Phase equilibria in binary mixtures of propane and hexacontane

• Published in: Fluid phase equilibria 1993-05, Vol.85, p.301-312
• Main Authors: Peters, C.J., de Roo, J.L., de Swaan Arons, J.
• Format: Article
• Language: English
• Subjects: Chemistry; Exact sciences and technology; General and physical chemistry; Others (including liquid-liquid-vapor equilibria); Phase equilibria
• ISSN: 0378-3812; 1879-0224
• DOI: 10.1016/0378-3812(93)80021-E

Peters, C.J., de Roo, J.L. and de Swaan Arons, J., 1993. Phase equilibria in binary mixtures of propane and hexacontane. Fluid Phase Equilibria, 85: 301-312. This paper reports on the phase behaviour of binary mixtures of propane with hexacontane ( n-C 60H 122). The measurements cover a temperature range from about 310 K up to 430 K. Pressures up to 15 MPa were applied. In the binary propane + hexacontane, a three-phase equilibrium liquid + liquid + vapour (l 1l 2g) occurs in the near-critical region of propane. However, in this system the lower critical end point (LCEP) was hidden by solidification of hexacontane. The pressure-temperature coordinates of the upper critical end point were determined at 369.95 K and 4.275 MPa. Because the three-phase equilibrium l 1l 2g is interrupted by the three-phase equilibrium, solid hexacontane + liquid + vapour (S Blg), a Q-point solid hexacontane + liquid + liquid + vapour (S Bl 1l 2g) is present in this binary. Its pressure and temperature coordinates were located at 352.0 K and 3.05 MPa.