界面活性剤の自己集合体を利用した高比表面積を有する熱安定性メソポーラス酸化スズ粉末の調製

概要

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Thermally stable mesoporous SnO_2 powders was prepared from sodium stannate by utilizing the self-assembly of n-cetylpyridinium chloride (C_<16>PyCl), followed by treatment with phosphoric acid (PA, 0.1 mol. dm^<-3>). Under the most suitable preparation conditions (C_<16>PyCl conc.=2.0 mass%, [C_<16>PyCl]/[Na_2SnO_3・3H_2O]=2.0, [Mesitylene]/[Na_2SnO_3・3H_2O]=2.5, pH=10, and aging temperature=20℃), an ordered mesoporous structure (d_<100>=ca. 3.1 nm) with a large specific surface area (305 m^2・g^<-1>) was obtained after calcination of the resultant solid product (having ordered mesopores of d_<100>= Ca. 4.1 nm) at 600℃ for 5h. It was confirmed that the PA treatment was useful for reducing the growth of SnO_2 crystallites and then improving the thermal stability of the mesoporous structure.
社団法人日本セラミックス協会の論文
2001-06-01