On Scrutinizing the Classical Polanyi Adsorption Potential Theory for Vapour Uptake Occurring in the Mesopores of Curved Shapes

Abstract

One of the essential foundations of the classical Polanyi adsorption potential theory has been assessed with respect to the invariability with temperature of the so-called characteristic adsorption curves. This has been achieved both numerically and experimentally for nitrogen and numerically for argon adsorption onto spherical as well as onto cylindrical mesopore entities at 77.35 K and 87.29 K, respectively. The adsorption results in these spherical and cylindrical pores were obtained from an application of the Broekhoff–de Boer equation and compared to nitrogen experimental sorption data obtained from cylindrical SBA-15 and spherical SBA-16 pore systems. The characteristic curves obtained in both ways were consistent with each other.