Formation of magnetite in the presence of ferric oxyhydroxides

被引：104

作者：

Ishikawa, T ^{[1
]}

Kondo, Y ^{[1
]}

Yasukawa, A ^{[1
]}

Kandori, K ^{[1
]}

机构：

[1] Osaka Univ Educ, Sch Chem, Kashiwara, Osaka 5828582, Japan

来源：

CORROSION SCIENCE | 1998年 / 40卷 / 07期

关键词：

magnetite; ferric oxyhydroxides;

D O I：

10.1016/S0010-938X(98)00045-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The products of the reactions of ferric oxyhydroxides (alpha-, beta- and gamma-FeOOH) with Ferrous species in O-2-free aqueous systems containing Cl- were characterized by XRD, FTIR and TEM. The reactions using all the FeOOH gave Fe3O4 at 25-100 degrees C and a wide pH range from 3 to 13, accompanying a depletion of FeOOH. The yield of Fe3O4 depended on the molar ratio of OH/Fe(II) in the suspensions, showing a maximum at OH/Fe(II) = 2. The maximum yield of Fe3O4 was in the order of beta-FeOOH > gamma-FeOOH>>alpha-FeOOH. It was revealed that Fe3O4 is formed by the reactions of the dissolved species of Fe(OH)(2) with those of FeOOH. (C) 1998 Elsevier Science Ltd. All rights reserved

引用

页码：1239 / 1251

页数：13

共 17 条

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