Kinetic Regularity of the Formation of Fe(II)–Fe(III) LDH Structures (Green Rust) on the Steel Surface in Presence of the FeSO 4  and Fe 2 (SO 4 ) 3  Water Solutions

O. M. Lavrynenko; Ya. D. Korol; S. V. Netreba; V. A. Prokopenko

Kinetic Regularity of the Formation of Fe(II)–Fe(III) LDH Structures (Green Rust) on the Steel Surface in Presence of the FeSO₄ and Fe₂(SO₄)₃Water Solutions

O. M. Lavrynenko, Ya. D. Korol, S. V. Netreba, V. A. Prokopenko

Abstract

The kinetic regularity of origin and transformation of the Fe (II)–Fe (III) LDH structures on the steel electrodes surface contacting with FeSO₄ and Fe₂(SO₄)₃ dispersion medium at free access of the air oxygen into the system was studied. X-ray diffraction was chosen as the main method of investigation. It was shown that regardless of oxidation level of iron with its concentration 10²–10³ mg/dm³ on electrode surface the GR(SO₄^2-) phase was formed staying single for almost 5 hours. The phase transformation of embryonic GR(SO₄^2-) surface structures occur with formation of morphological composites of iron-oxygen g-row: lepidocrocite g-FeOOH and magnetite Fe₃O₄, and α-row structure representative, goethite α-FeOOH.

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References

Rusch B.T., Génin J.-M.R., Ruby Ch. et al. Ferrimagnetic properties in FeII-III (oxy)hydroxycarbonate green rusts // Solid State Sci. – 2008 – V. 10, N 1. – P. 40–49.

Hansen H.Ch.B. Green Rusts and Reduction of Pollutants // Abstract of Biogéochimie du cycle du fer: Rouilles vertes et fougérite: colloque de l’academie des sciences, à l’Académie d’agriculture de France, (10 décembre, 2004, France, Paris). – P. 18.

Inoue K., Sekiguchi Ju., Fujita A. et al. Characterization of Different Solid Particles Transformed from Green Rust in Aqueous Solution Using XRD, Mossbauer Spectroscopy, and XANES // ISIJ Int. – 2007. – V. 47, N 10. – P. 1452–1457.

Lewis D.G. Factors influencing the stability and properties of green rusts // Adv. Geoecol. – Reiskirhen, 1997. – V. 30. – P. 345–372.

Géhin A., Ruby Ch., Abdelmoula M., et al. Synthesis of Fe(II-III) hydroxysulphate green rust by coprecipitation // Solid State Sci. – 2002. – V. 4, N 1. – P. 61–66.

Ruby C., Aissa R , Gehin A., et al. Green rust synthesis by coprecipitation of FeII-FeIII ions and mass-balance diagrams // C. R. Geosci. – 2006. – V. 338, N 6–7. – P. 420–432.

Refait P., Abdelmoula M., Genin J.-M.R., Sabot R. Green rust in electrochemical and microbially influenced corrosion of steel // C.R. Geosci. – 2006 – V. 338, N 6–7. – P. 476–487.

Simon L., François M., Refait Ph. et al. Structure of the Fe(II-III) layered double hydroxysulphate green rust two from Rietveld analysis // Solid State Sci. – 2003. – V. 5, N 2. – P. 327–334.

Refait Ph., Gehin A., Abdelmoula M., Genin J.-M.R. Coprecipitation thermodynamics of iron(II–III) hydroxysulphate green rust from Fe(II) and Fe(III) salts // Corros. Sci. – 2003. – V. 45, N 4. – P. 659–676.

Schwertmann U., Fechter H. The formation of green rust and its transformation to lepidocrocite // Clay Miner. – 1994. –V. 29, N 1. – P. 87–92.

Refait Ph., Benali O., Abdelmoula M., Genin J.-M.R. Formation of "ferric green rust" and/or ferrihydrite by fast oxidation of iron(II–III) hydroxychloride green rust // Corros. Sci. – 2003. – V. 45, N 11. – P. 2435–2449.

Srinivasan R., Lin R., Spicer R.L., Davis B.H. Structural features in the formation of the green rust intermediate and g‑FeOOH // Colloids Surf. A. – 1996. – V. 113, N. 1. – P. 97–105.

Olowe A.A., Genin J.-M.R. The mechanism of oxidation of ferrous hydroxide in sulphated aqueous media: Importance of the initial ratio of the reactants // Corros. Sci. – 1991. – V. 32, N 9. – P. 965–984.

Chuhrov V.F., Ermilova L.P., Gorshkov A.I. at al. Hypergenic iron oxides in geological processes. – Moscow: Nauka, 1975 – 207 p

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