Abstract
Oxidative desulfurization (ODS) of organic compounds containing sulfur element from a model oil was performed using tungsten oxide catalysts supported on mesoporous silica with cubic Ia3d mesostructure, well-defined mesopores (7.2 nm), high surface area (719 m2/g), and three-dimensional pore network (WO x /KIT-6). The prepared WO x /KIT-6 catalysts (5–20 wt% WO x ) were characterized by X-ray diffraction analysis, N2 sorption measurements, electron microscopy, H2-temperature programmed reduction, Raman spectroscopy, and thermogravimetric analysis. Among the mesoporous catalysts, 10 wt% WO x /KIT-6 exhibited the best catalytic performance. Sulfur-containing organic compounds, such as dibenzothiophene, 4,6-dimethyldibenzothiophene, and benzothiophene, were completely (100 %) removed from the model oil over 10 wt% WO x /KIT-6 catalyst in 2 h. In addition, the catalyst could be reused several times with only slight decrease in catalytic activity.
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Acknowledgements
This work was supported by the cooperative R&D Convergence Program of MSIP (Ministry of Science, ICT, and Future Planning) and ISTK (Korea Research Council for Industrial Science and Technology) of Republic of Korea (grant B551179-12-07-00).
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Li, Z., Li, C., Park, S.B. et al. Highly efficient mesoporous WO x /KIT-6 catalysts for oxidative desulfurization of dibenzothiophene with hydrogen peroxide. Res Chem Intermed 44, 3687–3695 (2018). https://doi.org/10.1007/s11164-018-3386-0
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DOI: https://doi.org/10.1007/s11164-018-3386-0