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Résumé :
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An improved procedure for the production of hydrogen peroxide via oxidation, with molecular oxygen, of secondary alcohols admixed with oxygenated co-solvents as primary alcohols and/or ether has been studied. The selectivity, conversion, and rates have been increased, in comparison to the data obtained in the absence of co-solvents. The increase observed in the oxidation rate of 1-phenylethanol in the presence of co-solvents has been interpreted using the chain co-oxidation reaction theory. The relative values of the termination constants of 1-phenylethanol and the tested co-solvents have been estimated. The lowest values of the termination constant of the peroxy radicals derived from the co-solvents explain the increase in the steady concentration of free radicals in the reaction media and, consequently, the enhancement observed in the co-oxidation rates.
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