Catalysis Letters

, Volume 73, Issue 2, pp 157-160

First online:

Highly selective propene epoxidation with hydrogen/oxygen mixtures over titania-supported silver catalysts

  • Armin Lange de OliveiraAffiliated withMax-Planck-Institut für Kohlenforschung
  • , Anke WolfAffiliated withMax-Planck-Institut für Kohlenforschung
  • , Ferdi SchüthAffiliated withMax-Planck-Institut für Kohlenforschung

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Silver supported on titania was found to be active for propene epoxidation using hydrogen/oxygen mixtures at 50 °C. The dependence of the activity on the preparative method is pronounced, i.e., only catalysts prepared by using deposition–precipitation exhibit activity. Optimum performance was found for 2 wt% Ag/TiO2 calcined at 400 °C. The propene epoxidation activity, the activity in the low-temperature CO oxidation, in propane oxidation and deactivation behavior of these silver catalysts strongly resemble the results obtained for the Au/TiO2 catalysts developed by Haruta.

propene oxide alkylene oxides CO oxidation epoxidation silver titania