Using combined XAS DRIFTS to study CO NO Oxidation over Pt Al2O3 catalysts

Combined X-ray absorption spectroscopy (XAS) and diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) were applied to investigate the interaction between reaction atmosphere, adsorbates and Pt oxidation state of Pt Al2O3 model diesel oxidation catalysts under CO NO oxidation conditio...

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Bibliographic Details
Published in:Journal of physics. Conference series 2016-01, Vol.712 (1)
Main Authors: Gänzler, A M, Lichtenberg, H, Frenkel, A I, Casapu, M, Boubnov, A, Wang, D, Grunwaldt, J-D
Format: Article
Language:English
Subjects:
Absorption spectroscopy
Adsorbates
Aluminum oxide
Carbon monoxide
Catalysts
Diffuse reflectance spectroscopy
Fourier transforms
Infrared spectroscopy
Low temperature
Oxidation
Physics
Spectrum analysis
Valence
X ray absorption
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Summary:Combined X-ray absorption spectroscopy (XAS) and diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) were applied to investigate the interaction between reaction atmosphere, adsorbates and Pt oxidation state of Pt Al2O3 model diesel oxidation catalysts under CO NO oxidation conditions. The Pt oxidation state was correlated to the adsorbates on the catalyst's surface. Even at low temperature the reaction atmosphere had a strong impact on the oxidation state of the catalyst, and the oxidation state in turn strongly affected CO adsorption on the Pt particles.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/712/1/012045