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

页码：2382 / 2387

页数：6

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