Liquid−Liquid and Vapor−Liquid−Liquid Equilibrium of the 4-Methyl-2-pentanone + 2-Butanol + Water System

Abstract

LiquidÀliquid equilibrium (LLE) data have been measured for the ternary system 4-methyl-2 pentanone þ 2-butanol þ water at (283.15 and 333.15) K. Experimental results show a low influence of temperature on immiscibility zone size and shape. The NRTL and UNIQUAC models were applied to correlate the ternary system at (283.15 and 333.15) K, and the interaction parameters obtained from both models successfully correlated the equilibrium compositions. Moreover, isobaric vaporÀliquidÀliquid equilibrium (VLLE) is measured for this ternary mixture at 101.3 kPa. The experimental data were compared with the estimation from LLE binary interaction parameters using NRTL and UNIQUAC models, as well as the correlation obtained with these models. The prediction of the UNIFAC LL model has been obtained and compared with the previous results, to confirm the necessity to obtain experimental data in this type of system.

Calculation of ternary liquid‐liquid equilibrium data using arc‐length continuation

“…Calculated binodal solubility curve (red line) and experimental data (blue dots) 31 for the system 2‐butanol‐MIBK‐water (1 bar, 20°C). Dashed blue lines: experimental tie lines…”

“…The miscibility bimodal curve of the system MIBK‐2‐butanol‐water at 20°C (1 bar) shows a solubility gap for the binary solvent (MIBK)/diluent (water) and another gap for the binary solute/diluent (2‐butanol/water), while solute and solvent are totally miscible. Figure 9 depicts the experimental tie lines data 31 and the generated binodal curve basing on the UNIQUAC parameters from Reference 31. The RMSD between experimental and calculated tie line compositions (Table 7) is 0.61.…”

Density, Speed of Sound, and Refractive Index Measurements for Mixtures of n-Heptane with Pentan-2-one or 4-Methylpentan-2-one for T = 298.15–338.15 K and 0.101 MPa

“…Further information regarding the device can be found in the instruction material. 6 Two fluid calibration with distilled de-ionized water and dry air was used to calibrate the device in the temperature range of T = 298.15−338.15 K, and daily density checks were 20 1.3933 25 0.79619 21 1.39362 26 0.79594 22 1.3934 27 0.796 23 1.3935 performed to confirm that the measurement precision did not deplete over the measurement period. RI measurements were performed using an ATAGO RX-7000α refractometer (sodium D-line = 589 nm) with a supplier uncertainty of 0.00001 for the RI.…”

Liquid–Liquid Equilibrium for the Ternary System 2-Methyl-2-propanol + 1-Pentanol + Water at T = (303.15, 328.15, and 353.15) K

“…Ghizellaoui et al 6 also had measured the LLE data for the above system at T = (298.15 and 323.15) K. For the ternary system 3-methyl-1-butanol + methanol + water and 2-methyl-1-propanol + ethanol + water, eight tie-line data at 293.15 K were reported by Kadir and his colleagues. 7 LLE of the 4-methyl-2-pentanone + 2-methanol + water system was investigated by Lladosa et al 8 The solubility curve and six tie-line data for the 2-butanol + 1-hexanol + water at 298.15 K were supplied by Gilani. 9 Several systems (e.g., water + 1-butanol + 2-ethyl-1-hexanol 10 and water + ethanol + 2-ethyl-1-hexanol 11 ) were studied by Ghanadzadeh.…”

“…In recent years, LLE had been studied in detail by numerous prominent scholars, and a large amount of LLE data are available. − For example, the influence of temperature on LLE of the ternary system 1-pentanol + 1-propanol + water was researched by Fernández et al, and three tie-line data at different temperatures were given. Ghizellaoui et al also had measured the LLE data for the above system at T = (298.15 and 323.15) K. For the ternary system 3-methyl-1-butanol + methanol + water and 2-methyl-1-propanol + ethanol + water, eight tie-line data at 293.15 K were reported by Kadir and his colleagues .…”