Excess molar volumes and isentropic compressibility of binary systems {trioctylmethylammonium bis(trifluoromethysulfonyl)imide+methanol or ethanol or 1-propanol} at different temperatures

Volumetric and transport properties of N-Butyl-N-methylpyrrolidinium bis(Trifluoromethanesulfonyl)imide–methanol binary mixtures

“…Such behavior can be explained by hydrogen bonding and dipole-dipole interactions being T-independent. Finally, the negative and positive extrema of excess volume are unusual and similar results are obtained [44,45].…”

Ternary excess molar volumes of {methyltrioctylammonium bis(trifluoromethylsulfonyl)imide+ethanol+methyl acetate, or ethyl acetate} systems at T=(298.15, 303.15, and 313.15)K

“…The water content in the solvents was determined by using Karl-Fischer coulometer [Metrohm797] and the mass fraction water content was found to be 4 Á 10 À4 in IL, 4 Á 10 À5 in methanol, 6 Á 10 À5 in methyl acetate and 6 Á 10 À5 in ethyl acetate. The purity of the solvents was assessed by a comparison of the experimental density value with the density value reported in the literature where available [26,27].…”

“…In the ternary system, there are complex interactions between the cation of the IL and the lone pair of electrons on ethanol and methyl acetate or ethyl acetate which make the latter strong proton accepters [21]. This work is a continuation of our research work on thermodynamic properties of ILs [18,19,[22][23][24][25][26]. The structure of the ionic liquid used in this work is presented in figure 1.…”

“…The mixture was shaken to ensure complete homogeneity of the three components and the injection of the mixture into the densimeter was done slowly to avoid formation of bubbles inside the vibrating tube of the densimeter. For each temperature, the instrument had to be switched off and set to the required temperature with the solution in the U-tube [26].…”

Application of the PFV EoS correlation to excess molar volumes of (1-ethyl-3-methylimidazolium ethylsulfate+alkanols) at different temperatures

“…The partial molar volumes were calculated from the Redlich-Kister correlation coefficients. This work is a continuation of our research group's work on thermodynamic properties of ILs [20][21][22][23][24][25][26].…”