Patterns of methane gas-oxygen conversion on the surface of freshly reduced iron

A thermodynamic analysis of the methane conversion process in the presence of oxygen has been carried out. Theoretical features of methane conversion on a metal catalyst are considered. It has been shown that, within the studied temperature range, the direct mechanism of methane conversion is the most probable. The influence of the oxidant fraction and the ratio of its components on the key parameters of the conversion process is demonstrated. Parameters affecting the kinetics of methane conversion in a complex gas phase with oxygen participation have been analyzed. An experimental study of the oxidative conversion of methane on the surface of freshly reduced iron was conducted, and the effects of iron metallization temperature, conversion temperature, FeMET particle size and mass, as well as the contact time of the initial gas mixture with the catalyst, were evaluated. The efficiency of gas-oxygen conversion increases with higher pellet metallization temperature. Based on theoretical and experimental studies, the features of the adsorption-chemical stage of methane conversion with oxygen have been established.