Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10244444 | Journal of Catalysis | 2005 | 11 Pages |
Abstract
A reaction model was developed for the epoxidation of propene oxide over gold-titania catalysts. This model involves the formation of a bidentate propoxy species on titania after the adsorption of propene, which is activated by gold. Aided by a peroxide species produced from hydrogen and oxygen on a gold nanoparticle, this species can reactively desorb from the catalyst to produce propene oxide. A reversible catalyst deactivation occurs by a consecutive oxidation of the bidentate propoxy species to carbonate species. The kinetic model is able to give a good description of the experimentally observed catalytic performance in the low-temperature range (up to 365 K), where the selectivity of the catalyst is high.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Catalysis
Authors
T. Alexander Nijhuis, Tracy Q. Gardner, Bert M. Weckhuysen,