The mechanism of carbon dioxide hydrogenation on copper and nickel catalysts
Authors:
- 1 March 2007
- journal article
- Published by Pleiades Publishing Ltd in Petroleum Chemistry
- Vol. 47 (2) , 75-82
Abstract
The mechanism of the reaction of CO2 with H2 on copper and nickel catalysts was studied by means of isotope, non-steady-state, and steady-state methods. Staged schemes of the process were proposed. The slow step of CO formation on the test catalysts is the reaction of the adsorbed carboxylate complex with a hydrogen atom. It was shown that hydrogen adsorption on the copper catalyst is dissociative in character. A formyl complex and hydrogen are involved in the slow step of methane formation on the nickel catalyst. It was found that the methane formation proceeds via a consecutive scheme through CO.Keywords
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