The nature of NO adsorption on chromia

The interaction of nitric oxide with chromia catalysts has been investigated. Infrared spectra are reported which suggest that NO adsorbs in two forms: a cis-N 2O 2 dimer and a chelating NO 2 group. Two forms of surface sites have been postulated for these adsorbed species and have been confirmed by...

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Bibliographic Details
Published in:Journal of catalysis 1976, Vol.41 (1), p.72-81
Main Authors: Kugler, E.L., Kadet, A.B., Gryder, J.W.
Format: Article
Language:English
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Summary:The interaction of nitric oxide with chromia catalysts has been investigated. Infrared spectra are reported which suggest that NO adsorbs in two forms: a cis-N 2O 2 dimer and a chelating NO 2 group. Two forms of surface sites have been postulated for these adsorbed species and have been confirmed by selective poisoning experiments with oxygen. Infrared observations are consistent with NO adsorption at chromium cations with either one or two coordination positions. This model has been supported by quantitative adsorption measurements.
ISSN:0021-9517
1090-2694
DOI:10.1016/0021-9517(76)90202-5