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  Restructuring of silica supported vanadia during propane oxidative dehydrogenation studied by combined synchrotron radiation based in situ soft X-ray absorption and photoemission

Hävecker, M., Düngen, P., Buller, S., Knop-Gericke, A., Trunschke, A., & Schlögl, R. (2017). Restructuring of silica supported vanadia during propane oxidative dehydrogenation studied by combined synchrotron radiation based in situ soft X-ray absorption and photoemission. Catalysis, Structure and Reactivity, 3(1-2), 104-111. doi:10.1080/2055074X.2017.1287535.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0000-F594-4 Version Permalink: http://hdl.handle.net/21.11116/0000-0000-F5A6-0
Genre: Journal Article

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Restructuring of silica supported vanadia during propane oxidative dehydrogenation studied by combined synchrotron radiation based in situ soft X ray.pdf (Publisher version), 2MB
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2017
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 Creators:
Hävecker, Michael1, 2, Author              
Düngen, Pascal2, Author
Buller, Saskia2, Author
Knop-Gericke, Axel1, Author              
Trunschke, Annette1, Author              
Schlögl, Robert1, 2, Author              
Affiliations:
1Inorganic Chemistry, Fritz Haber Institute, Max Planck Society, escidoc:24023              
2Heterogeneous Reactions, Max-Planck-Institute for Chemical Energy Conversion , Stiftstr. 34 - 36 45470 Mülheim an der Ruhr, Germany, escidoc:persistent13              

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 Abstract: A series of vanadia catalysts supported on mesoporous silica SBA-15 has been prepared with a loading in the range of 2–14 wt-% V and characterized under oxygen and propane oxidative dehydrogenation reaction conditions at elevated temperature up to 550 °C. In situ soft X-ray absorption spectra at the vanadium L- and oxygen K-edges and in situ synchrotron based X-ray photoemission spectra reveal a restructuring of vanadium species that results in an enhanced degree of dispersion of molecular vanadia species on the silica support. The impact of the X-ray beam on the XAS spectra of dispersed VxOy species has been studied and a brief perspective of X-ray based electron spectroscopy as a probe in catalyst characterization is given.

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Language(s): eng - English
 Dates: 2016-10-302017-01-182017-03-03
 Publication Status: Published online
 Pages: 8
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1080/2055074X.2017.1287535
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Title: Catalysis, Structure and Reactivity
Source Genre: Journal
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Publ. Info: London : Taylor & Francis
Pages: 8 Volume / Issue: 3 (1-2) Sequence Number: - Start / End Page: 104 - 111 Identifier: ISSN: 2055-074X
CoNE: http://pubman.mpdl.mpg.de/cone/journals/resource/2055-074X