Abstract
The effects of submonolayer deposits of titania on the hydrogenation of CO2, acetone, and CO on a Rh foil have been investigated. Titania has been found to promote all three of the hydrogenation reactions, with each reaction exhibiting a maximum rate at a titania coverage of 0.5 ML. The maximum rate for CO2 hydrogenation is 15 times that of the bare Rh surface. Acetone hydrogenation shows a 6-fold rate enhancement, while CO displays a 3-fold increase. Changes in the selectivities for each reaction are also observed upon titania promotion. The effects of titania on these reactions are attributed to an interaction between C-O bonds and Ti3+ ions located at the perimeter of titania islands.
Original language | English |
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Pages (from-to) | 385-394 |
Number of pages | 10 |
Journal | Catalysis Letters |
Volume | 5 |
Issue number | 4-6 |
DOIs | |
Publication status | Published - Jul 1990 |
MoE publication type | A1 Journal article-refereed |
Keywords
- acetone hydrogenation
- CO hydrogenation
- Titania promoted rhodium