Zhludenko M. Physico-chemical and catalytic properties of Co-Ni and Co-Fe systems in the reaction of CO2 methanation.

The catalytic methanation of carbon dioxide is an important chemical process with potential commercial application. This research includes systematic study of the catalytic and structural features of two-component bulk and supported Co-Ni and Co-Fe catalytic systems, the investigation of the impact of the preparation method and the type of support to activity in the reaction of the methanation CO2- at atmospheric pressure. A series of bulk Сo-Ni and Co-Fe catalysts for CO2 hydrogenation is tested at the atmospheric pressure conditions. The Samples with high cobalt content exhibited higher activity compare to lower cobalt content samples. The kinetics of the methanation process has been studied, and the possible mechanisms for each catalytic system have been proposed. The calculated kinetic equations are in good agreement with the experimental results. The activities of Co-Ni and Co-Fe supported catalysts for the methanation of CO2 obtained by three different methods at atmospheric pressure are studied. It is found that the type of the support plays an important role in CO2 conversion and effective supported catalysts are obtained.