Analysis of the IR-spectral behavior of adsorbed CO formed in H2 + CO2 surface interaction over supported rhodium
- Resource Type
- Authors
- Frigyes Solymosi; Monika Pásztor
- Source
- Journal of Catalysis. 104:312-322
- Subject
- chemistry.chemical_classification
Hydrogen
Hydride
Inorganic chemistry
chemistry.chemical_element
Infrared spectroscopy
Photochemistry
Catalysis
Rhodium
chemistry.chemical_compound
Adsorption
chemistry
Compounds of carbon
Physical and Theoretical Chemistry
Carbon monoxide
- Language
- ISSN
- 0021-9517
The interaction of hydrogen and carbon dioxide has been investigated by means of infrared spectroscopy on alumina-supported Rh of different crystallite sizes produced by reduction at 573–1173 K with a view to explaining the infrared spectrum of the adsorbed CO produced which is basically different from that observed following CO adsorption on the same samples. It appeared that the adsorbed CO formed on CO 2 or H 2 + CO 2 adsorption did not lead to the formation of gem -dicarbonyl, i.e., to disruption of the RhRh bond. This behavior is attributed to the presence of adsorbed hydrogen and to the formation of Rh carbonyl hydride, which prevents the disruptive effect of adsorbed CO.