Structure of aqueous solutions of ionic liquid 1-butyl-3-methylimidazolium tetrafluoroborate by small-angle neutron scattering

被引：63
|
作者：
Almasy, L. [1 ]
Turmine, M. [2 ]
Perera, A. [3 ]
机构：
[1] Helsinki Univ Technol, Ctr New Mat, Dept Engn Math & Phys, FI-02015 Espoo, Finland
[2] Univ Paris 06, Lab Electrochim & Chim Analyt, UMR CNRS 7575, F-75252 Paris 05, France
[3] Univ Paris 06, Lab Phys Theoret Mat Condensee, UMR CNRS 7600, F-75252 Paris 05, France
来源：
JOURNAL OF PHYSICAL CHEMISTRY B | 2008年 / 112卷 / 08期
关键词：
D O I：
10.1021/jp076185e
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The structure of aqueous solutions of a prototype ionic liquid, the short alkyl chain 1-butyl-3-methylimidazoliumtetrafluoroborate([C(4)mim][BF(4)]) has been investigated by small-angle neutron scattering. Concentration fluctuations and Kirkwood-Buff integrals have been calculated, and the results are in good agreement with corresponding data calculated herein from vapor pressure measurements. The large concentration fluctuations and Kirkwood-Buff integral values indicate that the system is in the vicinity of phase separation, which is known to occur some 20 K below room temperature, at a salt mole fraction of around 0.075.
引用
收藏
页码：2382 / 2387
页数：6
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