Constrained Equilibrium as a Tool for Characterization of Deformable Porous Media

A new method for characterizing the deformable porous materials with noncritical adsorption probes is proposed. The mechanism is based on driving the adsorbate through a sequence of constrained equilibrium states with the insertion isotherms forming a pseudocritical point or a van der Waals-type loo...

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Bibliographic Details
Published in:The journal of physical chemistry. B 2007-03, Vol.111 (10), p.2540-2545
Main Authors: Vakarin, E. V, Duda, Yurko, Badiali, J. P
Format: Article
Language:English
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Summary:A new method for characterizing the deformable porous materials with noncritical adsorption probes is proposed. The mechanism is based on driving the adsorbate through a sequence of constrained equilibrium states with the insertion isotherms forming a pseudocritical point or a van der Waals-type loop. In the framework of a perturbation theory and Monte Carlo simulations we have found a link between the loop parameters and the host morphology. This allows one to characterize porous matrices through analyzing a shift of the pseudocritical point and a shape of the pseudospinodals.
ISSN:1520-6106
1520-5207
DOI:10.1021/jp066460h