Preparation of Porous ZrO<sub>2</sub>-SiO<sub>2</sub> Glasses by the Sol-Gel Method

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  • KAMIYA Kanichi
    Department of Industrial Chemistry, Faculty of Engineering, Mie University
  • MABE Shigeto
    Department of Industrial Chemistry, Faculty of Engineering, Mie University
  • YOKO Toshinobu
    Department of Industrial Chemistry, Faculty of Engineering, Mie University Institute for Chemical Research, Kyoto University
  • TANAKA Katsuhisa
    Department of Industrial Chemistry, Faculty of Engineering, Mie University

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Other Title
  • ゾルゲル法による多孔性ZrO<sub>2</sub>-SiO<sub>2</sub>ガラスの調製
  • ゾルゲルホウ ニ ヨル タコウセイ ZrO2 SiO2 ガラス ノ チョウセイ
  • Effect of Hydrolysis-Condensation Conditions on Pore Characteristics
  • 細孔特性に及ぼす加水分解・縮重合反応条件の影響

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The effect of parameters involved in the sol-gel preparation of the monolithic porous ZrO2-SiO2 glasses on the pore characteristics has been investigated. Followings have been obtained.<br>(1) A high hydrolysis temperature seemed to be favored to form large micropores in the resultant glasses.<br>(2) The surface area (SSA), pore volume (PV) are decreased by increasing heating temperature, while mean pore radius (MPR) remained almost unchanged.<br>(3) The influence of the content of HCl used as a catalyst was most remarkable. As the HCl content becomes higher, the larger MPR resulted.<br>On the basis of above results, the porous monolithic ZrO2-SiO2 glasses containing ZrO2 up to 14.4mol% have been made via sol-gel reaction at 80°C using h-value as high as 0.5, i-C3H7OH as a solvent. The pore size as large as 40-60Å in diameter, SSA and PV ranging from 450 to 550m2g-1 and 0.4 to 0.7ml·g-1, respectively, have been attained. Those glasses are highly alkaline-resistant compared to the porous SiO2 glass.

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