关键词: 热动力学, 数学模型, 氧化, 过氧化氢, 磷酸盐, 苯醌

According to the integral and differential thermokinetic equations of simple order reactions, the mathematical models of a novel thermokinetic research method, the characteristic reduced parameter method, have been established. The characteristic reduced parameters and the kinetic parameters of reaction studied can be calculated conveniently with this method when the characteristic time tm has been known. This method has been used to study four reaction systems with different reaction orders. The rate constants of these reactions calculated with this method are in agreement with the values in literatures, proving the validity of this method. This method has also been applied to the oxidation reaction of benzoquinone by hydrogen peroxide in buffer solution, and the experimental results indicate that the kinetic equation of oxidation reaction can be shown as follows: dC(quin)/dt = kC(quin)·C(H2O2)~(0.5)C(H+)~(0.5).

Key words: THERMODYNAMICS, MATHEMATICAL MODELS, OXIDATION, HYDROGEN PEROXIDE, PHOSPHATE, BENZOQUINONE