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The effect of carbon deposition on the long-term stability of the Ni/SiO2 catalyst during the methanation reaction was studied in this work. For a conventional Ni/SiO2 catalyst prepared by the impregnation method, it was found that the water-gas shift reaction (WGSR) as one side reaction took place on Ni(100) planes predominately and followed the carboxyl mechanism under the present condition. The...
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