Lattice fluid theories for mixtures in a component-specific cell volume framework

Chul Soo Lee, Jeong Won Kang, Ju Ho Lee, Hwayong Kim

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Lattice fluid models with temperature-independent segment number, interaction energy and component-specific cell volume are in use to represent pure component physical properties conveniently and accurately. However, the formulation of mixtures from pure components calls for a new lattice different from constituting pure components and a consistent method has not been presented so far. In the present study Helmholtz free energy was derived based on well-defined assumptions for physically interacting lattice fluid mixtures and was obtained in terms of pure component parameters and a new combining rule for energy parameter. When applied to azeotropic mixtures and mixtures with light components for a wide range of pressures, the free energy with the new combining rule was found to show general improvements.

Original languageEnglish
Pages (from-to)280-285
Number of pages6
JournalFluid Phase Equilibria
Volume262
Issue number1-2
DOIs
Publication statusPublished - 2007 Dec 15

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Fluids
fluids
cells
Free energy
free energy
Physical properties
physical properties
formulations
energy
Temperature
interactions
temperature

Keywords

  • Cell volume
  • Combining rule
  • Equation of state
  • Lattice fluid

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes
  • Physical and Theoretical Chemistry

Cite this

Lattice fluid theories for mixtures in a component-specific cell volume framework. / Lee, Chul Soo; Kang, Jeong Won; Lee, Ju Ho; Kim, Hwayong.

In: Fluid Phase Equilibria, Vol. 262, No. 1-2, 15.12.2007, p. 280-285.

Research output: Contribution to journalArticle

Lee, Chul Soo ; Kang, Jeong Won ; Lee, Ju Ho ; Kim, Hwayong. / Lattice fluid theories for mixtures in a component-specific cell volume framework. In: Fluid Phase Equilibria. 2007 ; Vol. 262, No. 1-2. pp. 280-285.
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