High-pressure phase equilibria for the binary system carbon dioxide + dibenzofuran

The experimental solubility of dibenzofuran in near-critical and supercritical carbon dioxide and the solid–liquid–vapor (SLV) equilibrium line for the CO 2 + dibenzofuran system are reported. The built in-house static view cell apparatus used in these measurements is described. The solubility of na...

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Bibliographic Details
Published in:The Journal of supercritical fluids 2008-10, Vol.46 (3), p.238-244
Main Authors: Pérez, Eduardo, Cabañas, Albertina, Sánchez-Vicente, Yolanda, Renuncio, Juan A.R., Pando, Concepción
Format: Article
Language:English
Subjects:
Dibenzofuran
High-pressure phase equilibria
Solid–liquid–vapor equilibrium
Solubility
Supercritical carbon dioxide
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Summary:The experimental solubility of dibenzofuran in near-critical and supercritical carbon dioxide and the solid–liquid–vapor (SLV) equilibrium line for the CO 2 + dibenzofuran system are reported. The built in-house static view cell apparatus used in these measurements is described. The solubility of naphthalene in supercritical CO 2 and the CO 2 + naphthalene SLV line are also determined in order to assess the reliability and accuracy of the measurement technique. The solubility of dibenzofuran in carbon dioxide is determined at 301.3, 309.0, 319.2, 328.7 and 338.2 K in the 6–30 MPa pressure range. Solubility data are correlated using the Chrastil model and the Peng–Robinson equation of state. This equation is also used to predict the CO 2 + dibenzofuran SLV line. Results show the feasibility of using supercritical CO 2 to extract dibenzofuran.
ISSN:0896-8446
1872-8162
DOI:10.1016/j.supflu.2008.01.009