Abstract
Diffuse scattering IR spectroscopy was applied to study the adsorption and plasma-assisted catalytic conversion of methane (deuteromethane) on the surface of γ-alumina. It was found that CH4 adsorption sites on the γ-Al2O3 surface were formed by molecular and dissociative mechanisms under the action of an electric-discharge plasma at room temperature. As distinct from γ-radiolysis, plasma treatment leads to the formation of acetylene in addition to other hydrocarbon products, aluminum hydrides, and surface hydroxyl groups. Plausible mechanisms were proposed for plasma-assisted catalytic reactions in the γ-Al2O3 –adsorbed CH4 (CD4 ) system.
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