摘要 : A binary system (BS) of styrene epoxide-p-toluenesulfonic acid (SE-TSA) oxidized in a solution of isopropyl alcohol (ISA) initiates its radical chain oxidation (RCO). For the correct measurement of the oxygen uptake by the binary ... 展开 A binary system (BS) of styrene epoxide-p-toluenesulfonic acid (SE-TSA) oxidized in a solution of isopropyl alcohol (ISA) initiates its radical chain oxidation (RCO). For the correct measurement of the oxygen uptake by the binary system itself, RCOs are blocked by introducing small (similar to 10(-5) mol/L) concentrations of Cu2+ acetate, a catalyst for breaking solvent oxidation chains. The oxidation rate measured using this technique is expressed as V = k [SE](0) [TSA](1) at [SE] >> [TSA](1), where SE is styrene epoxide and TSA is p-toluenesulfonic acid. The Arrhenius form of the effective rate constant has the form k [s(-1)] = 5.2 x 10(10)exp(-85.0 kJ mol(-1)/RT) at 333-348 K. 收起