Deep Oxidation of Methane on Alumina–Manganese and Pt-Containing Catalysts

The kinetics of deep methane oxidation was studied over a manganese–alumina catalyst and a reference catalyst—a tableted mechanical mixture of 2% Pt+γ-Al2O3. The reaction temperature ranged from 400 to 800°C, the methane concentration was up to 4.5 vol%, and the oxygen content was up to stoichiometry. The higher the catalyst activity, the lower the probability for the homogeneous continuation of the catalytic reaction to proceed, even at 800°C with the stoichiometry gas mixture composition. The distance over which alkyl peroxide catalysts escape from the catalyst surface under reaction conditions was estimated.