Oxidation of styrene to benzaldehyde with hydrogen peroxide in the presence of catalysts obtained by the immobilization of $ H_{3} %$ PW_{12} %$ O_{40} $ on SBA-15 mesoporous material

Abstract Mesoporous SBA-15 functionalized catalysts with controllable $ H_{3} %$ PW_{12} %$ O_{40} $ loadings were prepared using a one-step co-condensation method and used for the oxidation of styrene to benzaldehyde with hydrogen peroxide as the oxidant. These catalysts were well characterized by...
Ausführliche Beschreibung

Abstract Mesoporous SBA-15 functionalized catalysts with controllable $ H_{3} %$ PW_{12} %$ O_{40} $ loadings were prepared using a one-step co-condensation method and used for the oxidation of styrene to benzaldehyde with hydrogen peroxide as the oxidant. These catalysts were well characterized by Fourier transform infrared spectroscopy, Raman scattering spectroscopy, low angle X-ray diffraction, wide angle X-ray diffraction, scanning electronic microscopy, transmission electron microscopy and $ N_{2} $ adsorption–desorption. The results showed that $ H_{3} %$ PW_{12} %$ O_{40} $ was successfully incorporated into the mesoporous channels of SBA-15, which increased the specific surface area of the active components. These catalysts were applied to catalyze styrene oxidation in the presence of cheap and green hydrogen peroxide, and the key reaction parameters including $ H_{3} %$ PW_{12} %$ O_{40} $ loading, reaction temperature, solvent, $ H_{2} %$ O_{2} $ amount, and reaction time on the catalytic performance were investigated. The heterogeneous $ H_{3} %$ PW_{12} %$ O_{40} $-catalyzed styrene oxidations showed the oxidation product was benzaldehyde as the only product. This route showed green and simple property. Ausführliche Beschreibung