Influence of tungstate ions on transformation of green rust to ferric oxyhydroxide via aqueous solution investigated by in situ X-ray absorption spectroscopy

被引：1

作者：

Fujieda, S. ^{[1
]}

Yoshino, A. ^{[1
]}

Shinoda, K. ^{[1
]}

Tsuri, S. ^{[2
]}

Suzuki, S. ^{[1
]}

机构：

[1] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 980, Japan

[2] JFE Steel Corp, Steel Res Labs, Tokyo, Japan

来源：

CORROSION SCIENCE | 2014年 / 82卷

关键词：

XANES; EXAFS; oxidation; iron; ATMOSPHERIC CORROSION; STRUCTURAL-ANALYSIS; WEATHERING STEEL; IRON; OXIDATION; CARBONATE; CHLORIDE; FERRIHYDRITE; HYDROXIDE; MOLYBDATE;

D O I：

10.1016/j.corsci.2014.01.003

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Influence of tungstate ions on the transformation of chloride-containing green rust (GR(Cl-)) to fine goethite (alpha-FeOOH) particles due to the oxidation reaction via aqueous solution at about 300 K was investigated by in situ measurements of X-ray absorption spectra. Results showed that the transformation rate of GR(Cl-) in the suspension containing 5 mol% W was lower than that in the suspension without tungstate ions. Almost all tungstate ions in the suspension were adsorbed on GR(Cl-) and alpha-FeOOH. It is probable that the adsorption of tungstate ions reduces the transformation rate of GR(Cl-) and also leads to the precipitation of fine particles. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：85 / 92

页数：8

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