Method for producing diphenylcarbonate having catalyst comprising ionic fluids
AssigneeBayer Technology Services GmbH
InventorsAlexandra Groβe Böwing, Aurel Wolf, Kilian Tellmann, Leslaw Mleczko
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Abstract
The invention relates to a method for producing diphenylcarbonate while using a catalyst composition comprising ionic fluids.
Claims11
A catalyst composition for preparing diphenyl carbonate which comprises an ionic liquid, wherein the ionic liquid is 1-butyl-3-methylpyrrolidinium trifluoroacetate, 1-butyl-3-methylimidazolium hexafluorophosphate or a mixture thereof and wherein the catalyst composition further comprises a palladium salt, a manganese salt and a base.
A process for preparing diphenyl carbonate from a reaction mixture comprising phenol, carbon monoxide and also oxygen and optionally diphenyl carbonate in a reaction zone, wherein the reaction mixture in the reaction zone is passed through a catalyst composition containing an ionic liquid which is 1-butyl-3-methylpyrrolidinium trifluoroacetate or 1-butyl-3-methylimidazolium hexafluorophosphate or a mixture thereof, a palladium salt, a manganese salt and a base.
Dependencies are inferred from the claim text.