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  Subnanometer cobalt oxide clusters as selective low temperature oxidative dehydrogenation catalysts

Lee, S., Halder, A., Ferguson, G. A., Seifert, S., Winans, R. E., Teschner, D., et al. (2019). Subnanometer cobalt oxide clusters as selective low temperature oxidative dehydrogenation catalysts. Nature Communications, 10(1): 954. doi:10.1038/s41467-019-08819-5.

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 Creators:
Lee, Sungsik1, Author
Halder, Avik2, Author
Ferguson, Glen A.2, Author
Seifert, Sönke1, Author
Winans, Randall E.1, Author
Teschner, Detre3, 4, Author           
Schlögl, Robert3, 4, Author           
Papaefthimiou, Vasiliki5, Author
Greeley, Jeffrey6, Author
Curtiss, Larry A.2, Author
Vajda, Stefan2, 7, Author
Affiliations:
1X-ray Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, IL, 60439, USA, ou_persistent22              
2Materials Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, IL, 60439, USA, ou_persistent22              
3Inorganic Chemistry, Fritz Haber Institute, Max Planck Society, ou_24023              
4Heterogeneous Reactions, Max-Planck-Institute for Chemical Energy Conversion , Stiftstr. 34 - 36 45470 Mülheim an der Ruhr, Germany, ou_persistent13              
5ICPEES, Institut de Chimie et des Procédés pour l’Energie, l’Environnement et la Santé, University of Strasbourg, 25 rue Becquerel, 67087, Strasbourg, France, ou_persistent22              
6School of Chemical Engineering, Purdue University, 480W Stadium Mall Drive, West Lafayette, IN, 47907, USA, ou_persistent22              
7Institute for Molecular Engineering, University of Chicago, Eckhardt, 5640 South Ellis Avenue, Chicago, IL, 60637, USA, ou_persistent22              

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 Abstract: The discovery of more efficient, economical, and selective catalysts for oxidative dehydrogenation is of immense economic importance. However, the temperatures required for this reaction are typically high, often exceeding 400 °C. Herein, we report the discovery of subnanometer sized cobalt oxide clusters for oxidative dehydrogenation of cyclohexane that are active at lower temperatures than reported catalysts, while they can also eliminate the combustion channel. These results found for the two cluster sizes suggest other subnanometer size (CoO)x clusters will also be active at low temperatures. The high activity of the cobalt clusters can be understood on the basis of density functional studies that reveal highly active under-coordinated cobalt atoms in the clusters and show that the oxidized nature of the clusters substantially decreases the binding energy of the cyclohexene species which desorb from the cluster at low temperature.

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Language(s): eng - English
 Dates: 2018-03-142019-01-182019-02-27
 Publication Status: Published online
 Pages: 9
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1038/s41467-019-08819-5
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Title: Nature Communications
  Abbreviation : Nat. Commun.
Source Genre: Journal
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Publ. Info: London : Nature Publishing Group
Pages: 9 Volume / Issue: 10 (1) Sequence Number: 954 Start / End Page: - Identifier: ISSN: 2041-1723
CoNE: https://pure.mpg.de/cone/journals/resource/2041-1723