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Figure 4
(a) Cr K-edge XANES of a few model compounds in which chromium ions are present in either the VI or III oxidation state. (b) XANES spectra of the calcined (at 873 K in oxygen) Cr(0.5 wt%)/SiO2 catalyst, of the catalyst reduced in CO at 673 K, and of the catalyst exposed to atmospheric oxygen after reduction.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 8| Part 2| March 2001| Pages 55-60
doi:10.1107/S090904950001935X
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