Chinese Journal of Catalysis ›› 2014, Vol. 35 ›› Issue (5): 703-708.DOI: 10.1016/S1872-2067(12)60739-6

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Nanocoating of magnetic cores with sulfonic acid functionalized shells for the catalytic dehydration of fructose to 5-hydroxymethylfurfural

Xiaochen Zhanga, Min Wanga, Yehong Wanga, Chaofeng Zhanga,b, Zhe Zhanga,b, Feng Wanga, Jie Xua   

  1. a State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China;
    b Graduate University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2013-09-21 Revised:2013-10-23 Online:2014-04-18 Published:2014-04-24
  • Supported by:

    This work was supported by the National Natural Science Foundation of China (21073184, 21273231, and 21233008) and Hundred Talents Program of the Chinese Academy of Sciences.

Abstract:

A magnetically recyclable acid catalyst composed of an Fe3O4 core and sulfonic acid functionalized silica shell has been prepared using the reverse microemulsion method. The Fe3O4 core was coated with a phenyl modified silica shell nanolayer, and the phenyl groups were subsequently sulfonated to generate a solid sulfonic acid catalyst. The resulting acid catalyst showed higher activity than the conventional A-15 catalyst and comparable activity to several homogeneous sulfonic acid catalysts for the dehydration of fructose to 5-hydroxymethylfurfural (HMF). This process gave a fructose conversion of 99% with an HMF yield of 82% following 3 h in dimethylsulfoxide at 110 ℃. Furthermore, the catalyst could be magnetically separated and recycled several times without losing its activity.

Key words: Magnetic particle, Nanocatalyst, Fructose dehydration, 5-Hydroxymethylfurfural, Sulfonic acid