离子液体在环己酮肟Beckmann重排反应中的研究进展

doi:10.16085/j.issn.1000-6613.2017-2095

摘要/Abstract

摘要： 己内酰胺（CPL）是一种重要的有机化工原料。传统的环己酮肟贝克曼（Beckmann）重排法制备己内酰胺是以发烟硫酸为催化剂的生产工艺，存在污染环境、腐蚀设备、能源浪费等不足。基于绿色化工理念，本文综述了离子液体用于环己酮肟贝克曼重排反应合成己内酰胺的研究进展，重点阐述了离子液体作为溶剂、催化剂和反应物3种作用方式在Beckmann重排反应中的最新应用，同时针对离子液体与产物分离困难的问题，讨论了目前文献中的解决方法。在此基础上，分析了离子液体用于Beckmann重排反应在未来的研究方向，并指出设计适宜的离子液体结构、调变酸性性能、降低CPL在离子液体中的溶解度是今后的研究重点。

关键词: 离子液体, 催化, 溶剂, 环己酮肟, 贝克曼重排, 己内酰胺

Abstract: Caprolactam (CPL) is an important organic chemical raw material. Traditionally, fuming sulfuric acid was used as the catalyst for preparation of caprolactam through the cyclohexanone oxime Beckmann rearrangement reaction. However, there are some drawbacks for the method such as environment pollution, equipment corrosion and waste of energy. Based on the concept of green chemistry, the research progress of using ionic liquids to replace sulfuric acid for the synthesis of caprolactam was reviewed. The applications of ionic liquids as solvent, catalyst and reactant in the Beckmann rearrangement were introduced. Meanwhile, some resolutions to the problems in separation of ionic liquids from the product in literature were introduced. Future research directions for the application of ionic liquids in the Beckmann rearrangement reaction were also outlined and it is pointed out that the structure design of ionic liquids, the adjustment of the acid properties and the reduction of the solubility of CPL in ionic liquids should be the focus.

Key words: ionic liquids, catalysis, solvents, cyclohexanone oxime, Beckmann rearrangement, caprolactam

中图分类号:

杨瀚森, 李志会, 王晓曼, 徐元媛, 薛伟, 张东升, 赵新强, 王延吉. 离子液体在环己酮肟Beckmann重排反应中的研究进展[J]. 化工进展, 2018, 37(11): 4337-4342.

Research advances of ionic liquids in Beckmann rearrangement of cyclohexanone oxime YANG Hansen, LI Zhihui, WANG Xiaoman, XU Yuanyuan, XUE Wei, ZHANG Dongsheng, ZHAO Xinqiang, WANG Yanji. Research advances of ionic liquids in Beckmann rearrangement of cyclohexanone oxime[J]. Chemical Industry and Engineering Progress, 2018, 37(11): 4337-4342.

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