The chemisorption of carbon monoxide on various transition aluminas

Carbon monoxide chemisorption was investigated at 36 °C on four transition aluminas (η, γ, θ, Alon C) by means of microcalorimetry and infrared spectroscopy. On all the aluminas coverages are fairly low, and the interaction only involves a coordination to surface cations. There is evidence for two f...

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Bibliographic Details
Published in:Journal of catalysis 1976-06, Vol.43 (1), p.90-98
Main Authors: Gatta, Giuseppe Della, Fubini, Bice, Ghiotti, Giovanna, Morterra, Claudio
Format: Article
Language:English
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Summary:Carbon monoxide chemisorption was investigated at 36 °C on four transition aluminas (η, γ, θ, Alon C) by means of microcalorimetry and infrared spectroscopy. On all the aluminas coverages are fairly low, and the interaction only involves a coordination to surface cations. There is evidence for two families of admolecules, characterized by different stretching frequencies (Δ¯ v ∼ 30 cm −1) and adsorption heats (14 and 2 kcal/mole, respectively). The same species are found on all the aluminas although in different amounts. In particular the remarkable differences observed between η-alumina and γ-alumina seem to parallel their different catalytic activity.
ISSN:0021-9517
1090-2694
DOI:10.1016/0021-9517(76)90296-7