Fourier-transform infrared study of the oxidation of ethene on MoO3/TiO2 catalysts doped with alkali metals

Abstract

An FTIR spectroscopy study of the adsorption and oxidation of ethene on MoO₃/TiO₂ catalysts (undoped or doped with alkali-metal cations, Li, Na, K and Rb) has been carried out. The undoped catalyst is less active, although it shows a larger selectivity towards acetaldehyde formation. Reactive adsorption is observed, even at room temperature, on the catalyst containing lithium, leading to formation of acetate.