Ether-Functionalized Imidazolium Hexafluorophosphate Ionic Liquids for Improved Water Miscibilities
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- 作者：Henri S. Schrekker ; Marcelo P. Stracke ; Clarissa M. L. Schrekker ; Jairton Dupont
- 刊名：Industrial & Engineering Chemistry Research
- 出版年：2007
- 出版时间：October 24, 2007
- 年：2007
- 卷：46
- 期：22
- 页码：7389 - 7392
- 全文大小：42K
- 年卷期：v.46,no.22(October 24, 2007)
- ISSN：1520-5045
文摘
The hexafluorophosphate anion of 1-alkyl-3-methylimidazolium ionic liquids is responsible for their poorwater miscibility. Transformation of the hexafluorophosphate ionic liquids into water miscible liquids bystructural modifications in the imidazolium cation could result in new applications. Improved water miscibilitieswere achieved with 1-alkyl ether-3-methylimidazolium hexafluorophosphate ionic liquids. Especially, ionicliquid 1-triethylene glycol monomethyl ether-3-methylimidazolium hexafluorophosphate 5 showed a stronglyincreased water miscibility range at 30 C, which was further enhanced in the presence of ethanol as cosolvent.Besides, a complete water miscibility of 5 was observed at an elevated temperature of 50 C. This knowledgemay facilitate the predictive development of new task-specific ionic liquids.