Liquid-liquid equilibrium of substituted perfluoro-n-octane + n-octane systems

Fatima R. Varanda; Lourdes F. Vega; Joào A.P. Coutinho; Isabel M. Marrucho

doi:10.1016/j.fluid.2008.04.011

Liquid-liquid equilibrium of substituted perfluoro-n-octane + n-octane systems

Fatima R. Varanda, Lourdes F. Vega, Joào A.P. Coutinho, Isabel M. Marrucho

Chemical and Petroleum Engineering

CICECO – Instituto de Materiais de Aveiro

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

The liquid-liquid phase equilibria of substituted perfluoro-n-octane (1Br-perfluoro-n-octane, 1H-perfluoro-n-octane, 1H,8H-perfluoro-n-octane) + n-octane were experimentally determined by turbidimetry in the temperature range between 270 K and 330 K and at the vapor pressure of the mixture. The measured equilibrium data were correlated with an equation derived from renormalization group (RG) theory and with soft-SAFT Equation of State. The LLE data of the binary mixtures of n-octane + substituted perfluoro-n-octane were compared with n-octane + perfluoro-n-octane data. The results indicate an increasing solubility with 1Br-perfluoro-n-octane and show that the introduction of second hydrogen atom has almost no effect on phase equilibrium.

Original language	British English
Pages (from-to)	85-89
Number of pages	5
Journal	Fluid Phase Equilibria
Volume	268
Issue number	1-2
DOIs	https://doi.org/10.1016/j.fluid.2008.04.011
State	Published - 25 Jun 2008

Keywords

Fluorocarbons
Liquid-liquid equilibrium
PFC
Renormalization group theory
Soft-SAFT EoS

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10.1016/j.fluid.2008.04.011

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title = "Liquid-liquid equilibrium of substituted perfluoro-n-octane + n-octane systems",

abstract = "The liquid-liquid phase equilibria of substituted perfluoro-n-octane (1Br-perfluoro-n-octane, 1H-perfluoro-n-octane, 1H,8H-perfluoro-n-octane) + n-octane were experimentally determined by turbidimetry in the temperature range between 270 K and 330 K and at the vapor pressure of the mixture. The measured equilibrium data were correlated with an equation derived from renormalization group (RG) theory and with soft-SAFT Equation of State. The LLE data of the binary mixtures of n-octane + substituted perfluoro-n-octane were compared with n-octane + perfluoro-n-octane data. The results indicate an increasing solubility with 1Br-perfluoro-n-octane and show that the introduction of second hydrogen atom has almost no effect on phase equilibrium.",

keywords = "Fluorocarbons, Liquid-liquid equilibrium, PFC, Renormalization group theory, Soft-SAFT EoS",

author = "Varanda, {Fatima R.} and Vega, {Lourdes F.} and Coutinho, {Jo{\`a}o A.P.} and Marrucho, {Isabel M.}",

year = "2008",

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doi = "10.1016/j.fluid.2008.04.011",

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T1 - Liquid-liquid equilibrium of substituted perfluoro-n-octane + n-octane systems

AU - Varanda, Fatima R.

AU - Vega, Lourdes F.

AU - Coutinho, Joào A.P.

AU - Marrucho, Isabel M.

PY - 2008/6/25

Y1 - 2008/6/25

N2 - The liquid-liquid phase equilibria of substituted perfluoro-n-octane (1Br-perfluoro-n-octane, 1H-perfluoro-n-octane, 1H,8H-perfluoro-n-octane) + n-octane were experimentally determined by turbidimetry in the temperature range between 270 K and 330 K and at the vapor pressure of the mixture. The measured equilibrium data were correlated with an equation derived from renormalization group (RG) theory and with soft-SAFT Equation of State. The LLE data of the binary mixtures of n-octane + substituted perfluoro-n-octane were compared with n-octane + perfluoro-n-octane data. The results indicate an increasing solubility with 1Br-perfluoro-n-octane and show that the introduction of second hydrogen atom has almost no effect on phase equilibrium.

AB - The liquid-liquid phase equilibria of substituted perfluoro-n-octane (1Br-perfluoro-n-octane, 1H-perfluoro-n-octane, 1H,8H-perfluoro-n-octane) + n-octane were experimentally determined by turbidimetry in the temperature range between 270 K and 330 K and at the vapor pressure of the mixture. The measured equilibrium data were correlated with an equation derived from renormalization group (RG) theory and with soft-SAFT Equation of State. The LLE data of the binary mixtures of n-octane + substituted perfluoro-n-octane were compared with n-octane + perfluoro-n-octane data. The results indicate an increasing solubility with 1Br-perfluoro-n-octane and show that the introduction of second hydrogen atom has almost no effect on phase equilibrium.

KW - Fluorocarbons

KW - Liquid-liquid equilibrium

KW - PFC

KW - Renormalization group theory

KW - Soft-SAFT EoS

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DO - 10.1016/j.fluid.2008.04.011

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SP - 85

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JO - Fluid Phase Equilibria

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ER -

Liquid-liquid equilibrium of substituted perfluoro-n-octane + n-octane systems

Abstract

Keywords

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