高等学校化学学报 ›› 2000, Vol. 21 ›› Issue (2): 263.

• 论文 • 上一篇    下一篇

纳米铬粉的制备研究

程起林1, 赵斌2, 古宏晨1   

  1. 1. 华东理工大学技术化学物理研究所;
    2. 华东理工大学化学系, 上海 200237
  • 收稿日期:1999-04-06 出版日期:2000-02-24 发布日期:2000-02-24
  • 通讯作者: 程起林(1973年出生),男,硕士,助教,主要从事纳米材料的制备研究.
  • 基金资助:

    国家自然科学基金(批准号:59674026,29636010)资助

Studies on the Preparation of Cr Nanometer Powder

CHENG Qi-Lin1, ZHAO Bin2, GU Hong-Chen1   

  1. 1. Institute of Technical Chemistry and Physics;
    2. Department of Chemistry, East China University of Science and Technology, Shanghai 200237, China
  • Received:1999-04-06 Online:2000-02-24 Published:2000-02-24

摘要: 以CrCl3为原料,三乙基硼氢化钠为还原剂,聚乙烯吡咯烷酮为分散剂,PdCl2为成核剂,于甲苯溶剂中制备出平均粒径约50nm的铬粉,反应温度、反应物浓度、分散剂与成核剂的添加是影响粒径的主要因素.同时探讨了反应的机理与铬粉的热稳定性.

关键词: 纳米铬粉制备, 分散剂, 成核剂, 热稳定性

Abstract: Cr nanometer powder with mean diameter 50 nm was prepared in an organic solution of CrCl3, using sodium triethylborohydride as a reducing agent, toluene as a solvent, PVPas a dispersant, PdCl2as a nucleator. The temperature, the concentration of reactants and the addition of dispersant and nucleator were the main factors affecting the particle size. Also the mechanism and thermal stability of Cr nanometer powder were discussed.

Key words: Preparation of Cr nanometer powder, Dispersant, Nucleator, Thermal stability

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