Interactions of Imidazolium Based Ionic Liquids with Water Studied by Density and Speed of Sound Measurements: Effect of the Chain Length of an Alkyl Substituent on the Imidazolium Ion

被引：11
作者：
Ayranci, Erol [1 ]
Sahin, Elif Merve [1 ]
机构：
[1] Akdeniz Univ, Dept Chem, Fac Sci, TR-07058 Antalya, Turkey
来源：
JOURNAL OF SOLUTION CHEMISTRY | 2018年 / 47卷 / 02期
关键词：
Apparent molar volume; Apparent molar isentropic compression; Ionic liquids; Solute-solvent interactions; 1-BUTYL-3-METHYLIMIDAZOLIUM TETRAFLUOROBORATE; THERMOPHYSICAL PROPERTIES; VOLUMETRIC PROPERTIES; AQUEOUS-SOLUTIONS; BINARY-MIXTURES; 1-HEXYL-3-METHYLIMIDAZOLIUM TETRAFLUOROBORATE; PHYSICAL-PROPERTIES; REFRACTIVE-INDEX; 298.15; K; TEMPERATURE;
D O I：
10.1007/s10953-018-0724-1
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：
Densities and speeds of sound of three ionic liquids (ILs), 1-ethyl-3-methyl imidazoliumtetrafluoroborate (C(2)mimBF(4)), 1-butyl-3-methylimidazoliumtetrafluoroborate (C(4)mimBF(4)) and 1-hexyl-3-methylimidazoliumtetrafluoroborate (C(6)mimBF(4)) were measured in aqueous solutions at (288.15, 293.15, 298.15, 303.15 and 308.15) K. These data were used to calculate the volumetric properties apparent molar volume and apparent molar isentropic compression as a function of molality. Infinite dilution values for these properties were evaluated by an extrapolation procedure based on Redlich-Meyer type equations. Apparent molar isobaric expansions at infinite dilution were also obtained from the slopes of the apparent molar volume at infinite dilution versus temperature. All these properties are interpreted in terms of IL-water interactions. The hydrolysis of the anion of the ILs and its effects on the results is discussed.
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页码：246 / 261
页数：16
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