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Towards Physical Descriptors of Active and Selective Catalysts for the Oxidation of n-Butane to Maleic Anhydride

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http://pubman.mpdl.mpg.de/cone/persons/resource/persons21485

Eichelbaum,  Maik
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons21590

Hävecker,  Michael
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;
Helmholtz-Zentrum Berlin fuer Materialien und Energy GmbH, Division Solar Energy Research, Elektronenspeicherring BESSY II;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons32754

Heine,  Christian
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons22098

Schwarz,  Heiner
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons22181

Trunschke,  Annette
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons22071

Schlögl,  Robert
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Citation

Eichelbaum, M., Glaum, R., Hävecker, M., Wittich, K., Heine, C., Schwarz, H., et al. (2013). Towards Physical Descriptors of Active and Selective Catalysts for the Oxidation of n-Butane to Maleic Anhydride. ChemCatChem: heterogeneous & homogeneous & bio-catalysis, 5(8), 2318-2329. doi:10.1002/cctc.201200953.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0013-FB9D-1
Abstract
Based on our newly developed microwave cavity perturbation technique, the microwave conductivity of diverse vanadium(III), (IV), and (V) phosphate catalysts was measured under reaction conditions for the selective oxidation of n-butane. The conductivity response on the gas phase was identified as a very sensitive measure for the redox kinetics, reversibility, and stability of the samples, which are important prerequisites for highly selective and active catalysts. The sensitivity achieved by our method was comparable to surface-sensitive methods such as X-ray photoelectron spectroscopy, whereas more conventional analytic techniques such as X-ray diffractometry or Raman spectroscopy only indicated the stability of the bulk crystal phase under the same reaction conditions.