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  Oscillatory combustion of propene during in situ mechanical activation of solid catalysts

Schreyer, H., Immohr, S., & Schüth, F. (2017). Oscillatory combustion of propene during in situ mechanical activation of solid catalysts. Journal of Materials Science, 52(20), 12021-12030. doi:10.1007/s10853-017-1153-z.

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 Creators:
Schreyer, Hannah1, Author           
Immohr, Sarah1, 2, Author           
Schüth, Ferdi1, Author           
Affiliations:
1Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445589              
2Sasol Germany GmbH, Marl, Germany, ou_persistent22              

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 Abstract: Mechanochemical activation of solids can lead to a strong increase in their activity as catalysts in heterogeneously catalyzed reactions. In the following, we report on the effects of solid catalyst activation during ball milling that lead to oscillatory behavior in CO and CO2 formation during propene oxidation. The oscillations arise under in situ ball milling conditions over chromium(III) oxide (Cr2O3) and cerium(IV) oxide (CeO2), respectively. The experiments were conducted under continuous gas flow at ambient pressure and temperature, using both a modified steel and a tungsten carbide milling vessel. Abrasion of particles from the steel milling vessel could be eliminated as the sole cause for the oscillations through substitution by a tungsten carbide milling vessel. The intensity and frequency of oscillations are shown to be dependent on the propene-to-oxygen ratio, the milling frequency, milling ball size and metal oxide used. Overall, Cr2O3 shows higher activity for oscillatory propene combustion under in situ mechanical activation than CeO2.

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Language(s): eng - English
 Dates: 2017-05-122017-10-01
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1007/s10853-017-1153-z
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Title: Journal of Materials Science
  Abbreviation : JMS
Source Genre: Journal
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Publ. Info: New York, NY, USA : Springer
Pages: - Volume / Issue: 52 (20) Sequence Number: - Start / End Page: 12021 - 12030 Identifier: ISSN: 0022-2461
CoNE: https://pure.mpg.de/cone/journals/resource/954925415936_1