Conclusions
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1.
Para-benzoquinone inhibits the oxidation of isopropanol, repeatedly participating in chain termination.
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2.
Kinetic evidence that the quinone reacts both with hydroxyperoxides and with hydroxyalkyl radicals of the alcohol undergoing oxidation was obtained. At a partial pressure of oxygen greater than 0.5 atm, chain termination according to the reaction of the quinone with hydroxyperoxide radicals predominates.
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3.
A mechanism of the inhibiting action of the quinone in alcohols undergoing oxidation was proposed. The relative rate constant of the reaction of hydroxyperoxide radicals with the quinone was measured.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 2. pp. 328–331, February, 1969.
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Denisov, E.T. Mechanism of the inhibiting effect of quinone in the chain reaction of oxidation of isopropyl alcohol. Russ Chem Bull 18, 282–285 (1969). https://doi.org/10.1007/BF00905536
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DOI: https://doi.org/10.1007/BF00905536