The effect of the physical and chemical characteristics of activated carbons on the adsorption energy and affinity coefficient of Dubinin equation

The dependency of adsorption energy and affinity coefficient of Dubinin equations on characteristics of activated carbons was investigated. Adsorption energies increased with decreasing average micropore widths. For nitrogen, carbons with higher degrees of mesoporosity had higher affinity coefficients. For water vapor, carbons with higher surface polarities showed higher adsorption energies.