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Dehydration of Alcohols on Aluminum Oxide

1968; Wiley; Volume: 7; Issue: 10 Linguagem: Inglês

10.1002/anie.196807911

1521-3773

Helmut Knözinger,

Adsorption and biosorption for pollutant removal

Abstract The dehydration of alcohols on γ‐aluminum oxide, which yields water, olefins, and/or ethers, was studied with the aid of kinetic methods and IR spectroscopy. The unimolecular olefin formation probably proceeds via a surface compound, in which an alcohol molecule is joined by two angular H‐bonds to an OH group and an oxygen ion on the surface. The ether formation (bimolecular reaction), on the other hand, requires OH groups and oxygen and aluminum ions on the surface. The ether is formed from a surface alkoxide group and molecularly adsorbed alcohol.