The Role of Surface α-Oxygen in Formation of Cation Radicals at Benzene Adsorption on ZSM-5 Zeolite

Article abstract of DOI:10.1021/j100082a026

The role of the atomic oxygen form (α-form) produced upon N2O decomposition on Fe-containing ZSM-5 in the conversion of adsorbed benzene molecules was studied with the ESR technique. α-Oxygen was shown not to participate in the formation of electron acceptor sites (A_s) responsible for ionization of aromatic compounds.The ionization process proceeded in both the presence and absence of the α-form.But in the latter case, instead of benzene cation radicals, ESR spectra revealed those of phenol resulting from benzene oxidation by α-oxygen.