Journal
RSC ADVANCES
Volume 5, Issue 93, Pages 76182-76189Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ra14307a
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Funding
- young scientific and technological innovation leader of Bingtuan [2015BC001]
- Innovation project of graduate student in Xinjiang [XJGRI2015042]
- Doctor Foundation of Bingtuan [2013BB010]
- Foundation of Young Scientist in Shihezi University [2013ZRKXJQ03]
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Designing a catalyst with excellent recyclability to improve oxidative desulfurization continues to challenge many researchers. In this study, a H4SiMo12O40@SiO2 catalyst with a core-shell structure was successfully prepared and applied to desulfurize a model oil. Various characterization methods demonstrated that the synthesized H4SiMo12O40@SiO2 catalyst presents a hollow spherical structure and that the active H4SiMo12O40 species is incorporated into the mesoporous SiO2 shell. Under optimal reaction conditions, the desulfurization rate of dibenzothiophene is nearly 100%, and the activation energy of the oxidation reaction of dibenzothiophene is 22.08 kJ mol(-1). These results reveal the excellent catalytic activity of H4SiMo12O40@SiO2 for oxidative desulfurization. The catalyst can be recycled by up to 13 times without significant reductions in catalytic activity; such enhanced recyclability may be attributed to the core-shell structure of the synthesized catalyst.
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