Vapor-Liquid Phase Equilibria for Carbon Dioxide+Isopentanol Binary System at Elevated Pressure

✍ Scribed by Lin Wang; Fengpu Cao; Shanshan Liu; Hao Yang

• Publisher: John Wiley and Sons
• Year: 2011
• Tongue: English
• Weight: 442 KB
• Volume: 29
• Category: Article
• ISSN: 0256-7660
• DOI: 10.1002/cjoc.201180285

✦ Synopsis

Abstract

High‐pressure vapor‐liquid phase equilibrium data for carbon dioxide+isopentanol were measured at temperatures of 313.2, 323.1, 333.5 and 343.4 K in the pressure range of 4.64 to 12.71 MPa in a variable‐volume high‐pressure visual cell. The experimental data were well correlated with Peng‐Robinson equation of state (PR‐EOS) together with van der Waals‐2 two‐parameter mixing rule, and the binary interaction parameters were obtained. Henry coefficients and partial molar volumes of CO~2~ at infinite dilution were estimated based on Krichevsky‐Kasarnovsky equation, and Henry coefficients increase with increasing temperature, however, partial molar volumes of CO~2~ at infinite dilution are negative and the magnitudes decrease with temperature.