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  4. Oxidative Fluorination of Cu/ZnO Methanol Catalysts
 
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2019
Journal Article
Titel

Oxidative Fluorination of Cu/ZnO Methanol Catalysts

Abstract
The influence of a mild difluorine treatment on Cu/ZnO precatalysts for methanol synthesis was investigated. It led to the incorporation of 1.2EL1.3±0.1 wt % fluoride into the material. Fluorination considerably increased the amount of ZnOx related defect sites on the catalysts and significantly increased the space‐time yields. Although the apparent activation energy EA,app for methanol formation from CO2 and H2 was almost unchanged, the EA,app for the reverse water‐gas shift (rWGS) reaction increased considerably. Overall, fluorination led to a significant gain in methanol selectivity and productivity. Apparently, also the quantity of active sites increased.
Author(s)
Dybbert, V.
Fehr, S.M.
Klein, F.
Schaadt, A.
Hoffmann, A.
Frei, E.
Erdem, E.
Ludwig, T.
Hillebrecht, H.
Krossing, I.
Zeitschrift
Angewandte Chemie. International edition
Thumbnail Image
DOI
10.1002/anie.201811267
Language
English
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Fraunhofer-Institut für Solare Energiesysteme ISE
Tags
  • Wasserstofftechnologie und elektrischer Energiespeicher

  • thermochemischer Prozess

  • Methanolsynthese

  • Katalysator

  • Fluorodierung

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