Chinese Journal of Catalysis ›› 2016, Vol. 37 ›› Issue (12): 2086-2097.DOI: 10.1016/S1872-2067(16)62543-3

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Efficient oxidation of cinnamon oil to natural benzaldehyde over β-cyclodextrin-functionalized MWCNTs

Zujin Yanga,c, Xia Zhangd, Yanxiong Fangd, Zebao Ruia,c, Hongbing Jib,c   

  1. a School of Chemical Engineering and Technology, Sun Yat-sen University, Guangzhou 510275, Guangdong, China;
    b School of Chemistry, Sun Yat-sen University, Guangzhou 510275, Guangdong, China;
    c Huizhou Research Institute of Sun Yat-sen University, Huizhou 516216, Guangdong, China;
    d Faculty of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, Guangdong, China
  • Received:2016-07-20 Revised:2016-09-01 Online:2016-12-27 Published:2016-12-27
  • Contact: Zebao Rui, Hongbing Ji
  • Supported by:

    This work was supported by the National Natural Science Foundation of China (21376279, 21276102, 21425627), Guangdong Technology Research Center for Synthesis and Separation of Thermosensitive Chemicals (2015B090903061), the Fundamental Research Funds for the Central Universities (14lgpy28), and Guangzhou Science and Technology Plan Projects (2014J4100125).

Abstract:

We have designed and prepared β-cyclodextrin (β-CD)-functionalized multi-walled nanotubes (MWCNTs-g-CD) for the oxidation of cinnamon oil to natural benzaldehyde under aqueous conditions. The synergistic effect of combining MWCNTs with β-CD led to a remarkable increase in the performance of the MWCNTs-g-CD for the catalytic oxidation of cinnamaldehyde, which exhibited 95% cinnamaldehyde conversion and 85% selectivity to natural benzaldehyde with a short reaction time of 10 min. The MWCNTs-g-CD also exhibited outstanding recyclability with good stability, showing no discernible decrease in their catalytic activity over five reaction cycles.

Key words: β-cyclodextrin, Cinnamon oil, Selective oxidation, Benzaldehyde, Multi-walled carbon nanotube, Synergistic effect