Liquid–liquid equilibria of 1-octyl-3-methylimidazolium hexafluorophosphate with 1-propanol or tert-butanol in the critical region

Liquid–Liquid Phase Equilibrium and Heat Capacity of Binary Mixture 1-Ethyl-3-methylimidazolium Bis(trifluoromethylsulfonyl)imide + 1-Propanol

“…In recent years, Anisimov and co-workers − extended the complete scaling theory − to incompressible and weakly compressible liquid mixtures, which pointed out that scaling fields should be the linear mixtures of all physical fields: the chemical potential of solvent μ 1 , the difference of chemical potential between solvent and solute Δμ, the temperature T , and the pressure P . The complete scaling theory has been verified by some experiments on binary molecular liquid mixtures; , however, only a few reports involved high-quality coexistence curve and heat capacity data in the critical region for binary RTIL mixtures. − …”

Asymmetric criticality of binary ionic solutions containing 1-butyl-3-methylimidazolium tetrafluoroborate and alcohol

“…In principle, the determination of the coefficients D ˆZ 2 and D ˆZ 1 can be achieved by fitting the experimental data of the diameter of the coexistence curve to eqn (18). However, it is nearly impossible practically due to the strong correlations among them, which may result in large uncertainties and failure in arriving at a proper conclusion.…”

“…However, it is nearly impossible practically due to the strong correlations among them, which may result in large uncertainties and failure in arriving at a proper conclusion. Therefore, an alternative route was taken: since the binary mixture we studied is incompressible or weakly compressible which results in a 3 E 0 and hence D ˆr 2 E 0 and D ˆrx 2 E 0 in eqn ( 14), the expressions of the diameter for density variables x, r and rx may be derived from eqn (18) as…”

“…8 Some systems may carry the characters of both coulombic systems and solvophobic systems. 17,18 It is commonly accepted 19 that for fluids and fluid mixtures of the 3D-Ising universality class, various thermodynamic properties can be described by the universal power-law of the reduced temperature DT ˆ(D T ¼ T À T c T c , with T c being the critical temperature) in the close vicinity of the critical point:…”

“…the chemical potential of solvent m 1 , the difference of chemical potential between solvent and solute Dm, the temperature T and the pressure P. Our previous investigations on binary systems of benzonitrile + n-alkane, dimethyl carbonate + n-alkane, and nitrobenzene + n-alkane showed that the complete scaling theory can well represent the experimental asymmetric behavior of the diameter of the coexistence curves. [24][25][26] Some investigations involving the application of the complete scaling theory to describe the asymmetric criticality of ionic solutions have been reported; 12,17,18,[27][28][29] however the contribution of the heat capacity in ionic solutions has been rarely considered, 12,17 which requires precise heat capacity data in both critical and non-critical regions.…”