Abstract
The γ-radiolysis of p-benzoquinone (Q) at different concentrations of H2SO4, Q, O2 and Cl− are p-hydroquinone (H2 Q), 2-hydroxy-p-benzoquinone (2-Q-OH) and H2O2. The effect of Cl− on yields is similar to its effect in deaerated solutions. The yields of H2Q and 2-Q-Oh are lower than in deaerated solutions. In the presence of simple aliphatic alcohols, a carbonyl compound is also measured in addition to those mentioned above. This system is found to be more complex than in deaerated solutions. Q and O2 were found to compete for the radical R1 R2 COH and good agreement was obtained between observed and reported rate coefficients of the reactions involved. There is some evidence that at lower pH, alcohol peroxy radicals are also able to undergo electron transfer with quinone.
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