Volume 52, 1971

Acidic and basic properties of hydroxylated metal oxide surfaces

Abstract

Hydroxyl groups on the surface of metal oxides are amphoteric in character. From experiments with anatase, rutile, η-alumina, α-Fe2O3,CeO2, and SnO2, half the OH groups are acidic in character, the other half are mainly basic and may be exchanged for other anions. This behaviour is explained by the structure of the hydroxylated surface. Acidity and basicity depend on the nature of the oxide. Several reactions are described for the determination of total OH content as well as the quantities of acidic and basic OH groups.

Article information

Article type
Paper

Discuss. Faraday Soc., 1971,52, 264-275

Acidic and basic properties of hydroxylated metal oxide surfaces

H. P. Boehm, Discuss. Faraday Soc., 1971, 52, 264 DOI: 10.1039/DF9715200264

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