Infrared spectroscopy study of adsorption and coadsorption of carbon monoxide and hydrogen on Ru/Al203

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作者：
Silvia Zh. Todorova
Georgi B. Kadinov
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来源：
Research on Chemical Intermediates | 2002年 / 28卷
关键词：
CO ADSORPTION; CO HYDROGENATION; RUTHENIUM CATALYSTS; IR SPECTROSCOPY; HYDROCARBONYL SPECIES;
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摘要：
IR spectroscopy was used to study CO adsorption and coadsorption with H2 on 5% Ru/Al2O3. By variation of sample pretreatment, CO pressures, contact time and temperature several surface species were identified: mono– and multicarbonyl species formed with ruthenium in different oxidation state and on various sites of the catalyst surface. During CO and H2 coadsorption and interaction, a new band at 2030 cm–1 was registered. It was assigned to a 'hydrocarbonyl' species on the metal particles. Thermal stability of some CO species was studied. Most stable and least reactive species was found to be a multicarbonyl giving rise to bands at 1980 and 2060 cm–1.
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页码：291 / 301
页数：10
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