Bubble and dew-point measurement of mixtures of 1 H ,1 H ,2 H -perfluoro-1-octene and 1 H ,1 H ,2 H ,2 H -perfluoro-1-octanol in supercritical CO 2

• Published in: New journal of chemistry Vol. 46; no. 15; pp. 7271 - 7278
• Main Authors: Dhamodharan, Duraisami, Ghoderao, Pradnya NP, Park, Cheol-Woong, Byun, Hun-Soo
• Format: Journal Article
• Language: English
• Published: 11.04.2022
• ISSN: 1144-0546; 1369-9261
• DOI: 10.1039/D2NJ00670G

In this article, solubility data are presented for the fluoro-monomer (meth)acrylate, which plays an important role as an organic solvent in several industrial processes. High-pressure phase equilibria for 1 H ,1 H ,2 H -perfluoro-1-octene + supercritical CO 2 (PFOe + Sc-CO 2 ), and 1 H ,1 H ,2 H ,2 H -perfluoro-1-octanol + Sc-CO 2 (PFOl + Sc-CO 2 ) models were assessed in a static device at different temperatures starting from 313.2 to 393.2 K and maximum pressure of about 17.22 MPa. Temperature–pressure ( T – p ) diagrams of the PFOe + Sc-CO 2 and PFOl + Sc-CO 2 systems show mixture-critical curves between the critical temperatures of CO 2 and PFOe or CO 2 and PFOl. The solubility of PFOe and PFOl in the two systems gradually increases with increasing temperature at constant pressure. The experimental curves for the PFOe + Sc-CO 2 and PFOl + Sc-CO 2 binary models show phase behavior of curve type-I. Correlations of experimental results for the PFOe + Sc-CO 2 and PFOl + Sc-CO 2 models are compared with the P–R EOS using mixing rules with two parameters ( κ ij , η ij ). The root mean squared deviation (RMSD) percentages (%) for the two systems using the optimum factors evaluated at 353.2 K were 2.19% for PFOl + Sc-CO 2 and 5.30% for PFOe + Sc-CO 2 . The RMSD (%) for the PFOl + Sc-CO 2 model evaluated by the alterable factor at each temperature was 2.78%.