Reaction Kinetics, Mechanisms and Catalysis

, Volume 109, Issue 1, pp 199–212 | Cite as

Direct side-chain oxidation of ethylbenzene over supported Co4HP2Mo15V3O62 catalysts as a clean and highly efficient approach to producing acetophenone

  • Guixian Li
  • Yazhen Li
  • Ruina Mu
  • Yanduo Xu
  • Peng Dong
Article
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Accepted:

Abstract

The surface of acid-activated attapulgite (ATP) was modified by grafting 3-aminopropyltriethoxysilane (APTES) for the immobilization of heteropolyacid salt Co4HP2Mo15V3O62 (CoHPAs). The samples were characterized by Fourier transform infrared spectroscopy, X-ray powder diffraction, specific surface area measurements, thermal analysis and field emission scanning electron microscopy. The catalytic activity was tested for the oxidation of ethylbenzene in the presence of 50 % H2O2 for the first time in this work. It was found that the activity of the ATP supported CoHPAs catalyst is obviously influenced by APTES grafting. The CoHPAs/ATPAPTES catalyst exhibits high activity owing to the silylation of ATP, with the conversion of ethylbenzene and selectivity of acetophenone up to 72.7 and 95.4 %, respectively. The results also show that the CoHPAs/ATPAPTES catalyst can be reused at least five times without significant decrease of activity.

Keywords

Ethylbenzene oxidation Catalyst Acetophenone Attapulgite Amine-functionalized 
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Notes

Acknowledgments

Funding

The authors are grateful for the financial support of the National Natural Science Foundation of China (20961004).

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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2013

Authors and Affiliations

  • Guixian Li
    • 1
  • Yazhen Li
    • 1
  • Ruina Mu
    • 1
  • Yanduo Xu
    • 1
  • Peng Dong
    • 1
  1. 1.College of Petrochemical TechnologyLanzhou University of TechnologyLanzhouPeople’s Republic of China

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