Critical Point Corrections for Two- and Three-Dimensional Systems

Abstract

Adsorption, the equilibrium between two-dimensional and three-dimensional fluids, is considered in the framework of Ono−Kondo lattice theory. A critical point correction to Ono−Kondo theory is proposed, and new approximations for binodals and spinodals are derived. These approximations describe the phase behavior near the critical point more accurately including two-dimensional and three-dimensional binodals. They also improve the prediction of adsorption behavior.