ZSM-5 ZEOLITE MODIFIED WITH ZIRCONYL IONS

Some properties of the ZSM-5 zeolite modified with ZrO2+ ions in an ex change reaction in water medium have been investigated. The simultaneo us exchange of Na+ ions with H+ cannot be avoided. XPS chemical shift confirms the incorporation of zirconium into the zeolite network. MAS NMR spectra are typical as for ZSM-5 zeolite. All ZrO-HNa-ZSM-5 zeolit e samples catalyse the ammoxidation of m-xylene. X-ray diffractograms before and after ammoxidation proved the preservation of the ZSM-5 zeo lite structure.