Effect of Size of Solvent Molecule on the Adsorption of p- and o-Xylene on ZSM-5 Type Zeolites and Mechanism of Adsorption

Summary The adsorption isotherms of p- and o-xylene have been studied on MFI-type zeolites of different alumina to silica ratios from solvents of different molecular sizes. The adsorption is mainly controlled by the shape and size of the pore opening relative to the size and shape of the sorbate and the solvent molecules. Aluminum containing zeolites formed colored π-complexes with p-xylene.