Capillary condensation in one-dimensional irregular confinement

Thomas P. Handford, Francisco J. Perez-Reche, Sergei N. Taraskin

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Abstract

A lattice-gas model with heterogeneity is developed for the description of fluid condensation in finite sized one-dimensional pores of arbitrary shape. An exact solution of the model is presented for zero-temperature that reproduces the experimentally observed dependence of the amount of fluid adsorbed in the pore on external pressure. Finite-temperature Metropolis dynamics simulations support analytical findings in the limit of low temperatures. The proposed framework is viewed as a fundamental building block of the theory of capillary condensation necessary for reliable structural analysis of complex porous media from adsorption-desorption data.
Original languageEnglish
Article number012139
Number of pages14
JournalPhysical Review. E, Statistical, Nonlinear and Soft Matter Physics
Volume88
Issue number1
DOIs
Publication statusPublished - 30 Jul 2013

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Keywords

  • cond-mat.stat-mech
  • cond-mat.mes-hall

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