Correct form of the equation of capillary condensation in porous bodies in application to the separation of adsorption and capillary condensation in slits and porous bodies of known structure and determination of their structure by adsorption and sorption isotherms

Abstract

A line of thermodynamic reasoning of a very general nature is presented. It does not depend on any special pore shape or any pore width distribution. It does not require the use of the ‘disjoining pressure’ but leads to the precise equation of capillary condensation in porous bodies of any kind, applicable for any adsorption isotherm in the simplest case when the influence of the pore wall curvature on the adsorption equilibrium may be neglected.