XANES determination of chromium oxidation states in glasses: comparison with optical absorption spectroscopy - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of the American Ceramic Society Année : 2007

XANES determination of chromium oxidation states in glasses: comparison with optical absorption spectroscopy

Résumé

The oxidation state of chromium in glasses melted in an air atmosphere with and without refining agents was investigated by Cr K-edge X-ray Absorption Near-Edge Structure (XANES) and optical absorption spectroscopy. A good agreement in the relative proportion of Cr(III) and Cr(VI) is obtained between both methods. We show that the chemical dependence of the absorption coefficient of Cr(III) is less important in XANES than in optical absorption spectroscopy. The comparison of glasses melted under different conditions provides an indirect assessment of the molar extinction coefficient of Cr(VI) in glasses.
Fichier principal
Vignette du fichier
XANES_Cr.pdf (111.76 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-00148793 , version 1 (23-05-2007)

Identifiants

Citer

Olivier Villain, Georges Calas, Laurence Galoisy, Laurent Cormier, Jean-Louis Hazemann. XANES determination of chromium oxidation states in glasses: comparison with optical absorption spectroscopy. Journal of the American Ceramic Society, 2007, 90 (11), pp.3578-3581. ⟨10.1111/j.1551-2916.2007.01905.x⟩. ⟨hal-00148793⟩
176 Consultations
575 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More