Photolysis of dimethyl carbonate
Abstract
The gas-phase photolysis of dimethyl carbonate (DMC) has been studied in the temperature range 41–93°C. Methoxyl and methyl radicals are generated in this photolysis and their reactions have been studied. Arrhenius parameters have been measured for the following reactions: [graphic omitted]
A value of 1014.13(mole–1 cm3 sec–1) at 41°C has been obtained for the auto-disproportionation of methoxyl radicals: 2CH3O→CH3OH+CH2O
Using this velocity constant a value of ca. 67 has been deduced for the disproportionation ratio of methoxyl radicals, Δ(CH3O, CH3O).