Phase equilibria in binary mixtures of propane and triphenylmethane

• Published in: Fluid phase equilibria Vol. 109; no. 1; pp. 99 - 111
• Main Authors: Peters, C.J, de Roo, J.L, de Swaan Arons, J
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.08.1995; Elsevier Science
• Subjects: Binary mixtures; Chemistry; Exact sciences and technology; Experimental; General and physical chemistry; Liquid-vapor equilibria; Phase equilibria; VLE; Phase equilibria; Binary mixtures; Experimental; VLE; Binary mixture; Triple point; Liquid vapor equilibrium; Liquid solid equilibrium; Experimental study; Propane; Organic compounds
• ISSN: 0378-3812; 1879-0224
• DOI: 10.1016/0378-3812(95)02687-A

This paper presents experimental results on the phase behavior of the binary system propane + triphenylmethane. Besides vapor-liquid equilibria, also equilibria in the presence of solid triphenylmethane have been determined experimentally. Special attention was given to determine the course of the various three-phase equilibria originating in the quadruple point solid triphenylmethane-liquid-liquid-vapor ( sB l 1 l 2g). The experimental work was performed in the temperature region 310 < T K < 450 , while pressures up to 11 MPa have been applied. Surprisingly, it was found that in this binary system the three-phase equilibrium liquid-liquid-vapor ( l 1 l 2 g) could be determined at supercooled conditions over a temperature range of about 25 K, i.e. some parts of the fluid phase behavior could be observed and measured at metastable conditions.