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  Activating a Cu/ZnO : Al Catalyst – Much More than Reduction: Decomposition, Self‐Doping and Polymorphism

Frei, E., Gaur, A., Lichtenberg, H., Heine, C., Friedrich, M., Greiner, M. T., et al. (2019). Activating a Cu/ZnO : Al Catalyst – Much More than Reduction: Decomposition, Self‐Doping and Polymorphism. ChemCatChem, 11(6), 1587-1592. doi:10.1002/cctc.201900069.

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Fwd_ Re_ Manuscript cctc.pdf (Copyright transfer agreement), 200KB
 
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 Creators:
Frei, Elias1, Author              
Gaur, Abhijeet2, Author
Lichtenberg, Henning2, Author
Heine, Christian1, Author              
Friedrich, Matthias1, Author              
Greiner, Mark T.3, Author
Lunkenbein, Thomas1, Author              
Grunwaldt, Jan‐Dierk2, Author
Schlögl, Robert1, 3, Author              
Affiliations:
1Inorganic Chemistry, Fritz Haber Institute, Max Planck Society, ou_24023              
2Karlsruher Institut für Technologie, ITCP and IKFT, Engesserstr. 20, 76131, Karlsruhe, Germany, ou_persistent22              
3Heterogeneous Reactions, Max-Planck-Institute for Chemical Energy Conversion , Stiftstr. 34 - 36 45470 Mülheim an der Ruhr, Germany, ou_persistent13              

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 Abstract: The activation of Cu/ZnO‐based catalysts before their application is a key step and sensitive process enabling the development of the entire catalytic potential. Here, we report on a complementary (soft and hard) in‐situ X‐ray absorption spectroscopy (XAS) study investigating in detail the changes of a Cu/ZnO : Al catalyst upon thermal treatment in reducing atmosphere (10 % H2) at ambient pressure. The spectroscopic features of Cu, Zn and Al are investigated. Beyond the reduction event of the Cu moieties, the role of high temperature carbonate and the Al‐dopant is discussed up to the consequences for the ZnO polymorphism. The stability of the observed effects and thus their catalytic relevance are validated by operando XAS under reverse water gas‐shift conditions.

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Language(s): eng - English
 Dates: 2019-01-112019-02-062019-03-22
 Publication Status: Published online
 Pages: 6
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1002/cctc.201900069
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Title: ChemCatChem
  Other : ChemCatChem
Source Genre: Journal
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Publ. Info: Weinheim : Wiley-VCH
Pages: 6 Volume / Issue: 11 (6) Sequence Number: - Start / End Page: 1587 - 1592 Identifier: ISSN: 1867-3880
CoNE: https://pure.mpg.de/cone/journals/resource/1867-3880