Abstract
The kind of surface MoOX structures on Al2O3-SiO2 was found to determine propene selectivity in the metathesis of ethylene and 2-butene. Compared to isolated tetrahedral MoOX species, their polymerized octahedral counterparts show significantly lower activity for isomerisation of 2- to 1-butene thus hindering non-selective metathesis of these butenes. In addition, they reveal higher ability to engage ethylene in propene formation.
Highlights
The effect of supported MoOx structures on the reaction pathways of propene formation in the metathesis of ethylene and 2-butene
Linke reveal the importance of the kind of supported MoOx structures for forming propene with high selectivity in the metathesis of ethylene and 2-butene
To accommodate the propene demand, the metathesis of ethylene and 2-butene to propene over a WOX/SiO2 catalyst has been commercialized.[2,3,4]. The selectivity of this process is hampered by the co-production of pentenes through metathesis of 1- and 2-butenes.5 1-Butene may either be introduced as part of the feed, which is typically derived from the C4-cut of a steam cracker, or may be formed via 2- to 1-butene isomerisation over the metathesis catalyst
Summary
The effect of supported MoOx structures on the reaction pathways of propene formation in the metathesis of ethylene and 2-butene. Linke reveal the importance of the kind of supported MoOx structures for forming propene with high selectivity in the metathesis of ethylene and 2-butene. The effect of supported MoOX structures on the reaction pathways of propene formation in the metathesis of ethylene and 2-butene†
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