Physicochemical Investigations of a Binary Mixture Containing Ionic Liquid 1-Butyl-1-methylpyrrolidinium Bis(trifluoromethylsulfonyl)imide and Diethyl Carbonate

Abstract

Densities, viscosities, and electrical conductivities were determined and discussed for a binary mixture containing 1-butyl-1-methylpyrrolidinium bis­(trifluoromethylsulfonyl)­imide ionic liquid, [bmpyrr]­[NTf2], and diethyl carbonate (DEC) as a function of temperature (T = 293.15–323.15 K) at atmospheric pressure (p = 0.1 MPa) over the entire range composition. Based on experimental density data, the related excess molar volumes were calculated and fitted using Redlich–Kister’s polynomial equation. The Casteel–Amis equation was used to correlate data obtained from electrical conductivity measurements. The effect of viscosity on electrical conductivity was discussed by the Walden rule. The Bahe–Varela theory, derived from the the pseudo-lattice model, has been successfully applied to explain the influence of the mixture composition on electrical conductivity. Based on physicochemical characterization supported with computational simulations for binary mixtures ([bmpyrr]­[NTf2] + DEC), the interactions between these components were discussed.

A study on the viscosity, density, and derivative properties of 1-alkyl-3-methylimidazolium bis((trifluoromethyl)sulfonyl)imides with benzo-15-crown-5 binary mixtures

“…The Eyring kinetic equation (1) 27,28 and the Vogel–Fulcher–Tammann (VFT) equation (2) 28–32 are regularly used to characterize the dependence of viscosity on temperature…”

“…26 In addition, increasing the temperature leads to a reduction in the strength of intermolecular interactions, which reduces the viscosity. The Eyring kinetic equation ( 1) 27,28 and the Vogel-Fulcher-Tammann (VFT) equation ( 2) [28][29][30][31][32] are regularly used to characterize the dependence of viscosity on temperature…”

Thermodynamics Properties and Internal Interactions of Ether-Group Functionalized Thiocyanate Ionic Liquid 1-(2-Methoxyethyl)-3-Methylimidazolium Thiocyanate and Its Mixtures with 1,4-Butyrolactone or Propylene Carbonate

“…Low viscosity is the main requirement for potential applications of ILs, which can directly affect conductivity, diffusivity, dispersion, mixing, filtration, and even equipment selection . Due to the high viscosity of ionic liquids, its conductivity is relatively low, and therefore, they often mix/dilute organic solvents such as acetonitrile, GBL, and PC. , Vraneš et al investigated the volumetric properties and transport properties of ionic liquid [bmim]­[NTf 2 ] and the PC mixture system as a function of temperature and composition, and the volumetric properties of n -methyl-2-pyrrolidone binary mixtures with GBL and PC were also been invenstigated . Papović, et al synthesized six binary systems of based ionic liquids [emim]­[NTf 2 ] with GBL and studied the influence of the composition on the electrical conductivity of (IL + GBL) binary mixtures …”

Metal-Free, Ionic Liquid-Mediated Hydrogen Release from Amine Borane Complexes: An Experimental and Density Functional Theory Investigation

“…ILs based on [CH 3 COO – ] anions are usually liquid above 0 °C and exhibit low viscosity, rendering them as beneficial solvents for various applications. The low melting point, high conductivity, and low viscosity accord the methyl carbonate anions with better fluidity . In light of a recent study, it is anticipated that the ILs composed of the same group of anions can act as a catalytic solvent.…”

“…The low melting point, high conductivity, and low viscosity accord the methyl carbonate anions with better fluidity. 26 In light of a recent study, it is anticipated that the ILs composed of the same group of anions can act as a catalytic solvent. In the dehydrogenation study of amine boranes to date, imidazolium-and phosphonium-based ILs have so far been extensively investigated.…”