Effect of irradiation temperature on the radiolysis of methane

Abstract The G -values of most products increase with temperature in the radiolysis of methane in a flow-type experiment over the temperature range 50–280°C at atmospheric pressure. The apparent activation energies of most products are higher at higher temperature region above 150°C than those obtained below about 100°C. Irradiation at higher temperature favors the formation of olefins. The results are qualitatively understood on the basis of known nature and reactivity of free radicals.