Adsorption-Induced Deformation of Mesoporous Solids
Chemical Physics
2010-07-20 v3 Statistical Mechanics
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 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 non-monotonic 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.
Keywords
Cite
@article{arxiv.1003.5608,
title = {Adsorption-Induced Deformation of Mesoporous Solids},
author = {Gennady Yu. Gor and Alexander V. Neimark},
journal= {arXiv preprint arXiv:1003.5608},
year = {2010}
}
Comments
21 pages, 3 figures