Phase equilibria prediction of hydrogen fluoride systems from an associating model

Ioannis Economou, Cor J. Peters

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Thermodynamic properties of hydrogen fluoride are strongly affected by the tendency of its molecules to form oligomers through hydrogen bonding in both the vapor and liquid phases. In this work, the associated perturbed anisotropic chain theory (APACT) is applied to correlate the vapor pressure and the saturated liquid and saturated vapor densities of pure hydrogen fluoride from the triple point up to the critical point with very good accuracy. An equilibrium model is used to account for hydrogen bonding that assumes the formation of dimer, trimer, hexamer, and nonamer species. The model is used to predict the phase behavior of binary hydrogen fluoride mixtures with CFCs and HCl and accurately describes the azeotrope formation of these systems. Liquid-liquid equilibria are predicted for several hydrogen fluoride-fluorocarbon mixtures that have not been experimentally detected in the past.

Original languageEnglish
Pages (from-to)1868-1872
Number of pages5
JournalIndustrial and Engineering Chemistry Research
Volume34
Issue number5
Publication statusPublished - 1995
Externally publishedYes

Fingerprint

Hydrofluoric Acid
phase equilibrium
fluoride
Phase equilibria
hydrogen
Hydrogen
Liquids
prediction
Hydrogen bonds
liquid
Azeotropes
Fluorocarbons
Chlorofluorocarbons
Density of gases
Phase behavior
Vapor pressure
Oligomers
Dimers
fluorocarbon
Thermodynamic properties

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Environmental Science(all)
  • Polymers and Plastics

Cite this

Phase equilibria prediction of hydrogen fluoride systems from an associating model. / Economou, Ioannis; Peters, Cor J.

In: Industrial and Engineering Chemistry Research, Vol. 34, No. 5, 1995, p. 1868-1872.

Research output: Contribution to journalArticle

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