MODELIZATION OF EXPERIMENTAL ISOTHERMS OF N-ALKANES IN NAX ZEOLITE

Isotherms of five n-alkanes: propane, butane, pentane, hexane, and hep tane in 13 X zeolite have been measured by microgravimetry. In tempera ture ranges in which the isotherms are reversible, the sorption is des cribed by the statistical model developed by Dupont-Pavlovsky, showing that the sorbed phase is localized, The heat of sorption and the sorb ate-sorbate interaction, obtained from the model, increase with the nu mber of carbons.