A. Dyachenko, O. Ischenko, S. V. Gaidai, T. Zakharova, A. Yatsymyrskyi, Vladyslav V. Lisnyak
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Kinetic study of carbon dioxide catalytic methanation over cobalt–nickel catalysts
Based on the data of the thermoprogrammed desorption and using mass-spectroscopic analysis of desorbed products and on the kinetic patterns of the methanation process for cobalt–nickel catalysts, we suggested a mechanism for the reaction which passes through forming intermediate formyl compounds: CHO*, HCOH*, and HCOOH*. Because of the high stability of the carbon dioxide molecule, the step of adding the first hydrogen atom is the limiting step. Such a mechanism is in good agreement with the proposed kinetic equations.
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