高等学校化学学报

高等学校化学学报 ›› 1993, Vol. 14 ›› Issue (7): 889.

• 研究论文 •    下一篇

超细均分散稀土化合物胶体粒子制备

邓红梅, 徐燕, 顾翼东   

  1. 复旦大学分析测试中心, 复旦大学材料科学系, 复旦大学化学系 上海 200433
  • 收稿日期:1992-08-31 修回日期:1992-12-05 出版日期:1993-07-24 发布日期:1993-07-24
  • 通讯作者: 邓红梅
  • 基金资助:

    国家自然科学基金

The Preparation of Ultrafine Monodispersed Colloidal Particles of Rare Earth Compounds

DENG Hong-Mei, XU Yan, KU Yih-Tong   

  1. Center of Analysis & Measurement, Depart.of Materials Science, Depart, of Chem., Fudan Univ., Shanghai, 200433
  • Received:1992-08-31 Revised:1992-12-05 Online:1993-07-24 Published:1993-07-24

PDF (PC)

被引次数

7

摘要： 利用尿素分解法制得轻、中、重稀土化合物的超细均分散胶体粒子,详细探讨了浓度、pH值、陈化温度、陈化时间及共存阴离子等因素对制备过程的影响,获得了各种粒子的最佳制备条件.

关键词: 超细粒子, 均分散粒子, 稀土, 尿素分解法

Abstract: Aseries of ultraf ine monodispersed colloidal particles of rare earth compounds were obtained by urea decomposition.The effects of various parameters, such as concentration, pH, aging temperature and time, and the nature of anions on the resulting precipitate particles were studied systematically.The optimal preparation conditions for the corresponding REparticles were concluded and discussed in detail.Powders obtained all had a relative large BETsurface area, which are more than 29 m2/g.

Key words: Ultrafine particles, Monodispersed colloidal particles, RE compounds, Urea decomposition method

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