高等学校化学学报 ›› 1993, Vol. 14 ›› Issue (7): 971.

• 研究论文 • 上一篇    下一篇

二氧化钛凝胶粉末热处理过程研究

刘双怀1, 周根陶1, 彭定坤2, 周贵恩3, 贾云波3, 陆斌3   

  1. 1. 中国科学技术大学应用化学系;
    2. 中国科学技术大学材料科学与工程系;
    3. 中国科学技术大学, 结构成分开放研究实验室, 合肥 230026
  • 收稿日期:1992-07-18 修回日期:1993-02-25 出版日期:1993-07-24 发布日期:1993-07-24
  • 通讯作者: 刘双怀.
  • 作者简介:第一作者:男, 56岁, 副教授.
  • 基金资助:

    国家自然科学基金

A Study of the Heat Treatment Process of Titanium Oxide Xerogels

LIU Shuang-Huai1, ZHOU Gen-Tao1, PENG Ding-Kun2, ZHOU Gui-En3, JIA Yuh-Bo3, LU Bin3   

  1. 1. Dept, of Appl.Chem., Univ.of Sci.& Techn.of China, Hefei, 230026;
    2. Dept, of Mater.Sci.&.Eager., Univ.of Sci.& Techn.of China, Hefei, 230026;
    3. Structure Res.Lab., Univ.of Sci.& Techn.of China, Hefei, 230026
  • Received:1992-07-18 Revised:1993-02-25 Online:1993-07-24 Published:1993-07-24

摘要: 本文对非极性溶剂中用溶胶-凝胶法制备的二氧化钛凝胶粉末,在氧气氛中于不同升温速率下的热处理过程进行了研究,以热分析、FT-IR光谱、X射线衍射和透射电镜分别对不同升温速率下热处理后得到的二氧化钛纳米超微粉的相组成、相结构和形状、大小及分布进行了分析.结合晶粒大小随热处理温度的变化关系,提出了可能的相变机制.

关键词: 二氧化钛, 溶胶-凝胶, 超微粉

Abstract: In this paper, we investigated the calcined process of titanium oxide xerogels, which were prepared in the nonpolar solvents (C6H6, CCl4) by sol-gel method at different heat rate in O2 atmosphere.The phase composition and structure, the particle shape, size and distribution of the derived titanium oxide ultrafine powder were analyzed by differential thermal analysis, thermal gravimetry, FT-IRspectra, X-ray diffraction and transmission electron microscope.The possible mechanism of phase transition was given in terms of grain size varing with annealed temperature.

Key words: Titanium oxide, Sol-gel, Ultrafine powder

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