Abstract
Titanium silicalite (TS-1) is known as an active material catalyst in the epoxidation reaction. In t his study, tungsten oxides (WO 3) with various loading amount have been supported on the TS-1 to increase of the cataly tic acti- vity of the TS-1 material. The solids structure and property were investigated by X-ray diffraction (XRD), temperature programmed reduction (TPR), ultra violet-visible dif fuse reflectance (UV-Vis-DR) and infrared (IR) spectroscopy and scanning electron microscopy (SEM) techniques. The results showed that the structure of TS-1 is not col lapsed after impregnation of WO 3. It was also found that tungsten species have interacted with the silanol groups on the surface of TS-1.
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