Collect. Czech. Chem. Commun. 1988, 53, 743-748

IR study of water and 2-propanol adsorption on alumina

L. V. Malyshevaa, Vladimír Morávekb, E. A. Paukshtisa and E. N. Yurchenkoa

a Institute of Catalysis, Academy of Sciences of the U.S.S.R., 630 90 Novosibirsk, U.S.S.R.
b Institute of Chemical Process Fundamentals, Czechoslovak Academy of Sciences, 165 02 Prague 6-Suchdol, Czechoslovakia


The adsorption of water and 2-propanol on alumina has been studied by means of IR spectroscopy. Low temperature adsorption of CO has revealed that evolution of Lewis acid sites begins at 80 °C in vacuo when still about 40% of molecular water is present on the surface. The thermodesorption of water proceeds by recombination of neighbouring OH groups. The adsorption of 2-propanol increases the concentration of the nonisolated OH groups and decreases the concentration of isolated ones. The irreversible adsorption influences mostly the C-O and Cβ-H bonds in 2-propanol.