CHARACTERIZATION OF TITANIUM-OXIDE ENCAPSULATED ZEOLITES AND ITS PHOTOCATALYTIC APPLICATION FOR NO DECOMPOSITION

Titanium oxide-encapsulated X and Y zeolites were prepared by ion exch ange with (NH4)2TiO(C2O4)2. The obtained zeolites were characterized b y means of XRD, FT-IR, XPS, UV-vis and photoluminescence spectroscopie s. By the introduction of TiO2+ ions, the zeolites exhibited adsorptio n and photoluminescence bands and became sensitive to UV irradiation. A high catalytic activity of NO decomposition was obtained at room tem perature under UV irradiation. The major products in the presence of o xygen were N2 and N2O. In reference experiments of TiO2 powder signifi cant production of NO2 was observed.