Catalytic methanation of syngas over Ni-based catalysts with different supports

doi:10.1016/j.cjche.2016.10.019

摘要/Abstract

摘要： Co-precipitation method was selected for the preparation of Ni/Al₂O₃, Ni/ZrO₂ and Ni/CeO₂ catalysts, and their performances in methanation were investigated in this study. The structure and surface properties of these catalysts were characterized by BET, XRD, H₂-TPD, TEM and H₂-TPR. The results showed that the catalytic activity at low temperature followed the order:Ni/Al₂O₃ > Ni/ZrO₂ > Ni/CeO₂. Ni/Al₂O₃ catalyst presented the best catalytic performance with the highest CH₄ selectivity of 94.5%. The characterization results indicated that the dispersion of the active component Ni was the main factor affecting the catalytic activity and the one with higher dispersion gave better performance.

关键词: Methanation, Ni dispersion, Catalytic activity, Catalyst support, Stability

Abstract: Co-precipitation method was selected for the preparation of Ni/Al₂O₃, Ni/ZrO₂ and Ni/CeO₂ catalysts, and their performances in methanation were investigated in this study. The structure and surface properties of these catalysts were characterized by BET, XRD, H₂-TPD, TEM and H₂-TPR. The results showed that the catalytic activity at low temperature followed the order:Ni/Al₂O₃ > Ni/ZrO₂ > Ni/CeO₂. Ni/Al₂O₃ catalyst presented the best catalytic performance with the highest CH₄ selectivity of 94.5%. The characterization results indicated that the dispersion of the active component Ni was the main factor affecting the catalytic activity and the one with higher dispersion gave better performance.

Key words: Methanation, Ni dispersion, Catalytic activity, Catalyst support, Stability

Yincong Liu, Lingjun Zhu, Xiaoliu Wang, Shi Yin, Furong Leng, Fan Zhang, Haizhou Lin, Shurong Wang. Catalytic methanation of syngas over Ni-based catalysts with different supports[J]. , 2017, 25(5): 602-608.

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