Oxidation catalyst, its preparation and oxidation using the oxidation catalyst
AssigneeBASF SE
InventorsUlrich Muller, Peter Lingelbach, Peter Bassler, Wolfgang Harder, Karsten Eller, Veronika Kohl, Jurgen Dembowski, Norbert Rieber, Martin Fischer
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Abstract
In an oxidation catalyst based on a titanium or vanadium silicalite having a zeolite structure and containing from 0.01 to 20% by weight of one or more platinum metals selected from the group consisting of ruthenium, rhodium, palladium, osmium, iridium and platinum, the platinum metals are each present in at least two different bond energy states and preferably have no metal-metal bonds.
Claims10
A process for the preparation of epoxides from olefins, hydrogen and oxygen by reaction of the olefins in the presence of heterogeneous catalysts using an oxidation catalyst based on a titanium or vanadium silicalite having a zeolite structure and containing from 0.01 to 20% by weight of one or more platinum metals selected from the group consisting of ruthenium, rhodium palladium, osmium, iridium and platinum, wherein the platinum metals are each present in at least two different bond energy states not containing any effective metal-metal bonds.
An oxidation catalyst based on a titanium or vanadium silicalite having a zeolite structure and containing from 0.01 to 20% by weight of one or more platinum metals selected from the group consisting of ruthenium, rhodium palladium, osmium, iridium and platinum, the platinum metals each being present in at least two different bond energy states not containing any effective metal-metal bonds, wherein the titanium or vanadium silicalite has a pentasil zeolite structure assigned to the MFI, MEL or MFI/MEL mixed structure by X-ray analysis.
An oxidation catalyst based on a titanium or vanadium silicalite having a zeolite structure and containing from 0.01 to 20% by weight of palladium, the palladium being present in at least two different bond energy states, wherein virtually exclusively palladium-oxygen or palladiumnitrogen bond distances of 2.02.+-.0.02 .ANG. and no palladium-palladium distances of 2.74.+-.0.02 .ANG. and 3.04.+-.0.02 .ANG. occur.
Dependencies are inferred from the claim text.