| Abstract
| - Oxidation of eight liquid cycloalkanes and two diesel fuels has been studied by using a lowpressure high voltage oxygen plasma. Naphthenes were individually oxidized to alcohols andketones, O(3P) being the active species in the plasma. Tertiary C−H bonds were the most reactive.At long treatment times the main products suffered successive oxidation to produce twooxygenated groups in the same molecule. cis-Decaline was four times more reactive than trans-decaline. For this two isomers and bicyclohexyl the conversions were the lowest, the yield of thetertiary carbon being between 40 and 80% of the total. Methyl-, ethyl-, and n-propylcyclohexanegave similar results. The reactivity of the two tertiary carbons of iso-propylcyclohexane amountedto c.a. 80%. This compound was the most reactive. Due to steric effects of the alkyl group, tert-butylcyclohexane showed low reactivity. Addition of 4.7−7.0 wt % of oxygen to the diesel fuelshas been achieved in one-step process with the plasma.
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