高等学校化学学报

高等学校化学学报 ›› 1995, Vol. 16 ›› Issue (1): 13.

• 论文 • 上一篇    下一篇

微乳液反应法制备氧化铝(含水)超细微粒

陈龙武1, 甘礼华1, 岳天仪1, 周恩绚2   

  1. 1. 同济大学化学系, 上海 200092;
    2. 北京航空航天大学九系, 北京
  • 收稿日期:1994-01-31 修回日期:1994-05-28 出版日期:1995-01-24 发布日期:1995-01-24
  • 通讯作者: 陈龙武,男,54岁,教授.
  • 作者简介:陈龙武,男,54岁.教授.
  • 基金资助:

    国家自然科学基金

Studies on the Preparation of Aluminium Oxide (Hydrous)Ultrafine Particles by the Method of Microemulsion Reaction

CHEN Long-Wu1, GAN Li-Hua1, YUE Tian-Yi1, ZHOU En-Xuan2   

  1. 1. Department of Chemistry, Tongji University, Shanghai, 200092;
    2. The Ninth Department, Beijing University of Aeronauties, Beijing
  • Received:1994-01-31 Revised:1994-05-28 Online:1995-01-24 Published:1995-01-24

PDF (PC)

被引次数

84

摘要： 研究了水、辛烷基苯酚聚氧乙烯醚(TritonX-100)、正己醇、环己烷微乳液体系的组成和性质。当正己醇和Triton X-100的重量比为2:3时,该微乳液体系有较宽且稳定的微乳液相区,是一种制备超细微粒的理想反应体系。在该体系中,通过氢氧比铝的氨沉淀制得了含水氧化铝(α-AlOOH)超细微粒,粒子的平均直径约为6nm,有较好的均匀性。加热转化得到的γ-Al2O3超细粉的比表面为159.2m2·g-1.

关键词: 超细微粒, &alpha, －AlOOH, 含水氧化铝, &gamma, －Al2O3, 微乳液

Abstract: The phase composition and properties of microemulsion system of water, Triton X-100,n-hexanol and cyclohexane, were studied.It shows that when n-hexanol and Triton X-100 is in the weight ratio of 2:3, this microemulsion system has extensive and stable microemulsion phase regions, and therefore is an ideal reaction system for the preparation of ultrafine particles. In the water-in-oil microemulsion system of Triton X-100,n-hexanol, cyclohexane and aluminium hydroxide sol, aluminum hydrous oxide(α-AlOOH) ultrafine particles were prepared by the method of precipitation with NH3 being used. According to transmission electron micrographs the mean diameter of particles is about 6 nm. The uniformity of particles is better. The particles size did not change when α-AlOOHultrafine particles were converted to γ-Al2O3 by heating. The special surface area of the ultrafine γ-Al2O3 powder sample is 159.2 m2·g-1.

Key words: Ultrafine particle, α-AlOOH, Aluminum hydrous oxide, γ-Al2O3, Microemulsion

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