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- Title
Modulation Excitation X-Ray Absorption Spectroscopy to Probe Surface Species on Heterogeneous Catalysts.
- Authors
Ferri, Davide; Newton, Mark; Nachtegaal, Maarten
- Abstract
The advantages and open questions of the combination of modulation excitation spectroscopy and phase sensitive detection (PSD) with X-ray absorption spectroscopy (XAS) for the analysis of heterogeneous catalysts at work are reviewed. The characteristic spectral signatures of two different edges (Pd K and Pt L) are described in relation to the red-ox chemistry of Pd/AlO and Pt/AlO with respect to NO reduction by CO and CO oxidation, respectively. Both examples demonstrate that PSD makes XAS sensitive to potentially active species for the catalytic reaction.
- Subjects
X-ray spectroscopy; HETEROGENEOUS catalysis; PALLADIUM catalysts; PLATINUM catalysts; OXIDATION; CARBON monoxide; NITROGEN oxides; ALUMINUM oxide
- Publication
Topics in Catalysis, 2011, Vol 54, Issue 16-18, p1070
- ISSN
1022-5528
- Publication type
Article
- DOI
10.1007/s11244-011-9727-5