Evonik Operations Gmbh

Evonik Degussa Gmbh

Evonik Oxeno Gmbh & Co. Kg

Sartorius Stedim Biotech Gmbh

Peter Kreis

Robert Franke

Frank Stenger

Corinna Hecht

Jennifer Haßelberg

Ralf Meier

Dirk Fridag

Martin Roos

Armin Matthias Rix

Wolfgang Demmer

Marc Oliver Kristen

James Elder

Franz-Felix Kuppinger

Roland Wursche

Jürgen Mosler

Markus Priske

Jürgen Herwig

Goetz Baumgarten

Kévin Micoine

Marina Lazar

René Faber

Frederik Gluth

Jessika Schüller

Christian Psiorz

Raphael Schriewer

Arnd Bruhns

Andrzej Górak

Constantin Frerick

Linda Arsenjuk

Christian Schnitzer

Peter Van Beijeren Bergen En Henegouwen

Florian Ott

James Edward Elder

A process for providing a carbon monoxide-containing stream involves a separation of synthesis gas into a hydrogen-rich gas stream and a carbon monoxide-rich gas stream containing carbon monoxide to an extent of 85% by volume or more. The separation is effected in an arrangement composed of three membrane separation stages. Prior to the performance of the membrane separation, the synthesis gas is pretreated for removal of secondary components present in the synthesis gas.

Process for producing carbon monoxide-containing streams

A hydroformylation process can be used for short-chain olefins, especially C2 to C5 olefins, wherein the catalyst system is heterogenized on a support that contains a porous ceramic material. Systems can also be used for carrying out said process.

Process for hydroformylation of short-chain olefins in the gas phase

A process has the ability to produce polyalkenamer-containing compositions. Stages of the process include converting at least one cycloalkene by ring-opening metathetic polymerization to obtain a polyalkenamer-containing product mixture, and working up the product mixture to remove at least one of a monomer and an oligomer of the at least one cycloalkene to obtain the polyalkenamer-containing composition. The working up stage is effected by a diafiltration.

Process for preparing polyalkenamers for packaging applications

The invention relates to a process for hydroformylating short-chain olefins, especially C2 to C5 olefins, in which the catalyst system is in heterogenized form on a support of a porous ceramic material, and to plants for performing this process.

Process for hydroformylating short-chain olefins in the gas phase

Process for hydroformylating short-chain olefins using a heterogenized catalyst system without ionic liquid

The present invention provides an apparatus comprising a feed arranged below the middle of the apparatus, a quenching agent inlet arranged above the feed, an outlet arranged below the feed and a draw arranged above the quenching agent inlet, the apparatus having a region provided with one or more packing elements, wherein at least one means which ensures the formation of a liquid layer having a height of at least 1 cm is present between the quenching agent inlet and a packing element present between the quenching agent inlet and feed. The present invention also provides a process for preparing acrylic acid, which includes a step of oxidizing acrolein, wherein the reaction mixture obtained in this oxidation is contacted with water as quenching agent in an inventive apparatus, and a composition obtainable as bottom product in the process according to the invention, comprising acrylic acid and water.

Process for preparing acrylic acid

A homogeneous catalyst system is removed from a reaction mixture of two liquid phases by separating the two liquid phases with a membrane having at least one separation-active layer in such a way that the homogeneous catalyst system is at least partially concentrated in a membrane retentate; wherein the reaction mixture contains at least one partially epoxidized cyclic unsaturated compound having twelve carbon atoms; and wherein the membrane separation-active layer contains crosslinked a silicone acrylate and/or polydimethylsiloxane and/or polyimide.

Membrane-supported catalyst removal in the epoxidation of cyclic unsaturated C12 compounds, for example cyclododecene (CDEN)

Growing community of inventors

Dortmund, Germany

Peter Kreis