Oxidation Desulfurization of Fuels by Using Amphiphilic Hierarchically Meso/Macroporous Phosphotungstic Acid/SiO2 Catalysts

  • Du Yue
  • Jiaheng Lei
  • Zhou Lina
  • Guo Zhenran
  • Xiaodi Du
  • Junsheng Li
Article
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Abstract

A series of amphiphilic hierarchically meso/macroporous phosphotungstic acid (HPW)/SiO2 materials have been synthesized via a facile post treatment strategy and used as a catalyst for oxidative desulfurization (ODS). The SEM and TEM images revealed that as-prepared catalysts possessed a well-defined meso/macroporous structure and the average pore size of macropores and mesopores were estimated to be 210 and 2.79 nm, respectively. In addition, the existence of the ordered mesoporous structure was further confirmed by Small-angle XRD and N2 adsorption–desorption. The wild-angle XRD and FT-IR spectra proved Keggin-type HPW incorporated into the silica matrix. The lipophilicity of catalysts was tested by the contact angle, which exhibited that the lipophilicity of catalysts had been improved increased with the usage of modifier. The dibenzothiophene removal of amphiphilic hierarchically porous HPW/SiO2 catalysts indicated that there was an optimum hydrophilic-ipophilic balance in ODS. The excellent performance in oxidative desulfurization can be ascribed to the advantages of the peculiar hierarchically meso/macroporous structure and the lipophilicity of catalyst which promoted the mass transport of aromatic sulfide in the pore channel and model fuel effectively. Moreover, the catalyst also exhibited excellent reusability with only slight performance decrease after regenerating for over 6 cycles.

Graphical Abstract

Keywords

Amphiphilic catalyst Hierarchical pores Phosphotungstic acid Oxidative desulfurization 

Notes

Acknowledgements

This work was financially supported by the National Nature Science Foundation of China (No. 21476177). 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

10562_2018_2317_MOESM1_ESM.doc (289 kb)
Supplementary material 1 (DOC 289 KB)

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Copyright information

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

Authors and Affiliations

  • Du Yue
    • 1
  • Jiaheng Lei
    • 2
  • Zhou Lina
    • 1
  • Guo Zhenran
    • 2
  • Xiaodi Du
    • 2
  • Junsheng Li
    • 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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