Abstract

Using the chronovoltammetric method, it has been shown that the reduction of oxygen on a mercury electrode in the presence of phenolcarboxylic acids in an acidic medium occurs as reversible electrode process followed by rate-limiting chemical reaction involving the hydroperoxyl radical. The rate constants of the phenolcarboxylic acids reaction with the radical have been calculated using the theory of electrode process followed by chemical reaction. The suggested reaction mechanism (electron transfer from the acid molecular form to the radical) has been confirmed by the correlation between the experimental rate constants and the ionization potentials of phenolcarboxylic acids simulated using the DFT method.

中文翻译：

---

酚羧酸与电生成的氢过氧自由基反应

摘要

使用计时伏安法已经表明，在酸性介质中在酚羧酸存在下，汞电极上的氧电极上的氧的还原是可逆的电极过程，随后是限速的涉及氢过氧自由基的化学反应。酚羧酸与自由基的反应速率常数已使用电极过程理论进行化学反应计算得出。建议的反应机理（电子从酸分子形式向自由基的转移）已通过实验速率常数与使用DFT方法模拟的酚羧酸的电离电势之间的相关性得到了证实。