書誌事項
- タイトル別名
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- Effect of Stabilizing Agents on Synthesis of Monodispersed Al<sub>2</sub>O<sub>3</sub> Powders by Hydrolysis of Aluminium Sec-Butoxide
- タンブンサン Al2O3 ビリュウシ ノ ゴウセイ ニ オヨボス アンテイカザ
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Effects of hydrolysis-rate-control-additives (carbonyl compounds such as ethylacetoacetate and acetylacetone) on the hydrolysis behavior of aluminium secondary butoxide and condition for the formation of monodispersed alumina particles were investigated. The reactive enol form of the carbonyl compounds substituted butoxyl group of aluminium secondary butoxide and chelated the aluminium atom. The chelating ligand would not be easily removed upon hydrolysis reaction because the aluminium-ligand bond was sufficiently strong. As a consequence, the rate of hydrolysis and polycondensation of modified precursor decreased. By hydrolyzing this modified stable precursor, the monodispersed alumina particles were prepared in the wide range of water concentration; about 8 times that of non-modified precursor when 0.006mol/l ethylacetoacetate was added and about 4 times when 0.006mol/l acetylacetone was added. The average particle size of obtained monodispersed particles and the geometrical standard deviation were 0.2μm and 1.18, respectively. The morphology of particles changed with increasing water concentration as follows; agglomerates of coarse texture→monodispersed particles→agglomerates of fine texture.
収録刊行物
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- Journal of the Ceramic Society of Japan (日本セラミックス協会学術論文誌)
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Journal of the Ceramic Society of Japan (日本セラミックス協会学術論文誌) 100 (1165), 1140-1144, 1992
公益社団法人 日本セラミックス協会
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詳細情報 詳細情報について
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- CRID
- 1390001205276716288
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- NII論文ID
- 110002290090
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- NII書誌ID
- AN10040326
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- ISSN
- 18821022
- 09145400
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- NDL書誌ID
- 3784329
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- データソース種別
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- JaLC
- NDL
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- 使用不可