Methanation of carbon dioxide by hydrogen reduction - a thermodynamic analysis

The paper presents a thermodynamic analysis of the methanation of carbon dioxide by hydrogen reduction. Equilibrium gas phase composition was determined by means of parametric equations. Calculations were performed for the temperature range T = 500 - 700 K and the initial composition x(co2)(0) is an element of (0 - 1).. A crucial parameter for catalytic processes, carbon precipitation range [C] = f(T, x(co2)(0) ) was presented as a function of temperature and an initial gas phase CO2-H-2 composition. The CO2 conversion efficiency and the methane yield in the process was determined. Obtained results may be used for experimental research prediction and in industrial pragmatic.