dc.identifier.uri |
http://dx.doi.org/10.15488/2200 |
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dc.identifier.uri |
http://www.repo.uni-hannover.de/handle/123456789/2225 |
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dc.contributor.author |
Günther, S.
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|
dc.contributor.author |
Liu, H.
|
|
dc.contributor.author |
Menteş, T.O.
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|
dc.contributor.author |
Locatelli, A.
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dc.contributor.author |
Imbihl, R.
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dc.date.accessioned |
2017-11-01T09:44:45Z |
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dc.date.available |
2017-11-01T09:44:45Z |
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dc.date.issued |
2013 |
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dc.identifier.citation |
Günther, S.; Liu, H.; Menteş, T.O.; Locatelli, A.; Imbihl, R.: Spectromicroscopy of pulses transporting alkali metal in a surface reaction. In: Physical Chemistry Chemical Physics 15 (2013), Nr. 22, S. 8752-8764. DOI: https://doi.org/10.1039/c3cp44478c |
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dc.description.abstract |
The NO + H2 reaction on a potassium promoted Rh(110) surface is shown to sustain the formation of spatio-temporal periodic patterns leading to mass transport phenomena. The excitation of pulses and the mass transport mechanism are studied in the 10-7 and 10-6 mbar pressure range, with the potassium coverage varying between K = 0.05 and K = 0.12 ML. Using spectroscopic photoemission and spectroscopic low energy electron microscopy (SPELEEM) as well as related microprobe diffraction techniques, we show that the excitation mechanism comprises a cyclic structural transformation: K + O-coadsorbate → (2 × 1)-N → c(2 × 4)-2O,N → K + O coadsorbate. Laterally resolved spectroscopy demonstrates that potassium is accumulated in front of the nitrogen pulses, suggesting that adsorbed nitrogen acts as a diffusion barrier for potassium. © 2013 The Owner Societies. |
eng |
dc.language.iso |
eng |
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dc.publisher |
Cambridge : Royal Society of Chemistry |
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dc.relation.ispartofseries |
Physical Chemistry Chemical Physics 15 (2013), Nr. 22 |
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dc.rights |
Es gilt deutsches Urheberrecht. Das Dokument darf zum eigenen Gebrauch kostenfrei genutzt, aber nicht im Internet bereitgestellt oder an Außenstehende weitergegeben werden. Dieser Beitrag ist aufgrund einer (DFG-geförderten) Allianz- bzw. Nationallizenz frei zugänglich. |
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dc.subject |
Spectromicroscopy |
eng |
dc.subject |
low energy electron microscopy |
eng |
dc.subject |
nitrogen |
eng |
dc.subject |
SPELEEM |
eng |
dc.subject |
alkali metal (AM) |
eng |
dc.subject.ddc |
540 | Chemie
|
ger |
dc.title |
Spectromicroscopy of pulses transporting alkali metal in a surface reaction |
eng |
dc.type |
Article |
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dc.type |
Text |
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dc.relation.issn |
1463-9076 |
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dc.relation.doi |
https://doi.org/10.1039/c3cp44478c |
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dc.bibliographicCitation.issue |
22 |
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dc.bibliographicCitation.volume |
15 |
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dc.bibliographicCitation.firstPage |
8752 |
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dc.bibliographicCitation.lastPage |
8764 |
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dc.description.version |
publishedVersion |
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tib.accessRights |
frei zug�nglich |
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