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

作者：Xinpeng Guo, Atsadang Traitangwong, Mingxiang Hu, Cuncun Zuo, Vissanu Meeyoo, Zhijian Peng, Chunshan Li · 发表于：Energy & Fuels · 年份：2018 · DOI：10.1021/acs.energyfuels.7b03826 · 被引用次数：212 · 研究领域：Catalysts for Methane Reforming、Carbon dioxide utilization in catalysis、Catalytic Processes in Materials Science

Diverse supports (ZSM-5, SBA-15, MCM-41, Al 2 O 3 and SiO 2 ) with various mesoporous structures were introduced to fabricate nickel-based catalysts for the CO 2 methanation by incipient wetness impregnation method. Ni/ZSM-5 catalyst displayed the most active catalytic properties, followed with Ni/SBA-15, Ni/Al 2 O 3, Ni/SiO 2 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 CO 2 methanation over Ni/ZSM-5 catalyst was also studied.