Evonik Degussa Gmbh

Evonik Operations Gmbh

Jürgen Stock

Hans Joachim Hasselbach

Matthias Pascaly

Holger Wiederhold

Ron Postma

Prasad Muppa

Stefan Bernhardt

Martin Körfer

Jörg Schallenberg

Horst Krull

Sebastian Imm

Bart Van Den Berg

Jignesh Gangadwala

Hans Rausch

Franz H Hanrath

Joao André

Uwe Breitenbach

Jürgen Neuroth

Brigitte Mess

Hans-Martin Rausch

Christof P GRÜNER

Bart B Van Den Berg

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an aqueous liquid phase and an organic liquid phase with mixing of the liquid phases, reaction mixture is continuously withdrawn from the mixed reactor and separated into a separated aqueous phase and a separated organic phase, and part of the separated aqueous phase is continuously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.

Apparatus and processes are provided for forming epoxide compounds. In one embodiment, a process for the manufacture of an epoxide is provided including adding an oxidant, a water-soluble manganese complex and a terminal olefin to form a multiphasic reaction mixture, reacting the terminal olefin with the oxidant in the multiphasic reaction mixture having at least one organic phase in the presence of the water-soluble manganese complex, separating the reaction mixture into the at least one organic phase and an aqueous phase, and reusing at least part of the aqueous phase. The invention is also related to a device for performing the above process.

Process for the manufacture of a 1,2-epoxide and a device for carrying out said process

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Frankfurt-am-Main, Germany

Jürgen Stock