Excess enthalpy surfaces for alkanol-alkane mixtures by the uniquac model

Yasar Demirel, E. Z. Hamad

Research output: Contribution to journalArticle

Abstract

Temperature and composition dependences of excess enthalpy surfaces and composition fluctuations were calculated using the uniquac model and the Kirkwood-Buff theory of statistical mechanics for seven alkanol-alkane mixtures. Surfaces of partial molar excess enthalpies and enthalpy of dilution were also calculated. Temperature-dependent parameters of the uniquac model in the range of 278.15-333.15 K were used in the calculations. The thermodynamic surfaces facilitate better understanding of thermodynamic properties of alkanol-alkane mixtures over the whole mole fraction range in a certain temperature interval. The uniquac model is capable of representing the thermodynamic properties of associating mixtures at low pressures.

Original languageEnglish (US)
Pages (from-to)51-74
Number of pages24
JournalThermochimica Acta
Volume260
Issue numberC
DOIs
StatePublished - Aug 15 1995

Fingerprint

Alkanes
Paraffins
alkanes
Enthalpy
enthalpy
Thermodynamic properties
thermodynamic properties
Statistical mechanics
Chemical analysis
statistical mechanics
Temperature
Dilution
dilution
low pressure
Thermodynamics
intervals
thermodynamics
temperature dependence
temperature

Keywords

  • Alkanol-alkane mixtures
  • Composition fluctuations
  • Excess enthalpy
  • Kirkwood-Buff theory
  • Uniquac model

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Condensed Matter Physics
  • Instrumentation

Cite this

Excess enthalpy surfaces for alkanol-alkane mixtures by the uniquac model. / Demirel, Yasar; Hamad, E. Z.

In: Thermochimica Acta, Vol. 260, No. C, 15.08.1995, p. 51-74.

Research output: Contribution to journalArticle

Demirel, Yasar ; Hamad, E. Z. / Excess enthalpy surfaces for alkanol-alkane mixtures by the uniquac model. In: Thermochimica Acta. 1995 ; Vol. 260, No. C. pp. 51-74.
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