Solubility of Perfluoropentanoic Acid in Supercritical Carbon Dioxide: Measurements and Modeling
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CEA, DEN, DTCD, SPDE, Decommissioning and Supercritical Processes Laboratory, B.P. 17171, F-30207 Bagnols-sur-Cèze, France
*E-mail: [email protected]. Phone: +33466791641.
Abstract
The solubility of perfluoropentanoic acid in supercritical carbon dioxide was investigated for a broad range of pressures (10 to 26 MPa) and at three temperatures: 314, 324, and 334 K. A dynamic gravimetric device was used for the high pressure measurements. The solubility ranges from (24.7 ± 0.3) kg·m–3 at 334 K to 10.2 MPa to (103.9 ± 7.7) kg·m–3 at 314 K and 20.1 MPa. Density-based models, notably the dimensionless version of the Adachi-Lu model, fit the experimental data accurately. The latter model was employed to calculate the solubility over a wide range of CO2 densities.
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