Oxeno Olefinchemie Gmbh

Guido Protzmann

Klaus-Diether Wiese

Wilfried Bueschken

Alfred Kaizik

Dirk Roettger

Juergen Koch

Dieter Hess

Franz Nierlich

Bernhard Scholz

Martin Trocha

Wilfried B&uuml;schken

Wilfried Buschken

Dirk R&ouml;ttger

A multi-stage synthesis is effective for preparing 1-olefins from aldehydes. The aldehyde is condensed with acetone to form an &agr;,&bgr;-unsaturated ketone. The unsaturated ketone is hydrogenated to yield a saturated alcohol. By dehydrating the saturated alcohol a 1-olefin is obtained. The olefin can be isolated in high yield and purified.

Preparation of 1-olefins

A process for conducting multiphase reactions, especially the preparation of &agr;,&bgr;-unsaturated ketones by condensation of aldehydes with ketones.

Condensation of aldehydes with ketones by multiphase reaction

Aldehydes are prepared in a hydroformylation apparatus by the multiphase hydroformylation reaction of one or more olefins with hydrogen and carbon monoxide, where the continuous phase contains a solvent mixture and the hydroformylation catalyst is present in the continuous phase, at least one olefin is present in the dispersed phase, and the loading factor of the tube reactor is greater than or equal to 0.8.

Process for the hydroformylation of olefins

The invention relates to a catalytic process for carrying out multiphase reactions in a tubular reactor, with the catalyst being present in the continuous phase and at least one starting material in a disperse phase and the loading factor B of the tubular reactor being equal to or greater than 0.8. The process is especially suitable in particular for the hydroformylation of olefins. The aldehydes thus prepared can ideally be used for the preparation of alcohols, carboxylic acids or in aldol condensations.

Process for the catalytically carrying out multiphase reactions, in particular hydroformylations

Multistage process for the preparation of oxo aldehydes and/or alcohols

Process for conducting an aldol condensation

The invention relates to a process for the catalytic aldol condensation of aldehydes by means of a multiphase reaction in a tube reactor, wherein the catalyst is present in the continuous phase and at least one aldehyde is present in a dispersed phase and the loading factor B of the tube reactor is equal to or greater than 0.8; the aldol condensation products obtained in this way can be used for preparing alcohols or carboxylic acids.

Process for catalytic aldol condensations by means of a multiphase reaction

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Marl, Germany

Guido Protzmann