Water-soluble, triflate-based, pyrrolidinium ionic liquids

被引：27
|
作者：
Moreno, M. [1 ]
Montanino, M. [1 ]
Carewska, M. [1 ]
Appetecchi, G. B. [1 ]
Jeremias, S. [2 ]
Passerini, S. [2 ]
机构：
[1] ENEA, Agcy New Technol Energy & Sustainable Econ Dev, UTRINN IFC, I-00123 Rome, Italy
[2] Univ Munster, Inst Phys Chem, D-48149 Munster, Germany
来源：
ELECTROCHIMICA ACTA | 2013年 / 99卷
关键词：
Hydrophilic ionic liquid; N-butyl-N-methylpyrrolidinium trifluoromethanesulfonate; N-methoxyethyl-N-methylpyrrolidinium trifluoromethanesulfonate; EQUILIBRIA; SEPARATION; SYSTEMS; SALTS;
D O I：
10.1016/j.electacta.2013.03.046
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The physicochemical and electrochemical properties of the water-soluble, N-methoxyethyl-N-methylpyrrolidinium trifluoromethanesulfonate (PYR1(2O1)OSO2CF3) ionic liquid (IL) were investigated and compared with those of commercial N-butyl-N-methylpyrrolidinium trifluoromethanesulfonate (PYR14OSO2CF3). The results have shown that the transport properties are well correlated with the theological and thermal behavior. The incorporation of an oxygen atom in the pyrrolidinium cation aliphatic side chain resulted in enhanced flexibility of the ether side chain, this supporting for the higher ionic conductivity, self-diffusion coefficient and density of PYR1(2O1)OSO2CF3 with respect to PYR14OSO2CF3, whereas no relevant effect on the crystallization of the ionic liquid was found. Finally, the presence of the ether side chain material in the pyrrolidinium cation led to a reduction in electrochemical stability, particularly on the cathodic verse. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：108 / 116
页数：9
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