Further modification of the Antoine equation for correlation of adsorption equilibria

Adsorption equilibrium data and heats of adsorption are essential for the proper design and operation of adsorption process. The heats of adsorption are usually estimated from the temperature dependence of the adsorption isotherms. A theoretical basis for the remodified Antoine (RMA) model is given based on an analogy with the virial adsorption isotherm. The RMA model is also used to derive an analytic expression for the single-component isosteric heat of adsorption. The derived equations for correlating single-component adsorption equilibria and predicting single-component isosteric heats of adsorption from well-correlated, temperature-dependent adsorption isotherm data are tested against data and models in the literature.