RESEARCH ARTICLE

Fabrication of MIL-100(Fe)@SiO2@Fe3O4 core-shell microspheres as a magnetically recyclable solid acidic catalyst for the acetalization of benzaldehyde and glycol

  • Yinlong Hu ,
  • Shuang Zheng ,
  • Fumin Zhang
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  • Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Institute of Physical Chemistry, Zhejiang Normal University, Jinhua 321004, China

Received date: 19 Apr 2016

Accepted date: 30 Aug 2016

Published date: 29 Nov 2016

Copyright

2016 Higher Education Press and Springer-Verlag Berlin Heidelberg

Abstract

Heterogeneous catalysts with convenient recyclability and reusability are vitally important to reduce the cost of catalysts as well as to avoid complex separation and recovery operations. In this regard, magnetic MIL-100(Fe)@SiO2@Fe3O4 microspheres with a novel core-shell structure were fabricated by the in-situ self-assembly of a metal-organic MIL-100(Fe) framework around pre-synthesized magnetic SiO2@Fe3O4 particles under relatively mild and environmentally benign conditions. The catalytic activity of the MIL-100(Fe)@SiO2@Fe3O4 catalyst was tested for the liquid-phase acetalization of benzaldehyde and glycol. The MIL-100(Fe)@SiO2@Fe3O4 catalyst has a significant amount of accessible Lewis acid sites and therefore exhibited good acetalization catalytic activity. Moreover, due to its superparamagnetism properties, the heterogeneous MIL-100(Fe)@SiO2@Fe3O4 catalyst can be easily isolated from the reaction system within a few seconds by simply using an external magnet. The catalyst could then be reused at least eight times without significant loss in catalytic efficiency.

Cite this article

Yinlong Hu , Shuang Zheng , Fumin Zhang . Fabrication of MIL-100(Fe)@SiO2@Fe3O4 core-shell microspheres as a magnetically recyclable solid acidic catalyst for the acetalization of benzaldehyde and glycol[J]. Frontiers of Chemical Science and Engineering, 2016 , 10(4) : 534 -541 . DOI: 10.1007/s11705-016-1596-9

Acknowledgements

This work was supported by the National Natural Science Foundation of China (Grant No. 21576243) and the Public Project of Zhejiang Province of China (2016C37057).

Electronic Supplementary Material

Supplementary material is available in the online version of this article at http://dx.doi.org/10.1007/s11705-016-1596-9 and is accessible for authorized users.
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