Adsorption-induced deformation of mesoporous solids

Gennady Yu Gor, Alexander V. Neimark

Research output: Contribution to journalArticlepeer-review

114 Scopus citations

Abstract

The Derjaguin-Broekhoff-de Boer theory of capillary condensation is employed to describe deformation of mesoporous solids in the course of adsorption-desorption hysteretic cycles. We suggest a thermodynamic model, which relates the mechanical stress induced by the adsorbed phase to the adsorption isotherm. Analytical expressions are derived for the dependence of the solvation pressure on the vapor pressure. The proposed method provides a description of nonmonotonic hysteretic deformation during capillary condensation without invoking any adjustable parameters. The method is showcased drawing on the examples of literature experimental data on adsorption deformation of porous glass and SBA-15 silica.

Original languageEnglish (US)
Pages (from-to)13021-13027
Number of pages7
JournalLangmuir
Volume26
Issue number16
DOIs
StatePublished - Aug 17 2010
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

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