Spatially coupled catalytic ignition of CO oxidation on Pt: mesoscopic versus nano-scale

Spatial coupling during catalytic ignition of CO oxidation on μm-sized Pt(hkl) domains of a polycrystalline Pt foil has been studied in situ by PEEM (photoemission electron microscopy) in the 10(−5) mbar pressure range. The same reaction has been examined under similar conditions by FIM (field ion m...

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Detalles Bibliográficos
Autores principales: Spiel, C., Vogel, D., Schlögl, R., Rupprechter, G., Suchorski, Y.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2015
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4691231/
https://www.ncbi.nlm.nih.gov/pubmed/26021411
http://dx.doi.org/10.1016/j.ultramic.2015.05.012
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author Spiel, C.
Vogel, D.
Schlögl, R.
Rupprechter, G.
Suchorski, Y.
author_facet Spiel, C.
Vogel, D.
Schlögl, R.
Rupprechter, G.
Suchorski, Y.
author_sort Spiel, C.
collection PubMed
description Spatial coupling during catalytic ignition of CO oxidation on μm-sized Pt(hkl) domains of a polycrystalline Pt foil has been studied in situ by PEEM (photoemission electron microscopy) in the 10(−5) mbar pressure range. The same reaction has been examined under similar conditions by FIM (field ion microscopy) on nm-sized Pt(hkl) facets of a Pt nanotip. Proper orthogonal decomposition (POD) of the digitized FIM images has been employed to analyze spatiotemporal dynamics of catalytic ignition. The results show the essential role of the sample size and of the morphology of the domain (facet) boundary in the spatial coupling in CO oxidation.
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spelling pubmed-46912312016-01-29 Spatially coupled catalytic ignition of CO oxidation on Pt: mesoscopic versus nano-scale Spiel, C. Vogel, D. Schlögl, R. Rupprechter, G. Suchorski, Y. Ultramicroscopy Article Spatial coupling during catalytic ignition of CO oxidation on μm-sized Pt(hkl) domains of a polycrystalline Pt foil has been studied in situ by PEEM (photoemission electron microscopy) in the 10(−5) mbar pressure range. The same reaction has been examined under similar conditions by FIM (field ion microscopy) on nm-sized Pt(hkl) facets of a Pt nanotip. Proper orthogonal decomposition (POD) of the digitized FIM images has been employed to analyze spatiotemporal dynamics of catalytic ignition. The results show the essential role of the sample size and of the morphology of the domain (facet) boundary in the spatial coupling in CO oxidation. Elsevier 2015-12 /pmc/articles/PMC4691231/ /pubmed/26021411 http://dx.doi.org/10.1016/j.ultramic.2015.05.012 Text en © 2015 The Authors http://creativecommons.org/licenses/by/4.0/ This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Spiel, C.
Vogel, D.
Schlögl, R.
Rupprechter, G.
Suchorski, Y.
Spatially coupled catalytic ignition of CO oxidation on Pt: mesoscopic versus nano-scale
title Spatially coupled catalytic ignition of CO oxidation on Pt: mesoscopic versus nano-scale
title_full Spatially coupled catalytic ignition of CO oxidation on Pt: mesoscopic versus nano-scale
title_fullStr Spatially coupled catalytic ignition of CO oxidation on Pt: mesoscopic versus nano-scale
title_full_unstemmed Spatially coupled catalytic ignition of CO oxidation on Pt: mesoscopic versus nano-scale
title_short Spatially coupled catalytic ignition of CO oxidation on Pt: mesoscopic versus nano-scale
title_sort spatially coupled catalytic ignition of co oxidation on pt: mesoscopic versus nano-scale
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4691231/
https://www.ncbi.nlm.nih.gov/pubmed/26021411
http://dx.doi.org/10.1016/j.ultramic.2015.05.012
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AT rupprechterg spatiallycoupledcatalyticignitionofcooxidationonptmesoscopicversusnanoscale
AT suchorskiy spatiallycoupledcatalyticignitionofcooxidationonptmesoscopicversusnanoscale

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