Abstract
The electron–acceptor properties and the hydroxyl cover of the surface of a secondary support, γ-Al2O3 deposited on highly porous permeable cellular materials of corundum and Nichrome, were studied. The effect of lanthana additives on the acid–base properties of the surface of this support was also studied. The surface properties of the secondary support are typical of γ-Al2O3. The type of highly permeable porous cellular materials used and the modifying additives influence both the acidity of hydroxyl groups and the strength and concentration of electron-acceptor sites.
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