Phase equilibria of carbon dioxide + 1-nonanol system at high pressures |
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Authors: | Catinca Secuianu Viorel Feroiu Dan Gean? |
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Affiliation: | Department of Applied Physical Chemistry and Electrochemistry, “Politehnica” University of Bucharest, 1-7 Gh. Polizu Street, 011061 Bucharest, Romania |
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Abstract: | Vapor-liquid-equilibria (VLE) and vapor-liquid-liquid equilibria (VLLE) data for the carbon dioxide + 1-nonanol system were measured at 303.15, 308.15, 313.15, 333.15, and 353.15 K. Phase behavior measurements were made in a high-pressure visual cell with variable volume, based on the static-analytic method. The pressure range under investigation was between 1.15 and 103.3 bar. The Soave-Redlich-Kwong (SRK) equation of state (EOS) coupled with both classical van der Waals and a Gibbs excess energy (GE) mixing rules was used in semi-predictive approaches, in order to represent the complex phase behavior (critical curve, liquid-liquid-vapor (LLV) line, isothermal VLE, LLE, and VLLE) of the system. The topology of phase behavior is correctly predicted. |
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Keywords: | Phase equilibrium Carbon dioxide 1-Nonanol High-pressures SRK |
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