Thermodynamic behaviour of the binary systems dimethyl carbonate + n-octane or n-nonane

• Published in: Thermochimica acta Vol. 433; no. 1; pp. 128 - 133
• Main Authors: Pardo, J.M., Tovar, C.A., Troncoso, J., Carballo, E., Romaní, L.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01-08-2005; Elsevier Science
• Subjects: Chemical thermodynamics; Chemistry; Dialkyl carbonate; Exact sciences and technology; Excess magnitudes; General and physical chemistry; Heat capacity; Mixtures; n-Alkane; Thermodynamic properties; Heat capacity; Excess magnitudes; Dialkyl carbonate; n-Alkane; Octane; Nonane; Organic carbonate; Hydrocarbon; Molar volume; Binary system; Excess parameter; Thermal properties; Alkane; Thermodynamic properties
• ISSN: 0040-6031; 1872-762X
• DOI: 10.1016/j.tca.2004.11.022

Isobaric molar heat capacities, densities and speeds of sound were determined for the dimethyl carbonate
+
n-octane and
n-nonane systems at atmospheric pressure covering the whole composition interval and in the temperature range (288.15–308.15
K). From these data, derived properties and excess magnitudes were obtained. A strongly temperature-dependent W-shaped curves against composition were observed for excess isobaric molar heat capacities in both system, showing the other excess magnitudes regular tendencies. From these results, a comparative analysis of the existing differences between the thermodynamic behaviour of the two systems was carried out.