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Determination of physical properties for the mixtures of [BMIM]Cl with different organic solvents

Physical properties including refractive index, density, viscosity and conductivity for binary mixtures of l-butyl- 3-methyl imidazolium chloride ([BMIM]CI) and different organic solvents at 298.15 K have been investigated. Ex- cess molar volumes have been calculated and obtained data has been fitte...

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Published in:Chinese journal of chemical engineering 2015-05, Vol.23 (5), p.804-811
Main Authors: Saba, Hina, Zhu, Xinjun, Chen, Ye, Zhang, Yumei
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description Physical properties including refractive index, density, viscosity and conductivity for binary mixtures of l-butyl- 3-methyl imidazolium chloride ([BMIM]CI) and different organic solvents at 298.15 K have been investigated. Ex- cess molar volumes have been calculated and obtained data has been fitted by the Redlich-Kister equation. The density and refractive index were found to increase with increasing concentration of [BMIM]CI, however, excep- tions do exist as in the case of dimethyl sulfoxide (DMSO)/[BMIM]CI. For DMSO/[BMIM]CI, the density decreases with increasing concentration. The addition of different organic solvents was able to disrupt the interactions within mixtures, leading to free mobility of ions. The free mobility of ions has been found to enhance conductivity and decrease viscosity to varying extents in all mixtures studied. It has been observed that solubility parameters, dielectric constants and composition of the solvents used play a vital role in determining the resultant properties. The data obtained will play an important role in understanding the effect of the addition of organic solvents in ILs to enhance their applicability.
doi_str_mv 10.1016/j.cjche.2014.06.039
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subjects Binary mixtures
Conductivity
Density
DMSO
Ionic liquid
Mathematical analysis
Organic solvents
Physical properties
Refractive index
Refractivity
Solvents
Viscosity
二元混合物
有机溶剂
测定
浓度增加
物理性能
自由离子
title Determination of physical properties for the mixtures of [BMIM]Cl with different organic solvents
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