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EnglishChemoselective hydrogenation Of unsaturated carbonyl compounds over Groups 8 and 9 titania-supported metal catalysts was investigated in a pulse reactor. It is shown that when a conjugated aldehyde such as crotonaldehyde is hydrogenated, a high temperature reduction enchances the selectivity of the iridium and ruthenium catalysts in the formation of the unsaturated alcohol, which suggests that decoration of metal particles by titania sub-oxides generates new catalytic sites selective for carbonyl group hydrogenation. However, such behaviour is not observed for the unsaturated ketones.
| Titolo: | CHEMOSELECTIVE HYDROGENATION OF UNSATURATED CARBONYL-COMPOUNDS OVER GROUP-8 AND GROUP-9 TITANIA-SUPPORTED METAL-CATALYSTS |
| Autori: | |
| Data di pubblicazione: | 1992 |
| Rivista: | |
| Abstract: | Chemoselective hydrogenation Of unsaturated carbonyl compounds over Groups 8 and 9 titania-supported metal catalysts was investigated in a pulse reactor. It is shown that when a conjugated aldehyde such as crotonaldehyde is hydrogenated, a high temperature reduction enchances the selectivity of the iridium and ruthenium catalysts in the formation of the unsaturated alcohol, which suggests that decoration of metal particles by titania sub-oxides generates new catalytic sites selective for carbonyl group hydrogenation. However, such behaviour is not observed for the unsaturated ketones. |
| Handle: | http://hdl.handle.net/11390/680174 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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