Oxidation of green rust suspensions containing different chromium ion species

Katsuya Inoue, Kozo Shinoda, Shigeru Suzuki, Yoshio Waseda

Research output: Contribution to journalArticle

3 Citations (Scopus)

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 languageEnglish
Pages (from-to)1421-1427
Number of pages7
JournalCorrosion Science
Volume52
Issue number4
DOIs
Publication statusPublished - 2010 Apr 1

Keywords

  • A. Iron
  • A. Steel
  • B. AFS
  • B. XRD
  • C. Atmospheric corrosion

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Science(all)

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