Monolayer adsorption of non-spherical molecules on solid surfaces. Part 2.—The application of first-order RAM theory to nitrogen on graphite

Abstract

First-order RAM (reference average Mayer) perturbational theory is used to calculate the adsorption characteristics of monolayer nitrogen on graphite. The model used for this purpose considers the adsorbed layer to be strictly two-dimensional and neglects the periodic structure of the underlying solid. However, considering the interactions in the adsorbed layer, we also discuss the effects of screening by the substrate on the interaction between a pair of admolecules. The results of theoretical calculations are compared with computer simulations and with the experimental data.