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Preparation of ordered meso/macroporous HPW/titania–silica catalyst for efficient oxidative desulfurization of model fuel

  • Yue Du
  • Lina Zhou
  • Zhenran Guo
  • Xiaodi Du
  • Jiaheng Lei
Article
  • 9 Downloads

Abstract

In this study, ordered meso-macroporous titania–silica–polyoxometalate (HPW/SiO2–TiO2) material was prepared in one-pot by evaporation-induced self-assembly (EISA) method, with non-ionic surfactant (P123) and monodisperse polystyrene microspheres applied as co-structure-directing agents. And the oxidative desulfurization (ODS) application of as-synthesized hierarchical nanocomposite materials was tested in model fuel. The characterization results of catalyst suggested that Keggin-type polyoxometalate was successfully incorporated into the ordered meso-macroporous SiO2–TiO2 framework. Moreover, the effect of Lewis acid center of the HPW/SiO2–TiO2 catalyst on ODS process was investigated. The optimum proportion of titanium and silicon ratio on catalyst was found to be 1:1, which exhibited remarkable catalytic performance on aromatic sulfur compounds at mild conditions. It revealed that Lewis acid sites played an important role in selectively adsorb DBT and its derivatives. What’s More, the combination of Lewis acid sites and ordered meso/macroporous architecture of catalyst will further facilitated the mass transport in ODS process. No decrease in the activity was observed after six runs, indicating a good stability of as-prepared catalyst.

Keywords

Meso/macroporous catalyst Oxidative desulfurization Keggin heteropolyacids Titania–silica nanocomposite 

Notes

Acknowledgements

This work was supported by the National Nature Science Foundation of China (Grant Nos. 21476177, 51502218). We declare that we do not have any commercial or associative interest that represents a conflict of interest in connection with the work submitted.

Supplementary material

10934_2018_701_MOESM1_ESM.doc (5.4 mb)
Supplementary material 1 (DOC 5516 KB)

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  • Yue Du
    • 1
  • Lina Zhou
    • 1
  • Zhenran Guo
    • 2
  • Xiaodi Du
    • 2
  • Jiaheng Lei
    • 2
  1. 1.School of Materials Science and EngineeringWuhan University of TechnologyWuhanPeople’s Republic of China
  2. 2.Department of ChemistryWuhan University of TechnologyWuhanPeople’s Republic of China

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