Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
62593 | Journal of Catalysis | 2009 | 5 Pages |
Reaction pathways of propene in the selective propene epoxidation over Au/TiO2 are discussed on the basis of in-situ IR spectra. A non-selective route for conversion of propene via acrylate to carboxylates and carbonates is demonstrated, likely contributing to catalyst deactivation. Propoxy-groups are predominantly formed by reaction of the catalyst surface with the reaction product propene oxide (PO), and are highly stable under reaction conditions. These propoxy-groups are considered as deactivating species, and not as intermediates for the production of PO, or carboxylates and carbonates.
Graphical abstractAn additional route to deactivation of Au/TiO2 in the oxidation of propene is proposed.Figure optionsDownload full-size imageDownload high-quality image (25 K)Download as PowerPoint slide