| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 201488 | Fluid Phase Equilibria | 2015 | 6 Pages |
•A ternary system water + octane + 2-butyloxyethanol was chosen.•The fish-shaped phase diagram of the ternary system was reported.•The upper and lower critical solution temperatures of the system were, respectively, 296.90 and 286.10 K.•LLE data for this ternary system were determined at T = 283.15, 293.15 and 303.15 K under atmospheric pressure.•The NRTL model was applied to correlate the experimental data.
Experiment of the fish-shaped phase diagram of the ternary water + octane + 2-butyloxy-ethanol system under atmospheric pressure was performed at constant water/octane mass ratio (1/1) to determine the upper critical solution temperature (UCST = 296.90 ± 0.05 K) and the lower critical solution temperature (LCST = 286.10 ± 0.05 K). The liquid–liquid equilibria of the water + octane + 2-butyloxy-ethanol system at 283.15, 293.15 and 303.15 K were measured under atmospheric pressure. At 283.15 and 303.15 K, there is only one two-liquid-phase-coexisting envelop in the triangle phase diagram. At 293.15 K, in-between the UCST and LCST, the system exhibits three two-liquid-phase-coexisting envelops and one three-liquid-phase-coexisting tie triangle in the triangle phase diagram. The experimental results of liquid–liquid equilibria were further correlated with the nonrandom two-liquid (NRTL) model.
