Analysis of surface energy and pressure of liquid in porous materials

Markku J. Lampinen, I. Farkas

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The aim of our research has been to determine the surface energy and pressure of a liquid in porous materials. On the basis of a purely thermodynamic analysis, and without recourse to any geometrical model for the porous material, we have derived new equations for the liquid pressure and for the surface energy. The empirical thermodynamic information required comprises vapor pressure and sorption heat measurements and the critical temperature. As an example illustrating the application of these equations we have determined the surface energies and pressure of water in a hygroscopic material. Representative numerical examples are presented and they are compared to the results of Kelvin's equation.

Original languageEnglish
Pages (from-to)1695-1702
Number of pages8
JournalChemical Engineering Science
Volume47
Issue number7
DOIs
Publication statusPublished - 1992

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Interfacial energy
Porous materials
Liquids
Thermodynamics
Thermal variables measurement
Vapor pressure
Sorption
Water
Temperature

ASJC Scopus subject areas

  • Chemical Engineering(all)

Cite this

Analysis of surface energy and pressure of liquid in porous materials. / Lampinen, Markku J.; Farkas, I.

In: Chemical Engineering Science, Vol. 47, No. 7, 1992, p. 1695-1702.

Research output: Contribution to journalArticle

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