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  CO Oxidation Over Monolayer Manganese Oxide Films on Pt(111)

Martynova, Y., Soldemo, M., Weissenrieder, J., Sachert, S., Polzin, S., Widdra, W., et al. (2013). CO Oxidation Over Monolayer Manganese Oxide Films on Pt(111). Catalysis Letters, 143(11), 1108-1115. doi:10.1007/s10562-013-1117-0.

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 Creators:
Martynova, Yulia1, Author           
Soldemo, M.2, Author
Weissenrieder, J.2, Author
Sachert, S.3, Author
Polzin, S.3, Author
Widdra, W.3, 4, Author
Shaikhutdinov, Shamil K.1, Author           
Freund, Hans-Joachim1, Author           
Affiliations:
1Chemical Physics, Fritz Haber Institute, Max Planck Society, ou_24022              
2Material Physics, KTH Royal Institute of Technology, 16440, Kista, Sweden, ou_persistent22              
3Institute of Physics, Martin-Luther-Universität , Halle-Wittenberg, 06120, Halle, Germany, ou_persistent22              
4Max-Planck-Institut für Mikrostrukturphysik, 06120, Halle, Germany, ou_persistent22              

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Free keywords: Ultrathin oxide films Manganese oxide CO oxidation
 Abstract: Ultrathin manganese oxide films grown on Pt(111) were examined in the low temperature CO oxidation reaction at near atmospheric pressures. Structural characterization was performed by X-ray photoelectron spectroscopy, Auger electron spectroscopy, high-resolution electron energy loss spectroscopy, and temperature programmed desorption. The results show that the reactivity of MnOsub>x</sub> ultrathin films is governed by a weakly bonded oxygen species, which may even be formed at low oxygen pressures (~10−6 mbar). For stable catalytic performance at realistic conditions the films required highly oxidizing conditions (CO:Osub>2</sub> < 1:10), otherwise the films dewetted, ultimately resulting in the catalyst deactivation. Comparison with other thin films on Pt(111) shows, that the desorption temperature of weakly bonded oxygen species can be used as a benchmark for its activity in this reaction.

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Language(s): eng - English
 Dates: 2013-08-142013-09-222013-10-122013-11
 Publication Status: Published in print
 Pages: 8
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1007/s10562-013-1117-0
 Degree: -

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Title: Catalysis Letters
Source Genre: Journal
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Publ. Info: New York : Springer
Pages: - Volume / Issue: 143 (11) Sequence Number: - Start / End Page: 1108 - 1115 Identifier: ISSN: 1011-372X
CoNE: https://pure.mpg.de/cone/journals/resource/954925586300