Evonik Operations Gmbh

Evonik Degussa Gmbh

Evonik Oxeno Gmbh & Co. Kg

Peter Kucmierczyk

Robert Franke

Dirk Fridag

Johannes Knossalla

Matthias Beller

Ralf Jackstell

Ana Markovic

Marc Schäpertöns

Ricarda Dühren

Detlef Selent

Armin Matthias Rix

Alexander Brächer

Anna Chiara Sale

Kaiwu Dong

Rui Sang

Frederik Gluth

Armin Börner

Jens Holz

Kerstin Romeike

Christoph Kubis

Amin Borner

Gudrun Wenzel

Maren Termühlen

Annika Reinhardt

Kalwu Dong

Rui Lui Sang

The invention relates to a process for separating one or more components from a mixture by a membrane separation in which—depending on the component to be separated—an acid or a base is added to the mixture before the membrane separation.

Process for separating one or more components from a mixture

Process for alkoxycarbonylation of ethylenically unsaturated compounds using benzene-based diphosphine ligands and aluminium triflate.

Process for alkoxycarbonylation of ethylenically unsaturated compounds using benzene-based diphosphine ligands and aluminium triflate

A process for preparing Caldehydes involves hydroformylation of butenes with synthesis gas in the presence of a homogeneous catalyst system and a solvent. It is a feature of the process that the aldehyde concentration in the reaction mixture is limited.

Process for preparing Caldehydes

A process can be used for preparing aldehydes from C2 to C20 olefins with a subsequent thermal separation for removal of the aldehyde formed. The process involves a membrane separation, which is preceded by performance of a gas exchange by which the proportion of the partial pressure represented by carbon monoxide or hydrogen is increased in order to reduce catalyst losses.

Optimized thermal separation by prior gas exchange

Ru-catalysed domino hydroformylation/hydrogenation/esterification using phosphine ligands.

Ru-catalyzed domino hydroformylation/hydrogenation/esterification using phosphine ligands

Bisphosphite ligands based on benzopinacol with an open outer unit, and the use thereof in hydroformylation.

Bisphosphite ligands based on benzopinacol with an open outer unit

Bisphosphite ligands based on benzopinacol, and the use thereof in hydroformylation.

Bisphosphite ligands based on benzopinacol

Diphosphites having an open, 3-methylated outer unit and use thereof in hydroformylation.

Diphosphites with an open, 3-methylated outer unit

Mixture of bisphosphites having an open and a closed outer unit and the use thereof as a catalyst mixture in hydroformylation.

Mixture of bisphosphites having an open and a closed outer unit and the use thereof as a catalyst mixture in hydroformylation

Diphosphites having an open and a closed 2,4-methylated outer unit and use thereof in hydroformylation.

Diphosphites having an open and a closed 2,4-methylated outer unit

Ru-catalysed domino hydroformylation/hydrogenation/esterification using imidazole ligands.

Ru-catalysed domino hydroformylation / hydrogenation / esterification using imidazole ligands

The invention provides a process for preparing an alcohol by hydrogenating an ester which is obtained by alkoxycarbonylating a C2 to C20 hydrocarbon having at least one multiple bond, preferably having at least one olefinic double bond, in which the homogeneous catalyst system used is separated from the product mixture by means of membrane separation. In a development of the present invention, the ester thus formed is converted to another ester by transesterification and then hydrogenated.

Process for preparing an alcohol from hydrocarbons

The present invention provides a process for preparing aldehydes from C2 to C20 olefins using a subsequent membrane separation to separate the homogeneously dissolved catalyst system, wherein prior to the membrane separation a gas exchange that increases the partial pressure fraction of carbon monoxide or hydrogen is carried out in order to boost catalyst retention by the membrane.

Process for preparing aldehydes and separation of the catalyst system by membrane separation

The invention relates to a process for preparing an ester by alkoxycarbonylation of a C2 to C20 hydrocarbon having at least one multiple bond, preferably having at least one olefinic double bond, in which the homogeneous catalyst system used is separated from the product mixture by means of membrane separation and recycled into the reaction zone. In a development of the present invention, the ester thus formed is converted into another ester by transesterification.

Process for preparing an ester by alkoxycarbonylation

The invention relates to a process for preparing carboxylic acids or salts thereof by hydrolysis or saponification of an ester, which is obtained by alkoxycarbonylation of a C2 to C20 hydrocarbon having at least one multiple bond, preferably having at least one olefinic double bond, in which the homogeneous catalyst system used is separated from the product mixture by means of membrane separation. In a development of the present invention, the ester thus formed is converted into another ester by transesterification and then hydrolyzed or saponified.

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Herne, Germany

Peter Kucmierczyk