Volumetric Properties of Binary Mixtures Containing Ionic Liquids and Some Aprotic Solvents

Abstract

Densities of six binary mixtures containing the ionic liquid 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide or 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide mixed with tetrahydrofuran or acetonitrile or dimethyl sulfoxide were determined at atmospheric pressures in the temperature range between 293.15 K and 313.15 K. On the basis of the experimental densities, excess molar volumes were calculated. Comparison of excess molar volumes of six binary systems reveals the slight influence of the IL's cation on these physical properties and the small temperature dependence of V E for systems containing dimethyl sulfoxide.

Thermophysical Properties of 1-Butyl-3-Methylimidazolium Bis(trifluoromethylsulfonyl)imide at High Temperatures and Pressures

“…The four density results of Geppert-Rybczyńska et al (2010) are compared with our density results and an average deviation of Δρ/ρ = ±0.0087% is obtained.…”

“…The measured (p,ρ,T) Jacquemin et al (2007); , Harris et al (2007); , Katsuta et al (2010);, Geppert-Rybczyńska et al (2010); , Vranes et al (2012).…”

“…Geppert- Rybczyńska et al (2010) studied the densities of pure as well as six binary mixtures containing the ionic liquid 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide mixed with tetrahydrofuran or acetonitrile or dimethyl sulfoxide at atmospheric pressures in the temperature range between T = (293.15 K and 313.15) K using a vibratingtube densimeter (model Anton Paar DMA 602) to determine excess molar volumes of solutions. Vranes et al (2012) There are no density values above p = 59.10 MPa;…”

Temperature dependence measurements and molecular interactions for ammonium ionic liquid with N-methyl-2-pyrrolidone

“…The knowledge of thermophysical properties of mixed solvents of ILs with organic molecular liquids are paramount for the design of many technological processes and required for any practical applications [16][17][18][19][20][21]. Although a qualitative connection between the macroscopic and microscopic features is feasible, quantitative conclusions are of interest to both academic and industry communities.…”

“…Although a qualitative connection between the macroscopic and microscopic features is feasible, quantitative conclusions are of interest to both academic and industry communities. In spite of the importance of properties of ILs in different solvent media, only a small amount of physicochemical data is available in the literature, which mainly characterises ILs [21][22][23][24][25][26][27]. The temperature dependent properties are perhaps the significant properties that will govern use of ammonium ILs with polar solvent mixtures in most chemical industrial, pharmaceutical and biotechnological applications.…”