Abstract
This study reports the usage of molybdovanadophosphoric acid catalyst on amino-functionalized SBA-15(PMoV2/SBA-15-NH2) for the removal of sulfur from model oil (dibenzothiophene dissolved in n-hexane). To increase the tendency for adsorption of heteropoly acids, mesoporous SBA-15 silica was functionalized with amino groups by postsynthesis grafting, using 3-aminopropyltrimethoxy silane as the coupling agent. Immobilization of molybdovanadophosphoric acid on pure SBA-15 (PMoV2/SBA-15) was also studied for comparison and the catalysts were characterized by physicochemical and spectroscopic methods. It was found that the catalysts exhibit high catalytic activities and PMoV2/SBA-15-NH2 is more durable than PMoV2 impregnated on unmodified mesoporous SBA-15 silica. The results may bring about improvement for oxidative desulfurization of transportation fuels.
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We gratefully acknowledge the financial support of the Nature Science Foundation of Hubei Province of China (2011CHB044) and the Foundation of the Educational Commission of Hubei Province of China (D20121401).
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Li, J., Hu, B., Tan, J. et al. Deep oxidative desulfurization of fuels catalyzed by molybdovanadophosphoric acid on amino-functionalized SBA-15 using hydrogen peroxide as oxidant. Transition Met Chem 38, 495–501 (2013). https://doi.org/10.1007/s11243-013-9716-6
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DOI: https://doi.org/10.1007/s11243-013-9716-6