Characterization of Formation and Oxidation of Green Rust (Cl^-) Suspension
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概要
- 論文の詳細を見る
Green rust (GR) containing both ferrous (Fe(II)) and ferric (Fe(III)) ions is formed in an aqueous solution with a relatively low electrochemical potential. In this study, in order to understand the formation and oxidation of GR, a suspension of GR containing chloride ions (GR(Cl−)) was synthesized and subsequently oxidized by injecting nitrogen gas containing oxygen under different conditions. X-ray diffraction (XRD) measurements were performed for identifying the solid particles formed under different conditions. The results show that the GR(Cl−) suspension was formed from specific concentrations of hydroxyl, ferrous, and ferric ions. The pH values and oxidation-reduction potential (ORP) of the aqueous solution were measured during oxidation of the GR(Cl−) suspension. It was observed that because of oxygen injection, GR(Cl−) was transformed into iron oxides such as α-FeOOH, γ-FeOOH, and Fe3O4. These iron oxide and oxyhydroxide species formed by oxidation were dependent on the oxidation conditions such as temperature. This suggested that conditions of aqueous solution are crucial for the transformation of GR(Cl−) into different iron oxides and oxyhydroxides.
- 社団法人 日本鉄鋼協会の論文
- 2009-11-15
著者
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Inoue Katsuya
Institute Of Multidisciplinary Research For Advanced Materials Tohoku University
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Inoue Katsuya
Institute For Molecular Science And Grad. Univ. Advanced Studies
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Suzuki S
Institute Of Multidisciplinary Research For Advanced Materials Tohoku University
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SUZUKI SHIGERU
Institute of Gastroenterology, Tokyo Women's Medical University
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SHINODA Kozo
Institute for Advanced Materials Processing (SOZAIKEN), Tohoku University
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NAGATA Futoshi
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University
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Inoue Katsuya
Inst. Of Multidisciplinary Res. For Advanced Materials Tohoku Univ.
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Shinoda Kozo
Inst. Of Multidisciplinary Res. For Advanced Materials Tohoku Univ.
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Nagata Futoshi
Institute Of Multidisciplinary Research For Advanced Materials Tohoku University
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Suzuki Shigeru
Institute For Advanced Materials Processing Tohoku University
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Inoue Katsuya
Institute For Molecular Science
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SHINODA Kozo
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University
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