Constrained equilibrium as a tool for characterization of deformable porous media.

J Phys Chem B

UMR 7575 LECA ENSCP-UPMC, 11 rue P. et M. Curie, 75231 Cedex 05, Paris, France.

Published: March 2007

AI Article Synopsis

  • A new method is introduced for analyzing deformable porous materials using noncritical adsorption probes.
  • The approach involves manipulating adsorbates through constrained equilibrium states, which creates a pseudocritical point or a van der Waals-type loop.
  • By combining perturbation theory and Monte Carlo simulations, researchers discovered a connection between the loop characteristics and the structural properties of the porous materials, enabling their characterization through specific shifts and shapes in the data.

Article Abstract

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.

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http://dx.doi.org/10.1021/jp066460hDOI Listing

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