Vapor−Liquid Equilibrium and Liquid−Liquid Equilibrium of Methyl Acetate + Methanol + 1-Ethyl-3-methylimidazolium Acetate

Abstract

Vapor−liquid equilibrium (VLE) and liquid−liquid equilibrium (LLE) were measured for the ternary system of methyl acetate + methanol + 1-ethyl-3-methylimidazolium acetate ([EMIM][Ac]). The experimental LLE data were correlated by the NRTL model and the binary interaction parameters obtained from LLE were used to predict the ternary VLE, and the results agreed well with the experimental data. The results showed that the ionic liquid ([EMIM][Ac]) produced a notable salting-out effect, which enhanced the relative volatility of methyl acetate and methanol.

Study of Ionic Liquids as Entrainers for the Separation of Methyl Acetate–Methanol and Ethyl Acetate–Ethanol Systems Using the COSMO-RS Model

“…40 The solubility of the ionic liquid has a great impact on the relative volatility of the nonaqueous mixture and that the interactions between methanol and ionic liquid are very strong due to hydrogen bonding of solvation. 52 Cai et al 22 Table 1). Figure 2.…”

“…18 and Cai et al 22 by varying the concentrations under isobaric conditions. The T− x−y data were obtained and compared with literature data.…”

“…Orchilles et al 18,19 20 They also studied the vapor liquid equilibrium of ethyl acetate−ethanol using 1-alkyl-3-methylimdazolium tetrafluoroborate at 101.32 kPa. 21 Cai et al 22 24 In the present work, methyl acetate−methanol and ethyl acetate− ethanol systems were chosen since these are important solvents in industry. These nonaqueous azeotropic mixtures are used in the poly vinyl alcohol manufacturing process 22,23 and in the process of esertification, 24 among others.…”

A study on the liquid–liquid equilibrium of 1-alkyl-3-methylimidazolium dialkylphosphate with methanol and dimethyl carbonate

“…This model has provided adequate correlating capability for the ternary systems involving ILs [23][24][25][26]. The NRTL expression for the activity coefficients in multicomponent systems is given in Eq.…”

Liquid–liquid equilibria for ternary systems ethanol+heptane+phosphoric-based ionic liquids

“…This model has been proved a good capacity in correlating the LLE data of different ternary systems [41][42][43][44]. The activity coefficients in multicomponent systems were calculated by the NRTL model: …”