La<SUB>2</SUB>(SO<SUB>4</SUB>)<SUB>3</SUB>-Al<SUB>2</SUB>(SO<SUB>4</SUB>)<SUB>3</SUB>系固溶体の生成と加熱分解生成アルミナの相転移
書誌事項
- タイトル別名
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- Formation of La<SUB>2</SUB>(SO<SUB>4</SUB>)<SUB>3</SUB>-Al<SUB>2</SUB>(SO<SUB>4</SUB>)<SUB>3</SUB> Solid Solution and Phase Transition of Alumina Formed by Thermal Decomposition
- Formation of La2 (SO4)3-Al2 (SO4)3 Solid Solution and Phase Transition of Alumina Formed by Thermal Decomposition.
抄録
Solid solutions of La2(SO4)3 and Al2(SO4)3 were prepared by rapidly drying mixed aqueous solutions using micro-wave heating. The La3+ion is soluble into the anhydrous aluminum sulfate crystal lattice up to about 6mol%. On heating the thermal decomposition starts at 830°C for the pure Al2(SO4)3, while at 760°C for 6mol% La2(SO4)3 contained Al2(SO4)3. The anhydrous aluminum sulfate solid solution thermally decomposes into the η-Al2O3 without any other crystalline phases. The LaAl11O18 is formed after heating the desulfurized product at 1300°C without forming LaAlO3 when the content of La2O3 is less than 6mol%.The La3+ doping increases the stability of η-Al2O3 at high temperatures. The phase transformation of alumina takes place above 1350°C when the amount of La2O3 is 5mol%.
収録刊行物
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- 日本化学会誌(化学と工業化学)
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日本化学会誌(化学と工業化学) 2000 (9), 657-659, 2000
公益社団法人 日本化学会
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詳細情報 詳細情報について
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- CRID
- 1390282679366296960
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- NII論文ID
- 130004137689
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- COI
- 1:CAS:528:DC%2BD3cXms1Slu7Y%3D
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- ISSN
- 21850925
- 03694577
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
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- 使用不可