Reaction processes on catalytically active surfaces
In this article results of studies are reported in which in-situ infrared-visible sum-frequency generation (IR-VIS SFG) surface vibrational spectroscopy was combined with density functional theory (DFT) ab initio computations to investigate the adsorption of carbon monoxide (CO) on rhodium (Rh) cata...
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| Main Authors: | , , , , |
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| Format: | Chapter/Article |
| Language: | English |
| Published: |
2007
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| In: |
Reactive flows, diffusion and transport
Year: 2007, Pages: 311-340 |
| DOI: | 10.1007/978-3-540-28396-6_12 |
| Online Access: | Verlag, Volltext: http://dx.doi.org/10.1007/978-3-540-28396-6_12 Verlag, Volltext: https://link.springer.com/chapter/10.1007/978-3-540-28396-6_12 
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| Author Notes: | O.R. Inderwildi, D. Starukhin, H.-R. Volpp, D. Lebiedz, O. Deutschmann, and J. Warnatz |
| Summary: | In this article results of studies are reported in which in-situ infrared-visible sum-frequency generation (IR-VIS SFG) surface vibrational spectroscopy was combined with density functional theory (DFT) ab initio computations to investigate the adsorption of carbon monoxide (CO) on rhodium (Rh) catalyst surfaces at elevated substrate temperatures (Ts ≥ 300K) over a wide pressure-range (pco = 10−8−1000 mbar). The experimental studies demonstrated the reversible molecular adsorption of CO up to a pressure of ca. 10 mbar. For higher CO pressures, however, the onset of a new irreversible dissociative CO adsorption pathway could be observed already at a substrate temperature of Ts=300 K. CO dissociation was found to result in the formation of carbon on the surface as the only detectable dissociation product, indicating that CO dissociation occurs via the Boudouard reaction: 2CO → C(ad) + CO2. |
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| Item Description: | Gesehen am 12.06.2018 |
| Physical Description: | Online Resource |
| ISBN: | 9783540283966 |
| DOI: | 10.1007/978-3-540-28396-6_12 |