Publication
Reference
Chaurand Perrine, Rose Jérôme, Briois Valérie, Salome Murielle, Proux Olivier, Nassif Vivian, Olivi Luca, Susini Jean, Hazemann Jean-Louis, Bottero Jean-Yves (2007). New Methodological Approach for the Vanadium K-Edge X-ray Absorption Near-Edge Structure Interpretation:  Application to the Speciation of Vanadium in Oxide Phases from Steel Slag. J. Phys. Chem. B, 111, 5101 - 5110.
Names
  • Perrine Chaurand
  • Jérôme Rose
  • Valérie Briois
  • Murielle Salome
  • Olivier Proux
  • Vivian Nassif
  • Luca Olivi
  • Jean Susini
  • Jean-Louis Hazemann
  • Jean-Yves Bottero
Article and keywords
Title
New Methodological Approach for the Vanadium K-Edge X-ray Absorption Near-Edge Structure Interpretation:  Application to the Speciation of Vanadium in Oxide Phases from Steel Slag
Abstract
This paper presents a comparison between several methods dedicated to the interpretation of V K-edge X-ray absorption near-edge structure (XANES) features. V K-edge XANES spectra of several V-bearing standard compounds were measured in an effort to evaluate advantages and limits of each method. The standard compounds include natural minerals and synthetic compounds containing vanadium at various oxidation state (from +3 to +5) and in different symmetry (octahedral, tetrahedral, and square pyramidal). Correlations between normalized pre-edge peak area and its centroid position have been identified as the most reliable method for determining quantitative and accurate redox and symmetry information for vanadium. This methodology has been previously developed for the Fe K edge. It is also well adapted for the V K edge and is less influenced by the standard choice than other methods. This methodology was applied on an “environmental sample,” i.e., a well-crystallized leached steel slag containing vanadium as traces. Micro-XANES measurements allowed elucidating the microdistribution of vanadium speciation in leached steel slag. The vanadium exhibits an important evolution from the unaltered to the altered phases. Its oxidation state increases from +3 to +5 together with the decrease of its symmetry (from octahedral to tetrahedral).
Keywords
XANES, Vanadium
Content
spectral data
Year
2007
Journal
Journal of Physical Chemistry B
Volume
111
Number
19
Pages
5101 - 5110
Document type
article
Publication state
published
Doi
10.1021/jp063186i
Identifiers
Experiment/Spectra