Abstract
Acetone was photo-oxidized in a static system between 200° and 300°C. Its pressure was 100 mm while that of oxygen varied between 2 and 4 mm. This chain-type photo-oxidation reaction gave a considerable yield of methyl hydroperoxide. This was directly confirmed by polarography and paper chromatography. In the early stages of the work, the methyl hydroperoxide yield tended to decrease through identical successive photo-oxidations. When a photolysis was performed in the same cell in which a number of photo-oxidations had taken place, analysis showed the possibility of the presence of an oxidative species strongly absorbed to the silica walls. This difficulty was practically overcome. Among the main products were methanol, formaldehyde, water, acetic acid, and ethylene oxide. As the temperature rose the yield of methyl hydroperoxide decreased.
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