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The structure of Ni(II)−Fe(III) hydroxy-chloride green rusts by Mössbauer spectroscopy and X-ray diffraction

  • Catalysys, Corrosion and Surface Phenomena
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Abstract

The crystallographic structure of Ni(II)−Fe(III) hydroxy-chloride green rusts obtained by oxidation of a FexNi1−x(OH)2 precipitate is isomorphous with that of the ferrousferric green rust one and independent of the value of P=Fe/Ni. Mössbauer spectra exhibit two quadrupole doublets after further oxidation of the compounds which correspond to a formula (3-x)Ni(OH)2 · xFeOOH · Fe(OH)2Cl. The Fe3+ ions are found to occupy preferentially the sites close to the Cl− ions and the Ni2+ those far from them. However the ordering of the Fe3+ ions is not perfect.

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Authors and Affiliations

  1. Laboratoire CNRS Maurice Letort UP 6851, Groupe de Spectrométrie Mössbauer Département Sciences des Matériaux, Université de Nancy 1, ESSTIN, Párc R. Bentz, F 54500, Vandoeuvre-Nancy, France

    Ph. Refait & J. -M. R. Génin

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  1. Ph. Refait
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  2. J. -M. R. Génin
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Refait, P., Génin, J.M.R. The structure of Ni(II)−Fe(III) hydroxy-chloride green rusts by Mössbauer spectroscopy and X-ray diffraction. Hyperfine Interact 69, 827–830 (1992). https://doi.org/10.1007/BF02401954

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  • DOI: https://doi.org/10.1007/BF02401954

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