de.mpg.escidoc.pubman.appbase.FacesBean
Deutsch
 
Hilfe Wegweiser Impressum Kontakt Einloggen
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT

Freigegeben

Zeitschriftenartikel

Comparison of oxidizing agents for the oxidative coupling of methane over state-of-the-art catalysts

MPG-Autoren
http://pubman.mpdl.mpg.de/cone/persons/resource/persons21519

Frank,  Benjamin
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons22227

Weinberg,  Gisela
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

Externe Ressourcen
Es sind keine Externen Ressourcen verfügbar
Volltexte (frei zugänglich)

1400674.pdf
(beliebiger Volltext), 968KB

Ergänzendes Material (frei zugänglich)
Es sind keine frei zugänglichen Ergänzenden Materialien verfügbar
Zitation

Langfeld, K., Frank, B., Strempel, V. A., Berger-Karin, C., Weinberg, G., Kondratenko, E. V., et al. (2012). Comparison of oxidizing agents for the oxidative coupling of methane over state-of-the-art catalysts. Applied Catalysis A: General, 417-418, 145-152. doi:10.1016/j.apcata.2011.12.035.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-000F-4D64-9
Zusammenfassung
The synthesis of selected state-of-the-art catalysts providing high performances in the oxidative coupling of methane (OCM) with O2 was reproduced according to the respective recipes reported in literature. A reference material with identical stoichiometric composition was further synthesized by applying the cellulose templating method. This method increases the surface area and affects the phase composition and crystallite size of the catalysts as determined by N2-physisoprtion, X-ray diffraction and scanning electron microscopy. This, however, is in most cases detrimental to the catalytic OCM performance due to enhanced global activity resulting in hot spots in the catalyst bed. Catalysts were tested in the OCM under variation of temperature (973–1073 K), GHSV (3600–100,000 h−1) and oxidizing agent (O2 and N2O). In general, conversions of CH4 when using N2O are lower than in the presence of O2, however, the selectivities to C2 products ethane and ethylene are higher even at a similar level of CH4 conversion. This confirms the presence of different oxygen species formed by activation of these oxidizing agents.