著者

一ノ瀬 弘道 寺崎 信 勝木 宏昭

出版者

公益社団法人日本セラミックス協会

雑誌

日本セラミックス協会学術論文誌 : Nippon Seramikkusu Kyokai gakujutsu ronbunshi (ISSN:18821022)

巻号頁・発行日

vol.104, no.1212, pp.715-718, 1996-08-01

参考文献数

15

被引用文献数

13 83

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A Peroxo titanic acid (PTA) solution has been prepared by mixing titanic acid wet gel and hydrogen peroxide solution. The PTA solution was a neutral, transparent, stable liquid. The PTA crystallized to form an Anatase phase after calcination at a temperature above 250℃ . When the PTA solution was autoclaved at a temperature above 100℃ for 6h, it changed to a sol containing anatase crystals less than 20 nm in diameter. Aggregation occurred after autoclaving at a temperature above 120℃ . When the PTA solution was heated to 100℃ , it was translucent and stable in spite of containing ultrafine allatase crystals (9 nm in diameter) . It was deduced that the surfaces of anatase crystals are modified by the peroxo groups.