The Ternary Systems Involving Cyclohexane, Water, and Isopropyl and Normal Propyl Alcohols

Influence of Temperature on the Liquid–Liquid Phase Equilibria of Ternary (Water + Alcohol + Entrainer) Systems

“…Comparison of the experimentally measured tie lines (red ▼) of the (water + n -propanol + cyclohexane) system at P = 0.1 MPa and T = 298.2 K with tie lines reported by Washburn et al (●), Letcher et al (■), and Plačkov and Štern (▲). All data are in mole fractions.…”

“…Othmer–Tobias plot for the measured compositions w (in mass fraction) of the {water (1) + n -propanol (2) + cyclohexane (3)} system at P = 0.1 MPa and T = 298.2 K (red ▼), compared with the compositions reported by Washburn et al (●), Letcher et al (■), and Plačkov and Štern (▲).…”

“…In order to verify the experimental procedure and analytical method, the (water + n -propanol + cyclohexane) system at 298.2 K was measured and compared to published data. This system and temperature were chosen as at least three sets of published data − are available, with these three sets being in excellent agreement with one another. The data are provided in Table and are compared to the published data in Figure .…”

Liquid–Liquid Equilibrium Data for the Ternary Systems of Water, Isopropyl Alcohol, and Selected Entrainers

“…The system water–IPA with cyclohexane as an entrainer has been studied previously by various researchers. Washburn , developed the LLE data for the water–cyclohexane–IPA system at 288.15, 298.15, and 308.15 K with the reported estimated error of ±0.05 °C in temperature. The data show the equilibrium phase difference by maximum mole fraction of 0.07 in hydrocarbon and water rich phases.…”

“…Other environment friendly entrainers must be analyzed and utilized in the separation processes. − Hence, an intensive research is being done to find beneficial entrainers to replace benzene. The past literature also provides the phase equilibria of the studied systems, i.e., water–cyclohexane–IPA, − water–hexane–IPA, , and water–benzene–IPA. − In this work, phase equilibrium for the water–PA system is developed by using three entrainers, benzene, cyclohexane, and hexane. The developed data for three entrainers can be used to find the better substitutive entrainer in future on environmental and economic basis for the separation of IPA from water.…”