催化学报

催化学报 ›› 2014, Vol. 35 ›› Issue (1): 21-27.DOI: 10.1016/S1872-2067(12)60685-8

• 研究论文 • 上一篇    下一篇

Polyvinyl amine coated Fe3O4@SiO2 magnetic microspheres for Knoevenagel condensation

Farzad Zamania,b, Elham Izadia,b   

  1. a Department of Chemistry, Shahreza Branch, Islamic Azad University, Shahreza 31186145, Isfahan, Iran;
    b Laboratory of Applied Chemistry, Central Laboratory Complex, Isfahan Science and Technology Town, Isfahan University of Technology, Isfahan 8415683111, Iran
  • 收稿日期:2013-07-20 修回日期:2013-08-16 出版日期:2013-12-23 发布日期:2014-01-17
  • 通讯作者: Farzad Zamani

Polyvinyl amine coated Fe3O4@SiO2 magnetic microspheres for Knoevenagel condensation

Farzad Zamania,b, Elham Izadia,b   

  1. a Department of Chemistry, Shahreza Branch, Islamic Azad University, Shahreza 31186145, Isfahan, Iran;
    b Laboratory of Applied Chemistry, Central Laboratory Complex, Isfahan Science and Technology Town, Isfahan University of Technology, Isfahan 8415683111, Iran
  • Received:2013-07-20 Revised:2013-08-16 Online:2013-12-23 Published:2014-01-17
  • Contact: Farzad Zamani

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摘要：

Polyvinyl amine coated Fe3O4@SiO2 composite microspheres with a core-shell structure were prepared and employed as a magnetic catalyst for Knoevenagel condensation under mild conditions. The catalyst can be readily recovered using a magnet and reused several times without loss in activity or selectivity. The performance of the magnetic base catalyst was compared with that of polyvinyl amine functionalized mesoporous SBA-15, which showed that the magnetic nanoparticles gave improved reaction rate and yield.

关键词: Basic magnetic catalyst, Fe3O4 nanoparticle, Polyvinyl amine, Knoevenagel condensation

Abstract:

Polyvinyl amine coated Fe3O4@SiO2 composite microspheres with a core-shell structure were prepared and employed as a magnetic catalyst for Knoevenagel condensation under mild conditions. The catalyst can be readily recovered using a magnet and reused several times without loss in activity or selectivity. The performance of the magnetic base catalyst was compared with that of polyvinyl amine functionalized mesoporous SBA-15, which showed that the magnetic nanoparticles gave improved reaction rate and yield.

Key words: Basic magnetic catalyst, Fe3O4 nanoparticle, Polyvinyl amine, Knoevenagel condensation