Rate Coefficients of Elementary Steps in the Inhibited Oxidation of Ethylbenzene, II. Interaction between Hydroperoxide and Alcohol Molecules

The decomposition of 1-phenylethyl-hydroperoxide assisted by 1-phenyl-ethanol has been investigated in the presence of 2,6-di-tert-butyl-4-methyl-phenol (ionol). Ethylbenzene was used as solvent, the temperature range was 115–130°C. The inhibition period was measured as a function of alcohol concentration (and inhibitor concentration as well). The activation parameters of hydroperoxide decomposition assisted by alcohol have been determined:

k_{HROOH + HROH} = 1.13 · 10⁷ exp(94.9 kJ mol^-1/RT) s^-1