Thermodynamics of adsorption of a series of related organic molecules on graphite and on a carbon black. Part 2.—Entropies of adsorption

Abstract

A comparison is made of experimental entropy losses during the adsorption of selected vapours on two types of carbon surface with theoretical values calculated from molecular constants. Both the mobile film and localised film theories have been considered. For most of the gases and both carbon surfaces a mobile film appears to be the only possibility. Generally rotation about one or two symmetry axes appears to be retained except in the case of m-cresol where more restricted rotation seems to exist.