Characterization of porous materials by finite concentration inverse gas chromatography

Inverse gas chromatography (IGC) is a well established tool for the measurement of physico-chemical properties of solid materials at infinite dilution as well as for the determination of isotherms and surface heterogeneity at higher concentration. A novel combination of IGC and thermal desorption methods allows an advanced characterization of porous materials with organic vapors. Different porous materials are investigated by a combined IGC/flash thermodesorption. The method is applied to separate the micropore contribution to adsorption from the mesopores and the outer surface area using the difference in the adsorption mechanism.