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Fabrication and Characterization of Multicore Superparamagnetic Ni0.5Zn0.5Fe2O4/SiO2 Catalyst Support

WANG Hong-Xia1,2, ZHANG Fa-Ling1, CAO Yuan2, ZHOU Bo1, LIU Zhi-Guo1, SU Wen-Hui1*   

    1. Center for the Condensed Matter Science and Technology, Department of Applied Physics, Harbin Institute of Technology, Harbin 150001, China;
    2. Department of Chemistry, Harbin Normal University, Harbin 150025, China
  • Received:2007-11-01 Revised:1900-01-01 Online:2008-07-10 Published:2008-07-10
  • Contact: SU Wen-Hui

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Abstract: A multicore superparamagnetic Ni0.5Zn0.5Fe2O4/SiO2 catalyst support was synthesized by slightly modifying the conventional preparation method, namely, altering the manner of introducing Ni0.5Zn0.5Fe2O4 nanoparticles into TEOS. The modified method resulted in a great increase in specific surface area, saturation magnetization of Ni0.5Zn0.5Fe2O4/SiO2 and better separation in liquid system. The synthesized catalyst supports were characterized by means of X-ray diffraction, N2 gas adsorption-desorption experiments, transmission electron microscopy and a physical properties measurement system(PPMS).

Key words: Superparamagneticity, Multicore, Catalyst surport separation, Saturation magnetization, Specific surface area

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