Phase behaviour of fluorocarbon and hydrocarbon mixtures: interpretation of type II and type III behaviour in terms of a ‘hard-sphere + attractive force’ equation of state

• Published in: Fluid phase equilibria 1986, Vol.25 (3), p.263-272
• Main Authors: Christou, Georgia, Morrow, Tim, Sadus, Richard J., Young, Colin L.
• Format: Article
• Language: English
• Subjects: Chemistry; Exact sciences and technology; General and physical chemistry; Liquid-liquid equilibria; Liquid-solid equilibria; Liquid-vapor equilibria; Others (including liquid-liquid-vapor equilibria); Phase equilibria
• ISSN: 0378-3812; 1879-0224
• DOI: 10.1016/0378-3812(86)80002-4

Christou, G., Morrow, T., Sadus, R.J. and Young, C.L., 1986. Phase behaviour of fluoro-carbon and hydrocarbon mixtures: interpretation of type II and type III behaviour in terms of a ‘hard-sphere + attractive force’ equation of state. Fluid Phase Equilibria, 25: 263–272. Experimental measurements of the upper critical solution temperature of octadecafluorooctane + n-alkanes are reported. These measurements and those discussed by Schneider (1983) on the phase behaviour of tetrafluoromethane + alkanes are compared with results obtained from the one-fluid model using a ‘hard sphere + attractive term’ equation of state. Interaction parameters, ξ, obtained from the comparison together with values from the literature on other fluorocarbon + hydrocarbon mixtures show trends which are briefly discussed.