Liquid–Liquid Equilibrium for the Ternary System 2,2,3,3,4,4,5,5-Octafluoro-1-pentanol + Ethanol + Water at (298.15, 308.15, and 318.15) K

Abstract

Liquid−liquid equilibrium (LLE) data for the ternary system 2,2,3,3,4,4,5,5-octafluoro-1-pentanol + ethanol + water have been reported at (298.15, 308.15, and 318.15) K and 0.1 MPa. The Bachman equation and the Hand equation were used to confirm the reliability of the experimental tie-line data. The experimental data were correlated by the nonrandom two-liquid (NRTL) model, for which the calculated results show good agreement with the ternary LLE data, and the binary interaction parameters of NRTL model were also regressed. Moreover, the distribution coefficients and separation factors in the ternary system were determined by the experimental data.

Liquid-liquid phase equilibrium and interaction exploration for separation of azeotrope (2,2,3,3-tetrafluoro-1-propanol + water) with two imidazolium-based ionic liquids

“…was fixed with the mass of TFP decreased and that of water increased. [30] Then, the prepared mixed solution was discharged into the specific LLE equilibrium cell [31] with a sample port near the bottom. To ensure the mixing completely, the mixed solutions were agitated for 3 h using a magnetic stirrer at speed of 1000 rpm in a water bath.…”

Liquid–Liquid Equilibrium of Isobutyl Acetate + Isobutyl Alcohol + Imidazolium-Based Ionic Liquids at 298.15 and 308.15 K

“…Since IBAC can form a minimum boiling point azeotrope with IBA, IBAC cannot be separated from the reaction mixture by conventional distillation. Generally, to separate azeotropic mixtures, some special distillation technologies are required, such as extractive distillation, ,− pressure-swing distillation, , azeotropic distillation. , In addition, liquid–liquid extraction − is also often used to separate the azeotrope because of its ability to save energy.…”

Comparative evaluation of liquid–liquid equilibria for extraction of 2,2,3,3‐tetrafluoro‐1‐propanol from water by a ZIF‐8‐porous ionic liquid

“…For LLE measurement, ternary mixtures (water + TFP + ZIF‐8‐PIL/IL) were prepared according to the literature 5,18 . The mixtures were prepared in a specific phase equilibrium glass vial 31 placed in a thermostatic water bath (SC‐15, Nanjing Shunma Instrument Equipment Co. Ltd).…”

“…For energy reduction in processing, operations at moderate conditions and via the use of liquid–liquid extraction are adopted where possible for the separation of azeotropic mixtures 5,17,18 . Li et al 19 .…”