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  Oxidation of Reduced Ceria by Incorporation of Hydrogen

Li, Z., Werner, K., Qian, K., You, R., Plucienik, A., Jia, A., et al. (2019). Oxidation of Reduced Ceria by Incorporation of Hydrogen. Angewandte Chemie International Edition, 58(41), 14686-14693. doi:10.1002/anie.201907117.

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Li_et_al-2019-Angewandte_Chemie_International_Edition.pdf (Verlagsversion), 3MB
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 Urheber:
Li, Zhaorui1, Autor
Werner, Kristin2, Autor           
Qian, Kun1, Autor
You, Rui1, Autor
Plucienik, Agata2, Autor           
Jia, Aiping1, 3, Autor
Wu, Lihui4, Autor
Zhang, Liyuan1, Autor
Pan, Haibin4, Autor
Kuhlenbeck, Helmut2, Autor           
Shaikhutdinov, Shamil K.2, Autor           
Huang, Weixin1, Autor
Freund, Hans-Joachim2, Autor           
Affiliations:
1Hefei National Laboratory for Physical Sciences at Microscale, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, CAS Key Laboratory of Materials for Energy Conversion and Department of Chemical Physics, University of Science and Technology of China, Hefei 230029, China, ou_persistent22              
2Chemical Physics, Fritz Haber Institute, Max Planck Society, ou_24022              
3Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Institute of Physical Chemistry Zhejiang Normal University, Jinhua, 321004, China, ou_persistent22              
4National Synchrotron Radiation Laboratory University of Science and Technology of China, Hefei 230029, China, ou_persistent22              

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 Zusammenfassung: The interaction of hydrogen with reduced ceria (CeO2‐x) powders and CeO2‐x(111) thin films was studied using several characterization techniques including TEM, XRD, LEED, XPS, RPES, EELS, ESR, and TDS. The results clearly indicate that both in reduced ceria powders as well as in reduced single crystal ceria films hydrogen may form hydroxyls at the surface and hydride species below the surface. The formation of hydrides is clearly linked to the presence of oxygen vacancies and is accompanied by the transfer of an electron from a Ce3+ species to hydrogen, which results in the formation of Ce4+, and thus in oxidation of ceria.

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Sprache(n): eng - English
 Datum: 2019-08-122019-10-07
 Publikationsstatus: Erschienen
 Seiten: 10
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1002/anie.201907117
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Titel: Angewandte Chemie International Edition
  Kurztitel : Angew. Chem. Int. Ed.
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Weinheim : Wiley-VCH
Seiten: - Band / Heft: 58 (41) Artikelnummer: - Start- / Endseite: 14686 - 14693 Identifikator: ISSN: 0570-0833
CoNE: https://pure.mpg.de/cone/journals/resource/0570-0833