Abstract
Heteroatom of Ti is effectively incorporated into the framework of ordered mesoporous silica materials in strong acidic media by a two-step procedure. The synthesized samples (designated as MTS-9) are characterized by many methods. Results indicate that MTS-9 synthesized maintains mesoporous structure, and MTS-9 (Si/Ti=53) possesses the more tetrahedrally coordinated titanium species. The catalysts are applied for oxidation of propene and styrene in methanol with hydrogen peroxide as the oxidant. As the ratio of Si to Ti is below 53, the increase of titanium content benefits to the formation of benzaldehyde.
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