Synthesis of Methacrylic Anhydride by Batch Reactive Distillation: Reaction Kinetics and Process
Synthesis of Methacrylic Anhydride by Batch Reactive Distillation: Reaction Kinetics and Process
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DOI：
10.1021/ie501607v
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发表时间：
2014-10
影响因子：
4.2
通讯作者：
Hongxin Wang;Xiangwei Bu;Zhixian Huang;Yang Jin-bei;T. Qiu
中科院分区：
文献类型：
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作者：
Hongxin Wang;Xiangwei Bu;Zhixian Huang;Yang Jin-bei;T. Qiu
采用间歇式搅拌槽反应器，以甲基丙烯酸和乙酸酐为原料，研究了常压下合成甲基丙烯酸酐的反应动力学。反应在343.15 ~ 363.15 K的不同温度和不同的起始反应物组成下进行。描述了一个二阶均相可逆反应。采用间歇式反应精馏塔制备甲基丙烯酸酐。考察了进料摩尔比、回流比和夹带剂对反应的影响，得出了适宜的操作参数。在此条件下，甲基丙烯酸的转化率为99.95%，甲基丙烯酸酐的收率为86.99%。
The reaction kinetic of the synthesis of methacrylic anhydride was investigated with a batch stirred-tank reactor at atmospheric pressure using methacrylic acid and acetic anhydride as raw materials. The reactions were conducted at several temperatures between 343.15 and 363.15 K and at various starting reactant compositions. A homogeneous reversible reaction of the second order was described. A batch reactive distillation column was employed to obtain methacrylic anhydride. The influence of feed molar ratio, reflux ratio, and entrainer on the reaction was investigated, and a suitable operating parameter was obtained. Under these conditions, the conversion of methacrylic acid was 99.95%, and the yield of methacrylic anhydride was 86.99%.