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

Datensatz

DATENSATZ AKTIONENEXPORT

Freigegeben

Zeitschriftenartikel

Hybrid sol–gel double metal cyanide catalysts for the copolymerisation of styrene oxide and CO2

MPG-Autoren
http://pubman.mpdl.mpg.de/cone/persons/resource/persons58749

Leitner,  Walter
Institut für Technische und Makromolekulare Chemie, RWTH Aachen University;
Service Department Leitner (Technical Labs), Max-Planck-Institut für Kohlenforschung, Max Planck Society;

Weirich,  Thomas E.
Service Department Leitner (Technical Labs), Max-Planck-Institut für Kohlenforschung, Max Planck Society;
Gemeinschaftslabor für Elektronenmikroskopie (GFE), RWTH Aachen University;

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

c2gc16485j.pdf
(Ergänzendes Material), 134KB

Zitation

Dienes, Y., Leitner, W., Müller, M. G. J., Offermans, W. K., Reier, T., Reinholdt, A., et al. (2012). Hybrid sol–gel double metal cyanide catalysts for the copolymerisation of styrene oxide and CO2. Green Chemistry, 14(4), 1168-1177. doi:10.1039/c2gc16485j.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-0014-A28F-A
Zusammenfassung
Hybrid sol–gel catalysts of zinc hexacyanocobaltate and SiO2 were prepared by co-precipitation of the double metal cyanide with silica. Hybrid catalysts prepared at moderately acidic conditions showed the best performance with respect to activity, selectivity and stability. The hybrid sol–gel materials displayed high catalytic activity for the copolymerisation of styrene oxide and carbon dioxide (up to 650 molSO (molZn h)−1) and high productivity (575 gPolymer gCatalyst −1). They also displayed good selectivity to the polymeric product (80–87%), while only little cyclic styrene carbonate was formed as side product. A detailed electron microscopy study of the hybrid sol–gel materials showed that the active phase consisted of thin platelets containing the metals in a molar ratio nZn/nCo = 2.1, whereby the double metal cyanide was closely associated with silica.