The IR spectrum of carbon monoxide, adsorbed on a dehydrated surface ofγ-aluminum oxide under various conditions, was studied in the region of 4000–1000 cm−1.
Within the interval 20–450°C, several surface compounds were detected: the formate structure, ionized carbonate, monodentately and bidentately coordinated carbonate structures, and bicarbonate.
The hydroxyl groups of the surface take part in the adsorption of carbon monoxide, particularly in the formation of formate and bicarbonate structures.
The conversion of carbon monoxide to carbon dioxide was detected spectrally; a hypothesis was advanced on the participation of formate and bicarbonate surface compounds in the oxidation of CO to CO2.
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Yakerson, V.I., Lafer, L.I., Danyushevskii, V.Y. et al. Infrared spectra of catalysts and adsorbed molecules. Russ Chem Bull 18, 21–28 (1969). https://doi.org/10.1007/BF00907588
- Carbon Dioxide
- Carbon Monoxide