Evonik Degussa Gmbh

Oliver Becker

Horst-Werner Zanthoff

Franz-Felix Kuppinger

Andreas Sabbagh

Nicole Brausch

Jörg Sauer

Dennis Fruhling

Markus Weber

Dennis FRÜHLING

The present invention relates to a process for preparing unsaturated aldehydes or unsaturated carboxylic acids by heterogeneous catalytic gas phase oxidation of unsaturated or saturated hydrocarbons, comprising the process steps of: i) providing a gas mixture comprising a saturated hydrocarbon and catalytically dehydrogenating the saturated hydrocarbon in the gas phase to obtain a gas mixture comprising an unsaturated hydrocarbon in a dehydrogenation reactor having a dehydrogenation catalyst material; or ii) providing a gas mixture comprising oxygen and an unsaturated hydrocarbon; iii) catalytically oxidizing the unsaturated hydrocarbon obtained in process step i) or provided in process step ii) in the gas phase to obtain a gas mixture comprising an unsaturated aldehyde in a first oxidation reactor having a first oxidation catalyst material; wherein at least one of the reactors selected from the dehydrogenation reactor, the first oxidation reactor and the second oxidation reactor comprises at least one foam body.

Use of foam bodies in oxidation reactors for preparing unsaturated aldehydes or carboxylic acids

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Marl, Germany

Oliver Becker