REPLICA ORNSTEIN-ZERNIKE THEORY FOR CHEMICALLY ASSOCIATING FLUIDS WITH DIRECTIONAL FORCES IN DISORDERED POROUS-MEDIA - SMITH-NEZBEDA MODEL IN A HARD-SPHERE MATRIX

The associative replica Ornstein-Zernike equations, supplemented by th e associative hypernetted chain approximation are used to describe the Smith-Nezbeda model for an associating fluid adsorbed in a disordered hard sphere matrix. These equations have been developed by combining the replica Ornstein-Zernike equations with the Wertheim theory of ass ociation in fluids. The pair distribution functions and fraction of un bonded species are;calculated. Also investigated is the influence of t he association on the equation of state a nd the chemical potential of the absorbed fluid.