### 含钛USY沸石的制备与表征

1. 南京大学化学化工学院
• 发布日期:2000-06-15

### Preparation and characterizationof Ti containing USY zeolites

Wang Yangdong;Zhang Aimin;Xu Qinhua

• Published:2000-06-15

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.