Evonik Degussa Gmbh

Evonik Operations Gmbh

Sebastian Imm

Thomas Haas

Matthias Beller

Thomas Tacke

Jan Christoph Pfeffer

Andreas Martin

Matthias Pascaly

Angela Koeckritz

Florian Klasovsky

Jens Deutsch

Jürgen Stock

Bernd Jaeger

Hans-Jurgen Kohle

Holger Wiederhold

David Bolz

Hans-Jürgen Köhle

Angela Köckritz

Marina Lazar

Georg Friedrich Thiele

Juergen Haberland

Uwe Breitenbach

Jürgen Neuroth

Brigitte Mess

Jürgen Haberland

Joao André

Hans-Martin Rausch

The process for preparing 1,2-propanediol from propene and hydrogen peroxide comprises the steps of

Method for producing propylene glycol from propene and hydrogen peroxide

In the method for the epoxidation of an olefin, the olefin is continuously reacted with hydrogen peroxide in a mixed reactor in the presence of a water soluble epoxidation catalyst, comprising a manganese complex, the reaction is carried out in a reaction mixture comprising an aqueous liquid phase and an organic liquid phase with mixing of the liquid phases, reaction mixture is continuously withdrawn from the mixed reactor and separated into a separated aqueous phase and a separated organic phase, and part of the separated aqueous phase is continuously recycled into the mixed reactor, with the combined hold-up time of aqueous phase in withdrawing, separating phases and recycling aqueous phase being kept at less than 15 minutes.

Method for the epoxidation of an olefin with hydrogen peroxide

Epoxidation of an olefin is carried out by continuously reacting the olefin with hydrogen peroxide in the presence of a water soluble epoxidation catalyst, comprising a manganese complex, in a reaction mixture comprising an aqueous liquid phase and an organic liquid phase using a loop reactor with mixing of the liquid phases, and during the reaction the concentration of hydrogen peroxide in the aqueous liquid phase is maintained at less than 1.0% by weight.

The present invention relates to a chemocatalytic liquid-phase process for the direct one-stage amination of alcohols to primary amines by means of ammonia in high yields using a catalyst system containing at least one transition metal compound and a xantphos ligand.

Process for the direct amination of alcohols using ammonia to form primary amines by means of a xantphos catalyst system

The present invention relates to a process for preparing primary amines comprising the process steps

Process for homogeneously catalyzed, highly selective direct amination of primary alcohols with ammonia to primary amines with a high volume ratio of liquid phase to gas phase and/or high pressures

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Bad Vilbel, Germany

Sebastian Imm