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.
|Number of pages||14|
|Journal||Physical Review. E, Statistical, Nonlinear and Soft Matter Physics|
|Publication status||Published - 30 Jul 2013|
P. Handford, T., J. Perez-Reche, F., & N. Taraskin, S. (2013). Capillary condensation in one-dimensional irregular confinement. Physical Review. E, Statistical, Nonlinear and Soft Matter Physics, 88(1), . https://doi.org/10.1103/PhysRevE.88.012139