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Deep oxidative desulfurization of fuels catalyzed by molybdovanadophosphoric acid on amino-functionalized SBA-15 using hydrogen peroxide as oxidant

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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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Acknowledgments

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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Correspondence to Bing Hu.

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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

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