Interfacial tensions of imidazolium-based ionic liquids with water and n-alkanes

Effect of different families (imidazolium and pyridinium) of ionic liquids-based surfactants on interfacial tension of water/crude oil system

“…In addition, phase inversion temperature (PIT) might be effective when the IFT(s) of the solutions prepared by these four ILs and crude oil are altered by temperature. As described in our previous work [26], these obtained results can be related to variation in surfactant distribution between oil and water as well as the emulsions inverting from oil-in-water at low temperatures to water-in-oil as the temperature increases. The temperature corresponding to a minimum in interfacial tension is known as the phase inversion temperature (PIT).…”

“…In the present study the feasibility of ILs There seem to be few systematic investigations on the effect of ILs on the IFT reduction of crude oil + water system except those reported by the authors [24,25]. For example, Gardas et al [26] have reported interfacial tensions of several 1,3-dialkyl imidazolium based ionic liquids, including 1-alkyl-3methylimidazoliumbis {(trifluoromethyl)sulfonyl} imide with alkyl change length of C 1 -C 8 , with water and with the n-alkanes, n-hexane, n-octane and n-decane using the pendant drop method as a function of temperature from 293 to 323 K [26]. Table 1).…”

Use of Aromatic Ionic Liquids in the Reduction of Surface Phenomena of Crude Oil–Water System and their Synergism with Brine

“…This trend is also similar to that reported in our previous work. 2 For ease of understanding, the data corresponding to one particular IL, [C 4 mim] + [Cl] − , is reported in Table 4. The IFT data of the other ILs are given as Supporting Information (Tables S10−S17).…”

“…The observed trend may also be attributed to the increase in the van der Waals interactions taking place between the alkyl chains of the IL and the oil. 2 The anionic part of the IL is also seen to have a noteworthy impact on the IFT. The experimental IFT data in this study for the [C 4 mim] + based ILs with crude oil, with respect to the anion, is found to decrease as 6 ] − with air is 44.03 mN/m and crude oil with air is 38.14 mN/m.…”

Water-soluble complexes of hydrophobically modified polymer and surface active imidazolium-based ionic liquids for enhancing oil recovery

“…It seems to be a few investigations on the interfacial tension (IFT) of ILs solution/oil system were reported [10,[16][17][18][19][20][21]. Those authors recognized its desired behavior at high salinity and temperature.…”