Issue 12, 2016

Catalysis mechanisms of CO2 and CO methanation

Abstract

Understanding the reaction mechanisms of CO2 and CO methanation processes is critical towards the successful development of heterogeneous catalysts with better activity, selectivity, and stability. This review provides detailed mechanisms of methanation processes and undesired catalyst deactivation. We characterize the methanation processes into two categories: (1) associative scheme, in which hydrogen atoms are involved in the C–O bond breaking process, and (2) dissociative scheme, where C–O bond breaking takes place before hydrogenation. For the catalyst deactivation mechanisms, we highlight three important factors, i.e. sulfur poisoning, carbon deposition and metal sintering.

Graphical abstract: Catalysis mechanisms of CO2 and CO methanation

Article information

Article type
Minireview
Submitted
03 Mar 2016
Accepted
20 Apr 2016
First published
21 Apr 2016

Catal. Sci. Technol., 2016,6, 4048-4058

Catalysis mechanisms of CO2 and CO methanation

B. Miao, S. S. K. Ma, X. Wang, H. Su and S. H. Chan, Catal. Sci. Technol., 2016, 6, 4048 DOI: 10.1039/C6CY00478D

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