The Effects of Potassium on Carbon Monoxide Methanation Over Supported Rhodium Films.
AUCKLAND UNIV (NEW ZEALAND) DEPT OF CHEMISTRY
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The reaction of hydrogen with carbon monoxide over RhAl2O3 and RhTiO2 catalytic films, some of which contained potassium as an additive, has been investigated. The presence of potassium caused the usual gem dicarbonyl and linear CO species on supported rhodium to dissociate at lower temperature than for catalysts containing no potassium. On the other hand, the bridged carbonyl species was significantly enhanced by the presence of potassium. The RhTiO2 films to which potassium was added catalyzed the production of significant amounts of acetone and acetaldehyde as oxigenated products. It is likely that the bridged carbonyl species is the precursor to oxygenated products.
- Organic Chemistry
- Atomic and Molecular Physics and Spectroscopy