化学学报 ›› 2005, Vol. 63 ›› Issue (12): 1141-1146. 上一篇    下一篇

研究简报

纺锤形α-Fe2O3粒子的溶液催化合成

张秀丽,刘辉,魏雨*,马子川   

  1. (河北师范大学化学与材料科学学院 石家庄 050016)
  • 投稿日期:2004-07-14 修回日期:2005-02-24 发布日期:2010-12-10
  • 通讯作者: 魏雨

Catalytic Synthesis of Spindle-type α-Fe2O3 Particles in Solution

ZHANG Xiu-Li, LIU Hui, WEI Yu*, MA Zi-Chuan   

  1. (College of Chemistry, Hebei Normal University, Shijiazhuang 050016)
  • Received:2004-07-14 Revised:2005-02-24 Published:2010-12-10
  • Contact: WEI Yu

以Fe2(SO4)3为原料, 在pH为4~7、微量催化剂Fe2+离子及晶体助长剂NaH2PO4存在下, 沸腾回流, 短时间可直接成长出纺锤形α-Fe2O3超细粒子. 与强迫水解法和水热法比较, 该方法具有操作简单、反应物浓度高、反应条件温和及重现性好等优点. 同时研究了各种因素对产物的轴比及相转化速率的影响.

关键词: 纺锤形α-Fe2O3, 制备, Fe2+离子, 相转化, 催化作用

Spindle-type ultrafine α-Fe2O3 particles were directly synthesized at pH=4~7 under the conditions of boiling reflux in a short time. In this method, Fe2(SO4)3 was used as raw material, NaH2PO4 as growth-regulating agent and trace FeSO4 as catalyst. Compared to the forced hydrolysis method and hydrothermal synthesis, the proposed method was of characteristics of simple operation, high concentration, mild reaction condition, good reproducibility, etc. All kinds of factors that might affect the aspect ratios and phase transformation rate of spindle-type α-Fe2O3 were studied.

Key words: spindle-type α-Fe2O3, preparation, Fe2+ ion, phase transformation, catalysis