Microstructure of Al<sub>2</sub>O<sub>3</sub> Xerogels and Aerogels from Aluminum-tri-<i>sec</i>-Butoxide Modified with Ethylacetoacetate

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  • TADANAGA Kiyoharu
    Department of Applied Materials Science, College of Engineering, Osaka Prefecture University
  • IWAMI Tomoaki
    Department of Applied Materials Science, College of Engineering, Osaka Prefecture University
  • MINAMI Tsutomu
    Department of Applied Materials Science, College of Engineering, Osaka Prefecture University
  • TOHGE Noboru
    Department of Metallurgical Engineering, College of Science and Engineering, Kinki University

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Other Title
  • アセト酢酸エチルによって化学修飾されたアルミニウムトリセカンダリーブトキシドから作製したAl<sub>2</sub>O<sub>3</sub>キセロゲル及びエアロゲルの細孔構造
  • アセト酢酸エチルによって化学修飾されたアルミニウムトリセカンダリーブトキシドから作製したAl2O3キセロゲル及びエアロゲルの細孔構造
  • アセト サクサン エチル ニ ヨッテ カガク シュウショクサレタ アルミニウム

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Description

Microstrucutre of Al2O3 xerogels and aerogels prepared from aluminum-tri-sec-butoxide (Al (O-sec-Bu)3) modified with ethylacetoacetate (EAcAc) was investigated for controlling the microstructure of Al2O3. The specific surface area and the pore volume of heat-treated xerogels decreased with an increase in the EAcAc/Al (O-sec-Bu)3 molar ratio, whereas the size of pores was not affected by the ratio. The specific surface area of aerogels decreased monotonously with an increase in the heat-treatment temperature up to 1000°C and was larger than that of xerogels in the whole temperature range of heat treatment, while that of xerogels decreased with increasing temperature due to sintering and drastically decreased at 1000°C.

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