Temperature-programmed desorption of aromatic hydrocarbons from ZSM-5 type zeolites

Temperature-programmed desorption of C6−C12 aromatic hydrocarbons from HZSM-5 and NaZSM-5 in helium stream has been studied. The role of the length, branching and number of alkyl groups was analyzed. It was shown that adsorption of aromatic ring occurs on Na-cations.