Citation: Hefang Wang, Liyuan Ji, Rongbin Hu, Meidan Gao, Yanji Wang. One-pot conversion of cyclohexanol to ε-caprolactam using a multifunctional Na₂WO₄-acidic ionic liquid catalytic system[J]. Chinese Journal of Catalysis, ;2017, 38(1): 58-64. doi: 10.1016/S1872-2067(16)62563-9 shu

One-pot conversion of cyclohexanol to ε-caprolactam using a multifunctional Na₂WO₄-acidic ionic liquid catalytic system

School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China

Received Date: 30 September 2016
Revised Date: 24 October 2016

Fund Project: This work was supported by the National Natural Science Foundation of China (20636030, 2090618, 21236001) and the Natural Science Foundation of Hebei Province (B2017202226).

Na₂WO₄-acidic ionic liquid was used as a simple, ecofriendly, recyclable and efficient catalytic sys-tem for the one-pot conversion of cyclohexanol to ε-caprolactam. The effect of the structure of the ionic liquid on the catalytic activity of this system was investigated, and the results revealed that sulfonic acid-functionalized ionic liquids with HSO₄^- as an anion gave the best results. The highly efficient performance of this catalyst system was attributed to the phase-transfer behavior of the cation of the ionic liquid, the improved coordination of the substrate to bisperoxotungstate during the oxidation reaction, and the stabilization of the intermediate formed during the Beckmann rear-rangement.
- Cyclohexanol,
- ε-Caprolactam,
- One-pot synthesis,
- Acidic ionic liquid,
- Cyclohexanone oxime
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沈阳化工大学材料科学与工程学院沈阳 110142

One-pot conversion of cyclohexanol to ε-caprolactam using a multifunctional Na2WO4-acidic ionic liquid catalytic system

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通讯作者: 陈斌, bchen63@163.com

One-pot conversion of cyclohexanol to ε-caprolactam using a multifunctional Na₂WO₄-acidic ionic liquid catalytic system