

Abstract

Ni-Ce/Al₂O₃ catalysts with different Ce contents were prepared by wet impregnation method using γ-Al₂O₃ as support, and their catalytic performance of CO methanation in slurry-bed reactor were evaluated. The catalysts were characterized with XRD, BET, H₂-TPR, CO-TPD, and the relationship between the microstructural properties of catalysts and CO methanation in slurry-bed reactor was investigated. The results indicated that the addition of Ce into Ni/Al₂O₃ catalyst strengthened the interaction between Ni species and the support and enhanced the CO adsorption. With the increase of Ce content, the dispersion of Ni species on support was improved, the particle size of nickel decreased, the specific surface area and the relative content of β-NiO with stronger interaction with support increased firstly and then decreased. The catalytic performance of CO methanation in slurry-bed changed regularly with the increase of Ce content, the conversion of CO and the space-time yield (STY) of CH₄ were all increased firstly and then decreased slightly. When the content of Ce reached 4%, the catalyst exhibited the best catalytic performance.
- slurry-bed reactor,
- CO methanation,
- Ni-Ce/Al₂O₃ catalyst,
- cerium,
- alumina

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