氯化苄光氯化反应宏观动力学的研究

通过运用新型的内环流反应器对氯化苄光氯化反应机理和宏观状态的分析,建立了氯化苄氯化的连串反应动力学模型。经参数估计,得出了在95～125℃温度范围内连串反应的宏观反应速率常数和活化能,两步反应活化能分别为Ea1=28.14×103J/mol、Ea2=58.37×103J/mol,模型与实验数据吻合较好。根据模型,得到苄叉二氯在反应体系中能达到的最高摩尔组成为0.7和不同温度下的反应时间,为苄叉二氯的生产工艺条件的确定提供了可靠依据。

Study on the Macroscopic Kinetics of Benzyl chloride Photo-Chlorination Reaction

The kinetic model of consecutive reaction for chlorination of benzyl chloride was built by analyzing the reaction mechanism and macroscopic stage. The reaction rate constant and activity energy of consecutive reaction was calculated by parameter estimation. The two step reaction activity energies were 28.14 kJ/mol and 58.37 kJ/mol in the temperature range from 95 ℃ to 125 ℃,and the model values and experimental values tally well. The highest mole ratio of benzal chloride and reaction time at different temperature in the reaction system were obtained from this model. It was good to produce benzal chloride and provide foundation for the ascertain of technological conditions of benzal chloride production.