The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 23, 2014
Filed:
Jul. 29, 2009
Horst-werner Zanthoff, Mulheim an der Ruhr, DE;
Nicole Brausch, Recklinghausen, DE;
Franz-felix Kuppinger, Marl, DE;
Jorg Sauer, Dulmen, DE;
Andreas Sabbagh, Bensheim, DE;
Dennis Fruhling, Gelsenkirchen, DE;
Markus Weber, Bottrop, DE;
Oliver Becker, Marl, DE;
Horst-Werner Zanthoff, Mulheim an der Ruhr, DE;
Nicole Brausch, Recklinghausen, DE;
Franz-Felix Kuppinger, Marl, DE;
Jorg Sauer, Dulmen, DE;
Andreas Sabbagh, Bensheim, DE;
Dennis Fruhling, Gelsenkirchen, DE;
Markus Weber, Bottrop, DE;
Oliver Becker, Marl, DE;
Evonik Degussa GmbH, Essen, DE;
Abstract
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.