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AssigneeDegussa AG
InventorsJuergen Herwig, Martin Roos, Georg Oenbrink, Bernd Guenzel, Joerg Lohmar
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Settling times of a catalyst in the epoxidation of a cyclic, at least monounsaturated alkene are improved by a method, comprising epoxidizing a cyclic, at least monounsaturated alkene having from 8 to 20 carbon atoms in the ring in a reaction medium containing an oxidant and a catalyst system comprising at least one metal of Groups 4, 5 and 6 of the Periodic Table of the Elements, phosphoric acid and a phase transfer catalyst and a cyclic alkane having from 8 to 20 carbon atoms in the ring, which corresponds to the alkene reactant, as settling accelerator in the epoxidation reaction.
A method of improving settling times of catalyst in the epoxidation of a cyclic, at least monounsaturated alkene, comprising:
The process as claimed in claim 13, wherein the catalyst is molybdenum, tungsten, chromium, vanadium or titanium metal, Mo(CO)6, W(CO)6, MoO2, Mo2O5, Mo2O3, MoO3, WO2, W2O5, WO6, CrO2, Cr2O3, CrO3, VO2, V2O5, ZrO2, TiO, TiO2, Ti2O3, NbO2, Nb2O3, Nb2O5, MoS2, MoS3, MoS4, Mo2S3, Mo2S5, an oxychloride of molybdenum, tungsten, chromium, vanadium, zirconium, titanium;
Dependencies are inferred from the claim text.