Evidence of change in the molecular organization of 1-n-butyl-3-methylimidazolium tetrafluoroborate ionic liquid solutions with the addition of water

Experimental measurement of the hygroscopic grade on eight imidazolium based ionic liquids

“…As we can observe, it takes about 100 h to saturate both samples. If we were stirring the samples it would absorb more water from atmosphere and it would take more time to be saturated as recently published [8]. The most interesting fact is that equimolar solution adsorbs about the same quantity of water than the pure sample with a similar speed rate, which explains why if we stir the sample it will continue adsorbing water.…”

“…The most interesting fact is that equimolar solution adsorbs about the same quantity of water than the pure sample with a similar speed rate, which explains why if we stir the sample it will continue adsorbing water. The equimolar aqueous solution adsorption can be easily explained knowing that the surface of that mixture is composed mainly by IL molecules, since if we compare the value of the surface tension of equimolar solutions of these IL with the pure ones, we observe both values are very similar [2,8]. It is necessary to perform new measurements to observe the dependence of the mass adsorption with temperature and pressure, but we guess that for small changes of temperature and pressure the water adsorption will not be greatly affected.…”

Density and surface tension of pure 1-ethyl-3-methylimidazolium l-lactate ionic liquid and its binary mixtures with water

“…[27] mixtures. The positive values of excess molar volume indicate a positive deviation from ideal behavior and suggest that water reduces and even breaks the strong electrostatic attractions between cations and anions of the pure IL during the mixing process [28].…”

“…Recently SO 3 ] À , and transitional metal (Ga, Al, Fe, In) chlorides [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26]. However, the measurement of physical properties of ILs mixed with different substances such as water was relatively limited [27][28][29][30].…”

Vibrational Spectroscopy for Studying Hydrogen Bonding in Imidazolium Ionic Liquids and their Mixtures with Cosolvents

“…The presence of water in ILs may affect many of their solvent properties such as polarity, viscosity and conductivity [30]. Moreover, water may also react with the constituents of ILs, e.g.…”