Evonik Operations Gmbh

Evonik Carbon Black Gmbh

Evonik Oxeno Gmbh & Co. Kg

Evonik Degussa Gmbh

Orion Engineered Carbons Gmbh

Frank Stenger

Robert Franke

Alfons Karl

Marc Oliver Kristen

Peter Kreis

Corinna Hecht

Jennifer Haßelberg

Klaus Bergemann

Gerd Tauber

Ralph McIntosh

Werner Kalbitz

Johann Mathias

Heinz Zoch

Joachim Fröhlich

Manfred Dannehl

Christian Götz

Peter Pilgram

Manfred Nagel

Jutta Zimmermann

Jessika Schüller

Rüdiger Mertsch

Arkadi Maisels

Mandy Mühlbach

Yves Gorat Stommel

Linda Arsenjuk

Vinzenz Fleischer

Mandy MÜHLBACH

Karsten Aldenhövel

Martin Miessen

Rudolf Scharffenberg-Kahlke

Florian Ott

Thomas Riedemann

Christian GÖTZ

The present invention relates to a simple process for regenerating a hydroformylation catalyst consisting of a heterogenized catalyst system on a support consisting of a porous ceramic material. The invention also relates to a process for the start-up of the hydroformylation reaction after regeneration according to the invention.

Process for regenerating a catalyst for the hydroformylation of olefins in the gas phase

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

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 invention relates to carbon aerogels with particle sizes less than 1 &#x3bc;m. The carbon aerogels are prepared by (A)reacting a mono- and/or polyhydroxybenzene, an aldehyde and a catalyst in a reactor at a reaction temperature T in the range from 75-200&#xb0; C. at a pressure of 80-2400 kPa, (B) then spraying the reaction mixture from process step (A) into an acid, (C) drying the resulting product from process step (B) and (D) carbonizing it. The carbon aerogels according to the invention can be used as filler, reinforcing filler, UV stabilizer, electrode material, sound absorbents, thermal insulating material, catalyst, catalyst support, conductivity additive, absorbent for gas and/or liquid preparation or pigment.

Carbon aerogels, process for their preparation and their use

The invention relates to a pigment granulate which contains 40 to 65% by weight of pigment and at least 10% by weight of a compound of general formula (I) CH&#x2014;(CH)&#x2014;CH&#x2014;O&#x2014;[(CH)&#x2014;O]&#x2014;H, wherein n=8-18, p=1-4 and m=35-100, the weight ratio of the compound of general formula I to the pigment being &#x2267; the STSA surface area of the pigment in m/g multiplied by 0.0021 g/mand the mass-weighted particle size of the pigment granulate being &#x3c;20 &#x3bc;m. The pigment granulate can be produced by dispersing the pigment and the compound of formula I in a solvent and then drying the dispersion obtained. The pigments according to the invention can be used for dying and/or the antistatic finishing in water-based paints and lacquer systems, dispersion on paints, printing inks, ink systems and coating systems.

Pigment granulate, method for producing the same and use thereof

The invention relates to a process for aftertreating carbon black, wherein the carbon black is subjected to a carrier gas flow in a fluidized bed apparatus in the lower region of the apparatus, an additional gas stream is introduced into the fluidized bed apparatus, and the carbon black is aftertreated in the fluidized bed which arises.

Process for aftertreating carbon black

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Alzenau, Germany

Frank Stenger