On the relative strength of adsorption of gases on carbon surfaces with functional groups: fluid-fluid, fluid-graphite and fluid-functional group interactions

Experiments at several temperatures were carried out for adsorption of non-polar and polar fluids on a highly graphitized carbon black, Carbopack F, which is composed of a basal plane of graphene and functional groups at the edges of the graphene layers. By comparing the experimental Henry constants with the theoretical Henry constants, calculated for adsorption on an ideal basal plane of graphite, we can determine the different relations and mutual influences between the various interactions, fluid-basal plane, fluid-functional group and fluid-fluid interactions, in the initial stages of adsorption.