Adsorption of Volatile Organic Compounds on Zeolite L

The adsorption properties of commercial zeolite L for various types of probe molecules selected from different families of volatile organic compounds were studied. The probe molecules had various sizes and polarities and included hexane isomers ( n -hexane and cyclohexane), aromatic molecules (benzene and toluene), oxygenated molecules (ethanol, acetone, and methyl ethyl ketone), and a chlorinated molecule (trichloroethane). The adsorption isotherms were determined at two temperatures and modeled by the Dubinin–Astakhov (DA) and Tóth equations. The DA equation was applicable for a broader range of experimental conditions.