The synthesis of dimethyl toluene-2,4-dicarbamate from 2,4-toluene diamine and dimethyl carbonate is a complex reaction system. First, the reaction enthalpies, the Gibbs function changes, and the equilibrium constants of the reactions were calculated by several methods of group contribution. Secondly, the kinetics of the synthesis reaction over a zinc acetate catalyst was investigated in a batch autoclave. The kinetic model equations were established by parameter estimation based on experimental data, and the model met the requirements of the statistical test. The calculated results based on the model agreed well with the experimental data. According to the results of both thermodynamic calculation and kinetic analysis, the influence of some technological parameters, such as content of methanol in the feed and reaction temperature, on the synthesis reaction was discussed.

中文翻译：

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二甲基甲苯-2,4-二氨基甲酸酯合成动力学及工艺分析

由2,4-甲苯二胺和碳酸二甲酯合成甲苯-2,4-二氨基甲酸二甲酯是一个复杂的反应体系。首先，反应焓、吉布斯函数变化和反应的平衡常数通过几种基团贡献方法计算。其次，在间歇高压釜中研究了乙酸锌催化剂上的合成反应动力学。根据实验数据通过参数估计建立动力学模型方程，模型满足统计检验要求。基于模型的计算结果与实验数据吻合较好。根据热力学计算和动力学分析的结果，进料中甲醇含量和反应温度等工艺参数的影响，