Chinese Journal of Catalysis ›› 2016, Vol. 37 ›› Issue (3): 420-427.DOI: 10.1016/S1872-2067(15)61013-0

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Fabrication of amino-functionalized Fe3O4@Cu3(BTC)2 for heterogeneous Knoevenagel condensation

Yanmei Zhanga, Jing Zhangb, Miaomiao Tianb, Gang Chub, Chunshan Quana   

  1. a College of Life Science, Dalian Nationalities University, Dalian 116600, Liaoning, China;
    b School of Chemistry and Material Science, Liaoning Shihua University, Fushun 113001, Liaoning, China
  • Received:2015-10-15 Revised:2015-11-03 Online:2016-02-29 Published:2016-02-29
  • Contact: Yanmei Zhang, Jing Zhang
  • Supported by:

    This work was supported by the National Natural Science Foundation of China (21203017), the Open Fund of State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (N-11-3), the Program for Liaoning Excellent Talents in University (LNET), and the Fundamental Research Funds for the Central Universities (DC201502020304).

Abstract:

Metal organic frameworks (MOFs) are an important platform for heterogeneous catalysts. Although MOFs with a smaller particle size exhibit better catalytic performance because of less diffusion limitations, their separation and recycling after catalytic reactions are difficult. The integration of MOFs with magnetic nanoparticles could facilitate their recovery and separation. Especially, the shell thickness of the core-shell structured composites is controllable. In this study, amino-functionalized Fe3O4@Cu3(BTC)2 was fabricated by a stepwise assembly method and its catalytic performance in Knoevenagel condensation was investigated. The results demonstrated that the magnetic hybrid material exhibited a core-shell structure, with a shell thickness of about 200 nm. Furthermore, it not only exhibited high catalytic activity, but remarkably, it could also be easily recovered magnetically and recycled without obvious loss of catalytic efficiency after three cycles.

Key words: Fe3O4, Metal organic frameworks, Heterogeneous catalyst, Knoevenagel condensation, Magnetic separation