Dehydroxylation of alumina at an activation temperature (Tac) >673 K gives rise to a band in the 1020–1050 cm–1 frequency range whose wavenumber and intensity increase with increasing Tac and which is sensitive to 16O →18O exchange and disappears on adsorption of water or bases; it can be assigned to surface vibrational modes of alumina.
J. Lavalley and M. Benaissa, J. Chem. Soc., Chem. Commun., 1984, 908 DOI: 10.1039/C39840000908
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