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

Spiel, C., Vogel, D., Schlögl, R., Rupprechter, G., & Suchorski, Y. (2015). Spatially coupled catalytic ignition of CO oxidation on Pt: mesoscopic versus nano-scale. Ultramicroscopy, 159, Pt. 2, 178-183. doi:10.1016/j.ultramic.2015.05.012.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-0027-7D58-E Version Permalink: https://hdl.handle.net/11858/00-001M-0000-002C-AB7D-F
Genre: Journal Article

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2160202.pdf (Publisher version), 3MB
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https://hdl.handle.net/11858/00-001M-0000-0029-4B6F-B
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Copyright Date:
2015
Copyright Info:
Elsevier
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http://creativecommons.org/licenses/by/4.0/

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 Creators:
Spiel, C.1, Author
Vogel, Diana1, 2, Author           
Schlögl, Robert2, Author           
Rupprechter, G.1, Author
Suchorski, Y.1, Author
Affiliations:
1Institute of Materials Chemistry, Vienna University of Technology, 1060 Vienna, Austria, ou_persistent22              
2Inorganic Chemistry, Fritz Haber Institute, Max Planck Society, ou_24023              

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Free keywords: Catalytic reactions; CO oxidation; Field ion microscopy; Photoemission electron microscopy
 Abstract: 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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Language(s): eng - English
 Dates: 2014-12-162014-08-252015-05-132015-05-142015-12
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1016/j.ultramic.2015.05.012
 Degree: -

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Title: Ultramicroscopy
  Abbreviation : Ultramicroscopy
Source Genre: Journal
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Publ. Info: Amsterdam : Elsevier
Pages: 6 Volume / Issue: 159, Pt. 2 Sequence Number: - Start / End Page: 178 - 183 Identifier: ISSN: 0304-3991
CoNE: https://pure.mpg.de/cone/journals/resource/954925512451