MÖSSBAUER STUDIES OF THE REDUCTION OF α-F2O3 CONTAINING ALKALI METAL HYDROXIDES

D.G. Klissurski; I.G. Mitov

doi:doi:10.1051/jphyscol:19792125

Numéro		J. Phys. Colloques Volume 40, Numéro C2, Mars 1979 International Conference on The Applications of The Mössbauer Effect


Page(s)		C2-353 - C2-354
DOI		https://doi.org/10.1051/jphyscol:19792125

International Conference on The Applications of The Mössbauer Effect

J. Phys. Colloques 40 (1979) C2-353-C2-354
DOI: 10.1051/jphyscol:19792125

MÖSSBAUER STUDIES OF THE REDUCTION OF α-F₂O₃ CONTAINING ALKALI METAL HYDROXIDES

D.G. Klissurski and I.G. Mitov

Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Sofia III3, Bulgaria

Résumé
Le mécanisme de réduction par l'hydrogène de α-Fe₂O₃ contenant les hydroxydes de métaux alcalins (Li, Na, K, Rb, Cs) est étudié par spectroscopie Mössbauer. On montre que l'unique produit intermédiaire de la réduction est la magnétite (Fe₃O₄) et que le produit final est α-Fe. Les hydroxydes alcalins accélèrent la réduction sans influencer son mécanisme.

Abstract
The mechanism of reduction with hydrogen of α-Fe₂O₃ and Fe₂O₃ containing hydroxides of various alkali metals (Li, Na, K, Rb and Cs) has been studied by Mössbauer spectroscopy. It was shown that during reduction α-Fe₂O₃ successively passes into magnetite (Fe₃O₄) and α-iron. The alkali hydroxides accelerate the reduction without changing its mechanism.