Phase equilibria and thermophysical properties of carbon dioxide-expanded fluorinated solvents

Yeh Wei Kho; Daniel C. Conrad; Barbara L. Knutson

doi:10.1016/S0378-3812(02)00316-3

Phase equilibria and thermophysical properties of carbon dioxide-expanded fluorinated solvents

Yeh Wei Kho, Daniel C. Conrad, Barbara L. Knutson

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

31 Scopus citations

Abstract

The volume expansion behavior and liquid molar compositions of several fluorinated solvents (methoxynonafluorobutane, C₄F₉OCH₃; ethoxynonafluorobutane, C₄F₉OC₂H₅; 1,1,1,2,3,4,4,5,5,5-decafluoropentane, C₅F₁₀H₂; and perfluorohexane, C₆F₁₄) expanded by pressurized carbon dioxide were measured at temperatures of 298 and 308K and pressures up to 72bar. The densities and viscosities of the expanded liquid phases were also determined. Fluorinated solvents undergo greater solvent-dependent volume expansion (as defined by de la Fuente Badilla et al. [J. Supercrit. Fluids 17 (2000) 13]) relative to traditional organic solvents. The Peng-Robinson equation of state (PR-EOS) satisfactorily described the liquid phase composition of the expanded fluorinated solvents. The viscosity reduction of the expanded fluorinated solvents was modeled by extending the method of Orbey and Sandler [Can. J. Chem. Eng. 71 (1993) 437] to fluorinated solvents. The model predicted the viscosities of the CO₂-expanded solvents with an absolute average relative deviation (%AARD) of 6-12%.

Original language	English
Pages (from-to)	179-193
Number of pages	15
Journal	Fluid Phase Equilibria
Volume	206
Issue number	1-2
DOIs	https://doi.org/10.1016/S0378-3812(02)00316-3
State	Published - Apr 30 2003

Keywords

Carbon dioxide
Equation of state
Hydrofluorocarbon
Hydrofluoroether
Viscosity
Volume expansion

ASJC Scopus subject areas

General Chemical Engineering
General Physics and Astronomy
Physical and Theoretical Chemistry

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10.1016/S0378-3812(02)00316-3

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abstract = "The volume expansion behavior and liquid molar compositions of several fluorinated solvents (methoxynonafluorobutane, C4F9OCH3; ethoxynonafluorobutane, C4F9OC2H5; 1,1,1,2,3,4,4,5,5,5-decafluoropentane, C5F10H2; and perfluorohexane, C6F14) expanded by pressurized carbon dioxide were measured at temperatures of 298 and 308K and pressures up to 72bar. The densities and viscosities of the expanded liquid phases were also determined. Fluorinated solvents undergo greater solvent-dependent volume expansion (as defined by de la Fuente Badilla et al. [J. Supercrit. Fluids 17 (2000) 13]) relative to traditional organic solvents. The Peng-Robinson equation of state (PR-EOS) satisfactorily described the liquid phase composition of the expanded fluorinated solvents. The viscosity reduction of the expanded fluorinated solvents was modeled by extending the method of Orbey and Sandler [Can. J. Chem. Eng. 71 (1993) 437] to fluorinated solvents. The model predicted the viscosities of the CO2-expanded solvents with an absolute average relative deviation (%AARD) of 6-12%.",

keywords = "Carbon dioxide, Equation of state, Hydrofluorocarbon, Hydrofluoroether, Viscosity, Volume expansion",

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AU - Kho, Yeh Wei

AU - Conrad, Daniel C.

AU - Knutson, Barbara L.

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Y1 - 2003/4/30

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AB - The volume expansion behavior and liquid molar compositions of several fluorinated solvents (methoxynonafluorobutane, C4F9OCH3; ethoxynonafluorobutane, C4F9OC2H5; 1,1,1,2,3,4,4,5,5,5-decafluoropentane, C5F10H2; and perfluorohexane, C6F14) expanded by pressurized carbon dioxide were measured at temperatures of 298 and 308K and pressures up to 72bar. The densities and viscosities of the expanded liquid phases were also determined. Fluorinated solvents undergo greater solvent-dependent volume expansion (as defined by de la Fuente Badilla et al. [J. Supercrit. Fluids 17 (2000) 13]) relative to traditional organic solvents. The Peng-Robinson equation of state (PR-EOS) satisfactorily described the liquid phase composition of the expanded fluorinated solvents. The viscosity reduction of the expanded fluorinated solvents was modeled by extending the method of Orbey and Sandler [Can. J. Chem. Eng. 71 (1993) 437] to fluorinated solvents. The model predicted the viscosities of the CO2-expanded solvents with an absolute average relative deviation (%AARD) of 6-12%.

KW - Carbon dioxide

KW - Equation of state

KW - Hydrofluorocarbon

KW - Hydrofluoroether

KW - Viscosity

KW - Volume expansion

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Phase equilibria and thermophysical properties of carbon dioxide-expanded fluorinated solvents

Abstract

Keywords

ASJC Scopus subject areas

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