Empirical relationships describing energetics of adsorption at low coverages on microporous carbons

The fundamental empirical relationships that correlate the adsorption energ y with physicochemical parameters of adsorbates are discussed. Based on the experimental data of the adsorption enthalpy of different organic adsorbat es on microporous activated carbons some new correlations between adsorptio n enthalpy and entropy at zero surface coverage and physicochemical paramet ers of adsorbed molecules are proposed. It is shown that they can be applie d for the calculation of carbon porosity. The influence of carbon surface o xidation on its energetic heterogeneity is also discussed.