Abstract
Abstract The partial oxidation of hydrocarbons such as methane, ethane and cyclohexane was investigated in the gas phase by use of oxygen and a chain initiator, either nitrous oxide or ozone, which was photochemically decomposed by irradiation of Ar-F or Kr-F excimer laser light. The reaction products obtained at 300 - 600 K and subatmospheric pressure consisted of hydrocarbons, alcohols, aldehydes, ketones, ethers, esters and carbon oxides. A mechanistic study using oxygen isotopes, together with a kinetic evaluation of the relevant elementary reactions, were used to explore the reaction mechanism leading to the product profiles observed experimentally. By use of Kr-F laser light to decompose ozone, cyclohexane gave cyclohexanol and cyclohexanone, for which the combined selectivity was more than 90% at a conversion level of 5%.
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