Thermodynamic Analysis of Solid−Solid and Solid−Liquid Equilibria in Binary Systems Composed of n-Alkanes: Application to the System Tricosane (C23H48) + Pentacosane (C25H52)

• Published in: Chemistry of materials Vol. 11; no. 10; pp. 2788 - 2795
• Main Authors: Rajabalee, Fazil, Métivaud, Valérie, Mondieig, Denise, Haget, Yvette, Oonk, Harry A. J
• Format: Journal Article
• Language: English
• Published: Washington, DC American Chemical Society 18.10.1999
• Subjects: Chemistry; Condensed benzenic and aromatic compounds; Exact sciences and technology; Organic chemistry; Preparations and properties; Differential scanning calorimetry; Solid state; Hydrocarbon; Long chain; Binary system; Alkane; Liquid solid equilibrium; Thermodynamic analysis; Thermal analysis; Experimental study; Phase equilibrium; Phase transitions
• ISSN: 0897-4756; 1520-5002
• DOI: 10.1021/cm991039+

This paper presents the elements needed to carry out thermodynamic assessments of phase equilibria in binary systems of normal alkanes in the range from hexadecane (C16H34) to octacosane (C28H58) and so for the transition from the ordered mixed solid state to the mixed rotator state: the methodology of the computations and the transition properties of the pure component substances as a function of chain length. The proposed approach is applied to the system tricosane (C23H48) + pentacosane (C25H52), for which the basic experimental phase diagram data are presented.