CATALYTIC CONVERSION OF ETHYLENE TO PROPYLENE OVER MCM-41
Abstract
The conversion of ethylene to propylene on MCM-41 and that doped with Ni, the latter of which was prepared using various procedures, is described. Undoped MCM-41 showed no activity for the conversion of ethylene to propylene. The catalytic activity for the conversion of ethylene to propylene on Ni-doped MCM-41 was strongly dependent on the preparation procedure of the catalyst and the reaction conditions. It was found that template ion-exchange procedure using organic base was suitable for the preparation of Ni-doped MCM-41, while the catalysts thus prepared was suffered from carbon deposition during the conversion of ethylene. However the introduction of water into the reactant gas and the slower introduction of the reactant gas into the catalysts resulted in the enhancement of the catalytic activity and stability.
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