STUDY ON CATALYTIC ACTIVITY OF TIO2/SIO2 IN THE OXIDATION OF STYRENE

Abstract

All TiO₂/SiO₂ samples were prepared by the impregnation of Ti(i-PrO)₄ in isopropanol at room temperature followed drying and calcination. The solids were characterized by several techniques including X - ray diffraction (XRD), IR spectroscopy, Scanning Electron Microscopy (SEM). No reflection lines of TiO₂ are detected at a low content of TiO₂ (< 7%), but are more visible at a higher concentration. The catalysts are tested in the liquid oxidation of styrene under mild conditions, producing mainly benzaldehyde. The effects of variables on the catalytic activity are also investigated.