STUDIES OF THE STRUCTURAL HETEROGENEITY OF MICROPOROUS CARBONS USING LIQUID-SOLID ADSORPTION-ISOTHERMS

The adsorption of a single-solute from dilute aqueous solutions by act ive carbons has been formulated in terms of the corresponding vapor ph ase adsorption parameters and the ''interfacial'' similarity coefficie nt, which characterizes the similarities between the adsorption curves for the gas/solid and solid/liquid interfaces. Subsequently, these eq uations have been used to characterize the microporosity of eight diff erent active carbon samples on the basis of benzene adsorption isother ms measured from dilute aqueous solutions. It has been demonstrated on the basis of the experimental adsorption isotherms that liquid/solid data provide essentially the same information about the structural het erogeneity of porous carbons as that obtained via gas/solid adsorption measurements.