Carbon Dioxide Methanation over Nickel-Based Catalysts Supported on Various Mesoporous Material

By Xinpeng Guo, Atsadang Traitangwong, Mingxiang Hu, Cuncun Zuo, V. Meeyoo, Zhijian Peng, Chunshan Li. 2018

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Diverse supports (ZSM-5, SBA-15, MCM-41, Al2O3 and SiO2) with various mesoporous structures were introduced to fabricate nickel-based catalysts for the CO2 methanation by incipient wetness impregnation method. Ni/ZSM-5 catalyst displayed the most active catalytic properties, followed with Ni/SBA-15, Ni/Al2O3, Ni/SiO2 and Ni/MCM-41 catalysts. The excellent catalytic property of Ni/ZSM-5 catalyst was resulted from the basic property and the synergistic effect between nickel metal and support. The reactivity of the reaction intermediate monodentate formate in Ni/ZSM-5 catalyst was more active than that of bidentate formate species as identified by in situ infrared spectroscopy. The Ni/ZSM-5 catalyst performed with excellent stability and no deactivation up to 100 h. XRD, BET and TGA/DTA characterization further indicated that Ni/ZSM-5 catalyst had excellent resistance to carbon deposition and metal sintering. What is more, the kinetics of CO2 methanation over Ni/ZSM-5 catalyst was also studied.

Subfields: Catalysis, Materials Chemistry, Process Chemistry and Technology

View Paper: https://www.semanticscholar.org/paper/7c7492849960f37292872913487ad5470759f35b