乙基吗啉类离子液体催化甲醛合成三聚甲醛反应动力学研究  

Study on Reaction Kinetics of Ethylmorpholine Ionic Liquid Catalyzing the Synthesis of Trioxane

作　　者：王大六 李丹 WANG Da-liu;LI Dan(Anhui Province Chuangmei Environmental Protection Science Co.,Ltd.,Anhui Lu an 237000,China)

机构地区：[1]安徽省创美环保科技有限公司,安徽六安237000

出　　处：《广州化工》2022年第5期81-84,共4页GuangZhou Chemical Industry

摘　　要：通过对自制的乙基吗啉类离子液体催化甲醛缩合反应制备三聚甲醛的动力学进行了研究,对自制的离子液体进行了^(1)H-NMR表征,同时考察了甲醛浓度、反应温度与反应时间的关系,通过初速度法计算反应动力学,得到了离子液体催化甲醛制三聚甲醛的反应速率方程,同时逆反应活化能稍低于正反应的活化能,为推动反应正向进行,反应时需要将产品三聚甲醛不断移出。Through studying the kinetics of preparing trioxane by the self-made ethylmorpholine ionic liquid catalyzed by the condensation reaction of formaldehyde, the self-made ionic liquid was characterized by ^(1)H-NMR,and the relationship between formaldehyde concentration, reaction temperature and time was investigated. The reaction kinetics was calculated by the initial velocity method, and the reaction rate equation of ionic liquid catalyzed formaldehyde to trioxane was obtained. At the same time, the reverse reaction activation energy was slightly lower than the forward reaction activation energy. In order to promote the forward reaction, it was necessary to continuously remove the product trioxane during the reaction.

关 键 词：甲醛 三聚甲醛 离子液体 反应动力学 

分 类 号：TQ203.3[化学工程—有机化工]