Résumé
A new ethylene to propylene catalytic process based on cascade reactions, with two catalysts and two reactors,has been explored in this study. In the first reactor loaded with Ni-AlKIT-6 catalyst, at 60–120 °C and 3 MPa, partof ethylene has been selectively transformed into 2-butene. In the second reactor, loaded with WOx/KIT-6catalyst, 2-butene reacted with the unconverted ethylene at 450 °C and 0.1 MPa. Unprecedented results in termsof catalytic activity, selectivity towards the formation of propylene and stability against deactivation wereachieved under these conditions. More precisely, an ethylene conversion of ~85% and a selectivity to propyleneof 55% and butenes of 30% remained unchanged during 24 h on reaction stream.