Crystallization of Titania in Methanol, n-Hexane and Water at High Temperatures

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Amorphous TiO<SUB>2</SUB> was prepared by dissolving TiCl<SUB>4</SUB> to NH<SUB>4</SUB>OH-CH<SUB>3</SUB>OH-H<SUB>2</SUB>O mixed solution and hydrolysis of titanium (IV) tetraisopropoxide. Microcrystalline anatase was fabricated by crystallizing amorphous TiO<SUB>2</SUB> gels in methanol, n-hexane and water at 120∼200°C which were much lower than the crystallization temperature in air. The crystallization behavior could be adequately described by the surface chemical reaction controlled shrinking core model. Crystallization in water was much faster than in methanol and n-hexane, but the sinterability of powder prepared in water was poorer than of that prepared in organic solvents. The addition of requisite amounts of water to organic solvents was found useful in promoting crystallization of gel without loss of powder sinterability.

収録刊行物

  • 高圧力の科学と技術 = The Review of high pressure science and technology  

    高圧力の科学と技術 = The Review of high pressure science and technology 7, 1438-1440, 1998 

    The Japan Society of High Pressure Science and Technology

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各種コード

  • NII論文ID(NAID)
    10002694341
  • NII書誌ID(NCID)
    AN10452913
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    0917639X
  • NDL 記事登録ID
    4494261
  • NDL 雑誌分類
    ZP1(科学技術--化学・化学工業)
  • NDL 請求記号
    Z17-1589
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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