書誌事項
- タイトル別名
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- Effect of pH of Colloidal Mother Liquid on Formation of Acicular .ALPHA.-FeOOH Particles Made from Amorphous Ferric Oxyhydroxide.
- アモルファスオキシ スイサンカテツ カラ ノ シンジョウ アルファーFeOOH リュウシ ノ セイセイ ニ オヨボス コロイド ボエキ ノ pH ノ エイキョウ
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The formation process of acicular α-FeOOH particles, which was prepared from the colloidal solution of amorphous ferric oxyhydroxide, was investigated with using IR, XRD and TEM measurements. The formation mechanism of crystal particles was considered to be by the dissolution-recrystallization process. The rate constant and activation energy of the process showed strong pH dependence of the mother liquid. The crystallite size of particles also showed pH dependence. The rate constants increased and reached maximum values, after that decreased with increasing pH. The maximum values showed a tendency to shift on the lower pH side with increasing aging temperature. The activation energy decreased and reached minimum values near pH12.5, and increased at higher pH region exceeding 12.5. On the other hand, the crystallite size of (110) of particles decreased with increasing pH. Their pH dependencies might be due to promotion of crystal growth depend on increasing the supersaturation of solute and inhibitory action of its crystal growth depend on singular adsorption of OH- on the side face parallel to c axis of particles.
収録刊行物
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- 粉体および粉末冶金
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粉体および粉末冶金 46 (3), 235-240, 1999
一般社団法人 粉体粉末冶金協会
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詳細情報 詳細情報について
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- CRID
- 1390282681285350784
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- NII論文ID
- 10002261995
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- NII書誌ID
- AN00222724
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- COI
- 1:CAS:528:DyaK1MXislOqtrk%3D
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- ISSN
- 18809014
- 05328799
- http://id.crossref.org/issn/05328799
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- NDL書誌ID
- 4690167
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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
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可