Solubility of oxygen in substituted perfluorocarbons

The solubilities of oxygen in 1Br-perfluoro- n-octane, 1H-perfluoro- n-octane and 1H,8H-perfluoro- n-octane were measured using the saturation method at temperatures between 288 and 313 K and pressures close to atmospheric. The experimental data measured allows the calculation of derived properties...

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Bibliographic Details
Published in:Fluid phase equilibria 2005-11, Vol.238 (1), p.7-12
Main Authors: Dias, A.M.A., Gonçalves, C.M.B., Legido, J.L., Coutinho, J.A.P., Marrucho, I.M.
Format: Article
Language:English
Subjects:
Chemistry
Density
Exact sciences and technology
Fluorinated compounds
General and physical chemistry
Oxygen
Solubility
Solutions
Solvation process
Vapor pressure
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Summary:The solubilities of oxygen in 1Br-perfluoro- n-octane, 1H-perfluoro- n-octane and 1H,8H-perfluoro- n-octane were measured using the saturation method at temperatures between 288 and 313 K and pressures close to atmospheric. The experimental data measured allows the calculation of derived properties as enthalpy and entropy of solution, which are not available in the literature, helping to elucidate about the solvation of oxygen in these fluorinated compounds. The study of the solubility of oxygen in linear-fluorinated molecules presenting different degrees of substitution on the terminal CF 3 groups seems to indicate the existence of strong interactions between the oxygen and those groups. New experimental density and vapor pressure data for 1H,8H-perfluoro- n-octane, needed for solubility data reduction, were also measured and correlated with appropriate equations.
ISSN:0378-3812
1879-0224
DOI:10.1016/j.fluid.2005.09.011