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Highly Selective Oxidation of Styrene Over FeCl3-Imidazolium Ionic Liquid Grafted SBA-15

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Abstract

A composite material (FeSIL) prepared by FeCl3-imidazolium ionic liquid grafted on SBA-15 exhibited effective catalytic activity for solvent-free oxidation of styrene into benzaldehyde with high selectivity using H2O2 oxidant and it presented easy recovery and reusability. In situ DRIFTS spectra for styrene and H2O2 adsorption showed that an intermediate Fe3+–π surface complex on the catalyst surface was responsible for the activation of styrene and its reaction with H2O2 molecules on the surface or in the bulk phase.

Graphic Abstract

Iron-chloride immobilized ionic liquid (FeSIL) was prepared by N-methylimidazole reacting with chloropropylsilane grafted on SBA-15 and coordinating of FeCl3 to the imidazolium on the surface. The higher catalytic activity of the catalyst for effective oxidation of styrene under solvent-free condition were achieved The catalyst can be easily recovered and effectively reused without a significant loss in its activity.

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Acknowledgements

We make a great acknowledgment for the financial support of this work by the National Natural Science Foundation of China (No. 21671050).

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Authors and Affiliations

  1. Key Lab for Photonic and Electronic Bandgap Materials, Ministry of Education, School of Chemistry and Chemical Engineering, Harbin Normal University, No. 1 Shida Road Limin Development Zone, Harbin, 150025, People’s Republic of China

    Shengnan Zhang, Hongmei Wang, Ruibai Cang, Bin Lu, Jingxiang Zhao & Qinghai Cai

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  1. Shengnan Zhang
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  2. Hongmei Wang
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  3. Ruibai Cang
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  4. Bin Lu
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  6. Qinghai Cai
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Correspondence to Bin Lu or Qinghai Cai.

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Zhang, S., Wang, H., Cang, R. et al. Highly Selective Oxidation of Styrene Over FeCl3-Imidazolium Ionic Liquid Grafted SBA-15. Catal Lett 149, 2994–2999 (2019). https://doi.org/10.1007/s10562-019-02866-9

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  • DOI: https://doi.org/10.1007/s10562-019-02866-9

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