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  Probing a Redox Behavior of TiO2/SBA-15 Supported VxOy Catalyst Using an Electron Beam in a 200 kV Transmission Electron Microscope

Zhang, W., Zhang, B., Wolfram, T., Shao, L., Schlögl, R., & Su, D. S. (2011). Probing a Redox Behavior of TiO2/SBA-15 Supported VxOy Catalyst Using an Electron Beam in a 200 kV Transmission Electron Microscope. The Journal of Physical Chemistry C, 115(42), 20550-20554. doi:10.1021/jp2058645.

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 Urheber:
Zhang, Wei1, Autor           
Zhang, Bingsen1, Autor           
Wolfram, Till1, Autor           
Shao, Lidong1, Autor           
Schlögl, Robert1, Autor           
Su, Dang Sheng1, 2, Autor           
Affiliations:
1Inorganic Chemistry, Fritz Haber Institute, Max Planck Society, ou_24023              
2Shenyang National Laboratory for Materials Science Institute of Metal Research, Chinese Academy of Science, ou_persistent22              

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 Zusammenfassung: Supported vanadium oxides are becoming the model catalysts for numerous selective oxidation reactions. To exploit redox chemistry of well-known titania-supported vanadia is currently one of the most fascinating topics. Herein, by applying in situ electron energy-loss spectroscopy, we succeeded in stimulating a new redox reaction in a routine transmission electron microscope; the electron beam can boost further oxidation from an amorphous lower-oxidation-state vanadia to maximal V2O5 with an expense of oxygen from its support of TiO2 to be reduced. Our findings could be extended into a new strategy: through utilizing an electron beam, and probing the redox chemistry between catalysts and their support in a wide class of heterogeneous catalyst systems, such as various oxide/oxide, metal/oxide, and oxide/metal catalysts.

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Sprache(n): eng - English
 Datum: 2011-10-032011-10-27
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1021/jp2058645
 Art des Abschluß: -

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Titel: The Journal of Physical Chemistry C
  Andere : J. Phys. Chem. C
Genre der Quelle: Zeitschrift
 Urheber:
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Ort, Verlag, Ausgabe: Washington DC : American Chemical Society
Seiten: - Band / Heft: 115 (42) Artikelnummer: - Start- / Endseite: 20550 - 20554 Identifikator: ISSN: 1932-7447
CoNE: https://pure.mpg.de/cone/journals/resource/954926947766