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Phys Rev E Stat Nonlin Soft Matter Phys. 2002 Nov;66(5 Pt 1):051201. Epub 2002 Nov 13.

Simple model of capillary condensation in cylindrical pores.

Author information

1
Laboratorio TANDAR, Departamento de Física, Comisión Nacional de Energía Atómica, Avenida del Libertador 8250, RA-1429 Buenos Aires, Argentina.

Abstract

A simple model based on an approximation of the dropletlike model is formulated for studying adsorption of fluids into cylindrical pores. This model yields a nearly universal description of capillary condensation transitions for noble gases confined by alkali metals. The system's thermodynamical behavior is predicted from the values of two dimensionless parameters: D* (the reduced asymptotic strength of the fluid-adsorber interaction, a function of temperature) and R* (the reduced radius of the pore). The phenomenon of hysteresis inherently related to capillary condensation is discussed. The connection to a previously proposed universality for cylindrical pores is also established.

PMID:
12513473
DOI:
10.1103/PhysRevE.66.051201

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