The kinetic behavior of bis(2-methyl) butylene carbonate (BMBC) by the transesterification of dimethyl carbonate (DMC) with 1,4-butanediol (BDO) was investigated experimentally and theoretically. The Fourier transform infrared spectroscopy (FTIRs) test confirmed that the BMBC was successfully synthesized. The optimum preparation process of BMBC was investigated at atmospheric pressure, where Zn(Ac)₂∙2H₂O was the best catalyst for this transesterification reaction, and the optimal concentration was 0.3 wt%. The conversion was determined by measuring the amount of methanol produced during the reaction by refractometric method. A kinetic model was proposed according to the experimental results. The results showed that the transesterification reaction was a pseudo-first-order reaction. The apparent activation energy (E_a) significantly decreased with the increase of catalyst concentration from 0.1 wt% to 0.5 wt%. The E_a of the reaction was 102.13, 84.36, and 70.18 kJ mol⁻¹, respectively, when the catalyst concentration was 0.1 wt%, 0.3 wt%, and 0.5 wt%. Furthermore, the parameters of the optimal heating curve in the batch reactor was obtained according to the optimal model.

中文翻译：

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碳酸二甲酯与1,4-丁二醇酯交换反应生成双(2-甲基)碳酸亚丁酯的动力学

通过实验和理论研究了碳酸二甲酯 (DMC) 与 1,4-丁二醇 (BDO) 酯交换反应生成双 (2-甲基) 碳酸丁烯酯 (BMBC) 的动力学行为。傅里叶变换红外光谱(FTIR)测试证实BMBC成功合成。研究了常压下BMBC的最佳制备工艺，其中Zn(Ac) ₂ ∙2H ₂ O是该酯交换反应的最佳催化剂，最佳浓度为0.3 wt%。通过用折光法测量反应过程中产生的甲醇量来确定转化率。根据实验结果提出了动力学模型。结果表明，酯交换反应为准一级反应。随着催化剂浓度从0.1 wt%增加到0.5 wt%，表观活化能（E _{a ）显着降低。}当催化剂浓度为0.1wt%、0.3wt%和0.5wt%时，_反应的E a 分别为102.13、84.36和70.18kJ mol -1 ^。进一步根据优化模型得到了间歇式反应器的最佳加热曲线参数。