J. Chim. Phys.
Volume 72, 1975
|Page(s)||5 - 8|
|Published online||29 May 2017|
Effect of promoters in the dehydrogenation of ethylbenzene on iron oxide catalysts in presence of steam
Hydro-Quebec Institute of Research, Varennes, PQ, Canada, France.
The oxides of alkali and alkaline earth metals are known to exhibit a strong promoter effect in the dehydrogenation of ethylbenzene (EB) on iron catalysts in presence of steam. The promoter effect manifests itself in two ways : (1) it influences the total rate of dehydrogenation ; (2) it determines the extent of selectivity shown by the catalyst for styrene formation. The magnitude of the promoter effect is different for different metal oxides and an electrostatic model is proposed here to correlate this magnitude with the ionicity of the promoting oxides.
© Paris : Société de Chimie Physique, 1975