【摘要】 基于简单级数反应的积分和微分热动力学方程 ,建立了热动力学特征对比参量法的数学模型 ,提出了一种由特征时间参量计算特征对比参量的方法 .通过几种不同级数模型反应的热动力学研究证明了方法的正确性 ,并利用该法研究了过氧化氢在磷酸盐缓冲液中氧化对苯醌反应的动力学特征 ,实验结果表明该反应动力学方程可以表示为 :dC(醌 ) /dt =kC(醌 )C(H2 O2 ) 0 .5C(H+ ) -0 .5更多还原

【Abstract】 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 t m 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(H 2O 2) 0.5C(H +) -0.5.更多还原