Excess Enthalpies and Volumes of Ternary Mixtures Containing 1-Propanol or 1-Butanol, an Ether (Diisopropyl Ether or Dibutyl Ether), and Heptane

• Published in: Journal of chemical and engineering data Vol. 45; no. 1; pp. 124 - 130
• Main Authors: Rezanova, Elena N, Kammerer, Klaus, Lichtenthaler, Rüdiger N
• Format: Journal Article
• Language: English
• Published: Washington, DC American Chemical Society 01.01.2000
• Subjects: Chemical thermodynamics; Chemistry; Exact sciences and technology; General and physical chemistry; Mixtures; Thermodynamic properties; Ternary system; Ether; Hydrocarbon; Molar volume; Enthalpy; Binary system; Group contribution method; Excess parameter; Propanol; Experimental study; Heptane; Primary alcohol; Butanol; Thermodynamic properties
• ISSN: 0021-9568; 1520-5134
• DOI: 10.1021/je9901785

Experimental data are reported at 298.15 K of excess molar volumes V E and of excess molar enthalpies H E for binary and ternary mixtures of an alkanol (1-propanol or 1-butanol), an ether (diisopropyl ether or dibutyl ether), and an alkane (heptane). A vibrating-tube densitometer was used to determine V E. H E was measured using a quasi-isothermal flow calorimeter. The experimental results are used to test the applicability of the modified UNIFAC model for correlating H E and of the ERAS model for describing both V E and H E of binary mixtures as well as for predicting the excess properties of ternary mixtures containing an alkanol, an ether, and an alkane. For all investigated binary systems, a better description of the experimental data was achieved with the ERAS model in comparison with the modified UNIFAC model.