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- W2138719332 abstract "The kinetics of methylethylketone oxidation in aqueous solutions has been studied. The catalysts used were Fe3+ ions and complexes: Cu2+-pyridine, Fe3+-phenanthroline, Mn2+-phenanthroline. A mechanism has been proposed involving the following enolization, [graphic omitted] and oxidation steps, EnH + Me(n+1+)→ R·+ Men++ H+, R·+ O2→ RO2·, RO2·+ Men+→H+ ROOH + Me(n+1+), ROOH + Men+→ RO–+ Me(n+1+)+ HO·, HO·+ RH → H2O + R·, ROOHH+→ CH3COOH+ CH3CHO.A general scheme of catalytic oxidation has been proposed on the basis of the scheme for the catalytic oxidation of ascorbic acid (non-chain oxidation with a cycle Me(n+1)+[graphic omitted]Men+[graphic omitted]Me(n+1)+), the scheme for catalytic chain oxidation of hydrocarbons and aldehydes, and the scheme for oxidation of methylethylketone. The Br– and H+ catalysts may be those converting ROOH into free radicals.A different mechanism of catalysis has been found for the oxidation of benzene in aqueous solution in the presence of Fe2+ and Cu2+. This reaction is autocatalytic. Autocatalysis is due to formation of free radicals in phenol oxidation. Benzene is supposed to be oxidized to phenol by a reaction C6H6+ HO·→Ċ6H6OH[graphics ommited]C6H5OH + HO2·." @default.
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- W2138719332 date "1968-01-01" @default.
- W2138719332 modified "2023-10-18" @default.
- W2138719332 title "New aspects of ionic catalysis in oxidation of organic compounds by oxygen" @default.
- W2138719332 doi "https://doi.org/10.1039/df9684600127" @default.
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