Arrhenious反应律的动力学研究

A DYNAMICS STUDY OF THE ARRHENIOUS REACTION LAW

本文从非平衡统计理论中的Fokker-Planck动力学方程出发,视化学反应物分子为布朗粒子,考虑到物质的粘滞性,从理论上对基元化学反应中的Arrhenious反应律公式进行了修正。结果表明反应速率不仅与温度成指数关系,而且还与粘滞系数成反比。其结果较Arrhenious速度理论、分子碰撞理论、绝对反应速度等理论更合理、更接近于客观实际。

In this paper, the Pokker-Planck dynamics equation is used for the Brownian particles system with viscosity, which is assumed to consist of chemical reactant molecules. The famous Arrhenious reaction law is corrected in theory. The result shows that the rate of reaction is not only connected with the exponential of temperature, but also with the reciprocal coefficient of viscosity. It is more reasonable and consistent with experimental data than the Arrhenious velocity theory, molecular collision theory and absolute reaction rate theory.