Densities and viscosities for ionic liquids [BMIM][BF4] and [BMIM][Cl] and their binary mixtures at various temperatures and atmospheric pressure

doi:10.1016/j.cjche.2019.04.016

Abstract

Abstract: The density and viscosity of 1-butyl-3-methylimidazolium tetrafluoroborate [BMIM][BF₄] and 1-butyl-3-methylimidazolium chloride [BMIM][Cl] and their binary mixtures within the temperatures from 303.15 K to 323.15 K and at ambient pressure were determined in this work. The temperature dependences of density and viscosity were satisfactorily described with the linear model and the Vogel-Tammann-Fulcher type equation, respectively. The molar volume and viscosity of binary IL mixtures were predicted through ideal mixing rules showing that almost null deviations for IL mixtures were observed and their mixing was remarkably close to linear ideal behavior in the molar volumes, while comparatively large errors in viscosity occurred. Additionally, the molar volume of the investigated pure ILs and their mixtures could well be predicted by a predictive model presented by Valderrama et al. (Fluid Phase Equilib., 275 (2009) 145).

Key words: Ionic liquid mixture, Density, Viscosity, Excess property

摘要： The density and viscosity of 1-butyl-3-methylimidazolium tetrafluoroborate [BMIM][BF₄] and 1-butyl-3-methylimidazolium chloride [BMIM][Cl] and their binary mixtures within the temperatures from 303.15 K to 323.15 K and at ambient pressure were determined in this work. The temperature dependences of density and viscosity were satisfactorily described with the linear model and the Vogel-Tammann-Fulcher type equation, respectively. The molar volume and viscosity of binary IL mixtures were predicted through ideal mixing rules showing that almost null deviations for IL mixtures were observed and their mixing was remarkably close to linear ideal behavior in the molar volumes, while comparatively large errors in viscosity occurred. Additionally, the molar volume of the investigated pure ILs and their mixtures could well be predicted by a predictive model presented by Valderrama et al. (Fluid Phase Equilib., 275 (2009) 145).

关键词: Ionic liquid mixture, Density, Viscosity, Excess property

Jinlong Li, Hong Zhu, Changjun Peng, Honglai Liu. Densities and viscosities for ionic liquids [BMIM][BF₄] and [BMIM][Cl] and their binary mixtures at various temperatures and atmospheric pressure[J]. Chinese Journal of Chemical Engineering, 2019, 27(12): 2994-2999.

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Densities and viscosities for ionic liquids [BMIM][BF₄] and [BMIM][Cl] and their binary mixtures at various temperatures and atmospheric pressure

Densities and viscosities for ionic liquids [BMIM][BF₄] and [BMIM][Cl] and their binary mixtures at various temperatures and atmospheric pressure

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