Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 259, Issue 2, Pages 209-222Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/S0021-9797(02)00203-5
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We investigate the capillary condensation of two model fluid mixtures in slit-like pores, which exhibit different demixing properties in the bulk phase. The interactions between adsorbate particles are modeled by using Lennard-Jones (12, 6) potentials and the adsorbing potentials are of the Lennard-Jones (9, 3) type. The calculations are performed for different pore widths and at different concentrations of the bulk gas, by means of density functional theory. We evaluate the capillary phase diagrams and discuss their dependence on the parameters of the model. Our calculations indicate that a binary mixture confined to a slit-like pore may exhibit rich phase behavior. (C) 2003 Elsevier Science (USA). All rights reserved.
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