Improved Catalyst Bed Configuration for Olefin Production

摘要

A catalyst bed configuration, in particular for olefin conversion by metathesis, comprising at least one main catalyst bed comprising a) at least one first catalyst component comprising a metathesis catalyst, and b) at least one second catalyst component comprising a catalyst for double bond isomerisation, whereby the first and second catalyst are intimate mixed with each other, and at least one catalyst pre-bed arranged upstream of the at least one main catalyst bed comprising at least one compound selected from the group of alkaline earth oxides. The mass ratio of the at least one catalyst pre-bed to the at least one main catalyst bed is between 1:2 and 2.5:1, preferably between 1:1.5 and 2.5:1, more preferably between 1:1 and 2.5:1, most preferably between 1:1 and 2:1.

主权项

1. A catalyst bed configuration for conversion of olefins comprising
at least one main catalyst bed comprising a) at least one first catalyst component comprising a metathesis catalyst, and b) at least one second catalyst component comprising a catalyst for double bond isomerisation, whereby the first and second catalyst are intimate mixed with each other, and at least one catalyst pre-bed arranged upstream of the at least one main catalyst bed comprising at least one compound selected from the group of alkaline earth oxides, wherein the mass ratio of the at least one catalyst pre-bed and the at least one main catalyst bed is between 1:2 and 2.5:1, wherein a mass ratio of 1:1.6 of catalyst pre-bed and main catalyst bed in case of magnesium oxide as catalyst pre-bed and a mixture of magnesium oxide and tungsten oxide on a silica carrier in a ratio of 7:1 as main catalyst bed for the disproportion of pentene is disclaimed.