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Chem. J. Chinese Universities ›› 2009, Vol. 30 ›› Issue (12): 2354.

• Articles • Previous Articles     Next Articles

Preparation of Magnesium Hydroxide Whisker by Glycerol-Frequency Conversion Microwave-Hydrothermal Process

WU Jian-Song1*, XIAO Ying-Kai2, CHEN Lang-Yin1, CHEN Xiao-Wei1   

  1. 1. Chemistry Science and Technology School, Zhanjiang Normal University, Zhanjiang 524048, China;
    2. CAS Key Laboratory of Salt Lake Resources and Chemistry, Institute of Salt Lakes, Chinese Academy of Sciences, Xining 810008, China
  • Received:2009-03-31 Online:2009-12-10 Published:2009-12-10
  • Contact: WU Jian-Song. E-mail: wujs1975@yahoo.com.cn
  • Supported by:

    国家自然科学基金(批准号: 40776071)资助.

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Abstract:

The magnesium hydroxide whisker with excellent quality was synthesized by glycerol-frequency conversion microwave-hydrothermal process with MgCl2·6H2O and NaOH as raw materials. The phase, granularity, structure of crystal morphology of whiskers samples were characterized by X-ray diffraction(XRD), scanning electron microscop(SEM) and transmission electron microscop(TEM). The effect of glycerol-frequency conversion microwave-hydrothermal process on the crystal form, structure and dispersive capability of magnesium hydroxide whisker was investigated. The results show that high quality magnesium hydroxide whiskers with symmetrical granularity, fine crystal form and dispersibility, glabrous surface, as well as little crystal defect are obtained when 15%(volume fraction) of glycerol is added and heated at 180 ℃ for 6 h. The TEM images show that the diameters of whiskers are about 0.1-0.3 μm and the length are about 80-110 μm. The influence of glycerol and frequency conversion microwave on growth of magnesium hydroxide whiskeres was investigated primarily.

Key words: Frequency conversion microwave; Glycerol; Hydrothermal method; Magnesium hydroxide whis-ker

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