Saturation loadings on zeolites vary significantly with reduced temperature in the range 0.60 to 3.5

Saturation loadings on zeolites 4A, 5A and 13X are reported for 56 species over a reduced temperature range 0.6 to 3.5. The data is culled from the literature for the past 64 years from isotherms having a slope of dlnq/dlnp tending towards 1. The subcritical region is modeled using a theoretical equation employing a Rackett liquid density model and crystallographic information of the zeolites; the supercritical region is modelled by an empirical linear loading correlation for individual species. The saturation loading results for both regions are consistent with the proposed models.