Abstract
The oxidation of hydrosulphate green rust (GR2(SO42-)) suspension containing different chromium ion species was investigated by X-ray diffraction, X-ray absorption spectroscopy and transmission electron microscopy. The pH, oxidation-reduction potential and amount of dissolved oxygen in aqueous solutions were measured during the reactions. The results show that the addition of Cr(III)2(SO4)3 solution suppresses the transformation of GR2(SO42-) into iron oxyhydroxides and oxides in aqueous solution, while the addition of Na2Cr(VI)O4 solution promotes the transformation of GR2(SO42-) in which Cr(VI) is reduced to Cr(III); α-FeOOH particles were refined by the addition of the chromium ions.
Original language | English |
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Pages (from-to) | 1421-1427 |
Number of pages | 7 |
Journal | Corrosion Science |
Volume | 52 |
Issue number | 4 |
DOIs | |
Publication status | Published - 2010 Apr |
Keywords
- A. Iron
- A. Steel
- B. AFS
- B. XRD
- C. Atmospheric corrosion
ASJC Scopus subject areas
- Chemistry(all)
- Chemical Engineering(all)
- Materials Science(all)