Liquid−Liquid Equilibria for the Ternary Systems Water + 3-Methyl-2-cyclopentenone with Ethyl Acetate or Methyl tert-Butyl Ether at 293.2 K

Abstract

The liquid−liquid equilibria for water + 3-methyl-2-cyclopentenone + ethyl acetate and water + 3-methyl-2-cyclopentenone + methyl tert-butyl ether system were determined at 293.2 K. The NRTL and UNIQUAC models were applied to both ternary systems. The interaction parameters obtained from both models successfully correlated the equilibrium compositions.

(Liquid + Liquid) Equilibria of (Cyclohexane + Dimethyl Sulfoxide + Cyclohexanone) and (Cyclohexane + Dimethyl Sulfoxide + Cyclohexanol) at T = 303.2 K

“…The experimental tie line data were measured using 50 cm 3 glass cells, each equipped with a jacket to circulate water from a Julabo F30C water bath. 19 The jacket temperature was controlled within ( 0.1 K. The ternary mixtures were prepared by weighing with a Mettler AB304S balance with an uncertainty of ( 0.0001 g. The estimated uncertainty of the mole fractions was less than ( 10 -4 . Each mixture was stirred with a magnetic stir bar vigorously for a time of 1 h and then left to separate into two phases for at time of at least 6 h. Samples of the upper cyclohexane-rich phase and lower DMSO-rich phase were collected by syringe through top and side PTFE/silicone septum caps, respectively.…”

Liquid–Liquid Equilibria for the Ternary Systems of Perfluorohexane + Methyl Nonafluorobutyl Ether + Toluene, + 1,4-Dioxane, or + Dimethylformamide at 298.15 K

“…Samples were collected from the upper organic solvent-rich phase and lower fluorous solvent-rich phase with a syringe through the top and side of PTFE-lined silicone septum caps, respectively. 5 Quantitative analysis of methyl nonafluorobutyl ether, perfluorohexane, toluene, 1,4-dioxane, and dimethylformamide was carried out using a 6890N gas chromatograph (Agilent Technologies, Santa Clara, CA, USA) equipped with a flame ionization detector and 7863 series automatic injector. Analytes were separated by a HP-5 fused-silica capillary column (30 m × 0.32 mm ID × 0.25 μm film thickness, Agilent, USA).…”

“…The glass cell with a jacket was used to circulate water from a Julabo F33 refrigerated/heating circulator, and the temperature of the jacket was controlled within ± 0.1 K. The mixtures were placed on a magnetic stirrer and stirred vigorously for 1 h and was then left for 6 h to separate into two distinct phases. Samples were collected from the upper organic solvent-rich phase and lower fluorous solvent-rich phase with a syringe through the top and side of PTFE-lined silicone septum caps, respectively …”

Liquid–Liquid Equilibria for the Ternary Systems of Perfluorohexane or Perfluamine + Hydrofluoroether + Tetrahydrofuran at 298.15 K or 273.15 K

“…The ternary mixture was stirred using a magnetic bar for 3 h and was then left to settle for 6 h. The liquid sample was withdrawn from the upper organic solvent-rich phase and the lower fluorinated solvent-rich phase with a syringe through the top and side injection ports, respectively. 15 The tie line end compositions of each phase were analyzed by an Agilent 6890N series gas chromatograph with an Agilent 7683 series automatic injector. The quantitative amount of chemicals was analyzed with a flame ionization detector and an Agilent Technologies HP-5 fused silica capillary column (30 m × 0.32 mm ID × 0.25 μm film thickness).…”

“…The temperature of the jacket was controlled with an uncertainty of ± 0.05 K. The glass cell was placed on a magnetic stirrer. The ternary mixture was stirred using a magnetic bar for 3 h and was then left to settle for 6 h. The liquid sample was withdrawn from the upper organic solvent-rich phase and the lower fluorinated solvent-rich phase with a syringe through the top and side injection ports, respectively . The tie line end compositions of each phase were analyzed by an Agilent 6890N series gas chromatograph with an Agilent 7683 series automatic injector.…”