微分-积分法确定反应速率常数

介绍微分-积分法确定反应速率常数的原理以及利用MATLAB语言设计了微分．积分法求反应级数的计算机处理过程。处理时先对在实验测定中不同时刻测定的浓度C数据，利用三次样条插值法和差分法求出各浓度C对应的速率V，再利用线性回归法求出反应级数，最后利用动力学积分方程计算反应速率常数。本以一级、二级反应和分数级反应实验测定结果为例进行验证，结果表明，利用所编程序确定的反应级数与常规方法能很好的吻合。在化学动力学中这种数据处理方法将使实验过程得到简化，实验结果更准确、更可靠。

Differential-integral Method of Determining for the Rate Constant

Based on the theory of a differential method and the integral method for determining the order of a reaction and the rate constant,the paper introduces the experimental data processing by using the differential integral method and designing Matlab program.During the process,for the measured concentricity value C at different time during the experiment,use the piecewise cubic spline branketing method and the differentiation method the get velocity ratio V which is in corresponding to the different concentricity C,and then use the linear regression analysis to get the relation of lnC and lnV and the reaction order n,at last to get the rate constant K by using the the integral function of chemical kinetic.Calculation examples for experimental data of these reaction orders such as,the first,the second and the quantile are given.and the results show a good agreement to the results computed with ordinary.In the chemical kinetic,this method of experimental data processing will simplify the experimental procedure,and the results may be more accurate and reliable.