Volumetric properties of room temperature ionic liquid 1. The system of {1-methyl-3-ethylimidazolium ethyl sulfate+water} at temperature in the range (278.15 to 333.15) K

Temperature and Composition Dependence of the Density and Viscosity of Binary Mixtures of Water + Ionic Liquid

“…[16][17][18][19][20][21][22] Most of the papers in the latter group, however, focus on ILs with either a halide or tetrafluoroborate as the anion, which may lead to corrosion problems or to generation of HF by decomposition. 23 An exception is the work of Yang and coworkers, 10,19 which focused on the density of the binary system water and 1-ethyl-3-methylimidazolium ethylsulfate ([emim]-[EtSO 4 ]). 24 In this work, accurate data at atmospheric pressure are reported for the density and viscosity of mixtures of water and three different ILs: [emim][EtSO 4 ], 1-ethyl-3-methylimidazolium trifluoroacetate ([emim][TFA]), and 1-ethyl-3-methylimidazolium trifluoromethanesulfonate ([emim][OTf]) at temperatures from (278.15 to 348.15) K. The temperature dependence of both properties is analyzed and correlated.…”

“…The knowledge of thermophysical properties of binary mixtures of water plus hydrophilic ILs is needed for the development of practical applications and design of processes using water + IL systems. To date, a number of papers have studied fundamental properties such as density or viscosity of these binary systems: some of them report values for dilute aqueous solutions of ILs − or, in the other extreme, the effect of water content in “pure” ILs or binary mixtures with low fractions of water; ,− whereas only some other works have performed measurements covering the whole composition range. − Most of the papers in the latter group, however, focus on ILs with either a halide or tetrafluoroborate as the anion, which may lead to corrosion problems or to generation of HF by decomposition . An exception is the work of Yang and co-workers, , which focused on the density of the binary system water and 1-ethyl-3-methylimidazolium ethylsulfate ([emim][EtSO 4 ]) …”

“…To date, a number of papers have studied fundamental properties such as density or viscosity of these binary systems: some of them report values for dilute aqueous solutions of ILs − or, in the other extreme, the effect of water content in “pure” ILs or binary mixtures with low fractions of water; ,− whereas only some other works have performed measurements covering the whole composition range. − Most of the papers in the latter group, however, focus on ILs with either a halide or tetrafluoroborate as the anion, which may lead to corrosion problems or to generation of HF by decomposition . An exception is the work of Yang and co-workers, , which focused on the density of the binary system water and 1-ethyl-3-methylimidazolium ethylsulfate ([emim][EtSO 4 ]) …”

Solute–Solvent Interactions of Alkyl Acetoacetates in Aqueous {1-Butyl-3-methylimidazolium Chloride [bmim][Cl]} Ionic Liquid Solutions in the Temperature Interval (288.15–308.15) K

“…Research on large scale industrial applications of room temperature ionic liquids (RTILs) has gained momentum in recent years. The radically advantageous properties − of ionic liquids make them an excellent choice for a variety of applications. − The data on the thermodynamic behavior of binary ionic liquid mixtures is abundant − but limited data is available for the binary mixtures of an ionic liquid and esters. − Here, in the present work, we introduce a new comprehensive database for the densities and speeds of sound of {1-butyl-3-methylimidazolium chloride [bmim]­[Cl]} with methyl acetoacetate (MAA) and ethyl acetoacetate (EAA) at temperatures T = (288.15, 293.15, 298.15, 303.15, and 308.15) K. The ion–solvent interactions in the mixtures have been evaluated using the partial molar properties. The interactions existing between different molecules can be interpreted using their thermodynamic behavior.…”

Thermal Conductivities of [EMIM][EtSO4], [EMIM][EtSO4] + C2H5OH, [EMIM][EtSO4] + H2O, and [EMIM][EtSO4] + C2H5OH + H2O atT= (283.15 to 343.15) K

“…It is necessary to know physicochemical properties of ILs + solvent mixtures to design these chemical engineering processes related to heat transfer. The density, viscosity, speed of sound, excess volume, isobaric expansivity, isothermal compressibility, activity coefficient, and molar conductivity of ILs + solvent mixtures had been studied. − However, the reports on the thermal conductivity which is necessary for the design of heat-transfer equipment are limited.…”