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  Understanding heterogeneous catalysis on an atomic scale: A combined surface science and reactivity investigation for the dehydrogenation of ethylbenzene over iron oxide catalysts

Kuhrs, C., Arita, Y., Weiss, W., Ranke, W., & Schlögl, R. (2000). Understanding heterogeneous catalysis on an atomic scale: A combined surface science and reactivity investigation for the dehydrogenation of ethylbenzene over iron oxide catalysts. Topics in Catalysis, 14(1-4), 111-123. doi:10.1023/A:1009067302464.

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FHIAC_KAW01_hetcat.pdf (Any fulltext), 803KB
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2000
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 Creators:
Kuhrs, Christian1, Author              
Arita, Yoshinobu1, Author              
Weiss, Werner1, Author              
Ranke, Wolfgang1, Author              
Schlögl, Robert1, Author              
Affiliations:
1Inorganic Chemistry, Fritz Haber Institute, Max Planck Society, ou_24023              

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Free keywords: 19: Iron oxide model catalysts: adsorption & catalysis
 Abstract: In order to study the dehydrogenation of ethylbenzene to styrene, epitaxial iron oxide model catalyst films with Fe3O4(111), a-Fe2O3(0001) and KFexOy(111) stoichiometry were prepared in single crystal quality on Pt(111). They were investigated using surface science techniques before and after atmospheric pressure reaction experiments in a newly designed single crystal flow reactor. As expected from low pressure measurements, Fe3O4(111) is catalytically inactive. The catalytic activity of a-Fe2O3(0001) starts after an activation period of about 45 minutes. After that, the surface is essentially clean but shows a high concentration of defects. On the potassium promoted films, however, the activation period is much longer, the activity then is higher and the surface gets covered completely with carbon and oxygen during reaction. This indicates a different reaction pathway on the promoted films with a carbon-oxygen species as catalytically active species

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Language(s): eng - English
 Dates: 2000-12
 Publication Status: Published in print
 Pages: 13
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: eDoc: 1211
DOI: 10.1023/A:1009067302464
 Degree: -

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Title: Topics in Catalysis
  Other : Top. Catal.
Source Genre: Journal
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Publ. Info: New York : Springer
Pages: 13 Volume / Issue: 14 (1-4) Sequence Number: - Start / End Page: 111 - 123 Identifier: ISSN: 1022-5528
CoNE: https://pure.mpg.de/cone/journals/resource/954925584249