Frontiers of Chemical Science and Engineering >

2009 , Vol. 3 >Issue 2: 215 - 218

DOI: https://doi.org/10.1007/s11705-009-0055-2

RESEARCH ARTICLE

Synthesis of magnetic Pb/Fe3O4/SiO2 and its catalytic activity for propylene carbonate synthesis via urea and 1,2-propylene glycol

  • Hualiang AN ,
  • Xinqiang ZHAO ,
  • Zhiguang JIA ,
  • Changcheng WU ,
  • Yanji WANG
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  • Hebei Provincial Key Lab of Green Chemical Technology and High Efficient Energy Saving, Hebei University of Technology, Tianjin 300130, China

Received date: 18 Apr 2008

Accepted date: 19 Oct 2008

Published date: 05 Jun 2009

Copyright

2014 Higher Education Press and Springer-Verlag Berlin Heidelberg
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Abstract

To facilitate the recovery of Pb/SiO2 catalyst, magnetic Pb/Fe3O4/SiO2 samples were prepared separately by emulsification, sol-gel and incipient impregnation methods. The catalyst samples were characterized by means of X-ray diffraction and N2 adsorption-desorption, and their catalytic activity was investigated in the reaction for synthesizing propylene carbonate from urea and 1,2-propylene glycol. When the gelatin was applied in the preparation of Fe3O4 at 60°C and the pH value was controlled at 4 in the preparation of Fe3O4/SiO2, the Pb/Fe3O4/SiO2 sample shows good catalytic activity and magnetism. Under the reaction conditions of a reaction temperature of 180°C, reaction time of 2 h, catalyst percentage of 1.7 wt-% and a molar ratio of urea to PG of 1∶4, the yield of propylene carbonate attained was 87.7%.

Key words： Pb/Fe3O4/SiO2 magnetic particle; urea; 1; 2-propylene glycol; propylene carbonate

Cite this article

Hualiang AN , Xinqiang ZHAO , Zhiguang JIA , Changcheng WU , Yanji WANG . Synthesis of magnetic Pb/Fe3O4/SiO2 and its catalytic activity for propylene carbonate synthesis via urea and 1,2-propylene glycol[J]. Frontiers of Chemical Science and Engineering, 2009 , 3(2) : 215 -218 . DOI: 10.1007/s11705-009-0055-2

Acknowledgements

This work has been supported by the National Natural Science Foundation of China (Grant No. 20576025) and the Hebei Provincial Fund for Natural Science (B2007000010).

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