Ti containing USY Zeolites were prepared by impregnation with titanium tetra-butoxide and by the secondary synthesis method with (NH~4)~2TiF~6. The samples were characterized by X-ray diffraction, Raman spectroscopy, n-heptane adsorption isothermal, UV-DRS, and FT- IR. The results indicated that the titanium species were highly dispersed on the surface of USY zeolites when Ti content was below 4. 8% TiO~2. The states of titanium in zeolites were different depending in the preparation conditions. The Ti species in the samples prepared by the secondary synthesis method are mainly located in the framework of zeolites. While the Ti species in the samples prepared by impregnation are in the states of monofunctional and bifunctional bonding to the hydroxyl groups of zeolites.

Key words: TITANIUM, ZEOLITE, X-RAY DIFFRACTION ANALYSIS, RAMAN SPECTROMETRY, ETHANOL