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:
Aug. 24, 2004
Filed:
Dec. 13, 2002
Otto Machhammer, Mannheim, DE;
Goetz-Peter Schindler, Mannheim, DE;
Andreas Tenten, Maikammer, DE;
Klaus Harth, Altleiningen, DE;
Peter Zehner, Ludwigshafen, DE;
Klaus Joachim Müller-Engel, Stutensee, DE;
Frank Rosowski, Mannheim, DE;
Frieder Borgmeier, Mannheim, DE;
BASF Aktiengesellschaft, Ludwigshafen, DE;
Abstract
In a process for the preparation of acrolein or acrylic acid or a mixture thereof from propane, the propane is subjected, in a first reaction stage, to a partial dehydrogenation under heterogeneous catalysis to give propene, of the components contained in the product gas mixture formed in the first reaction stage other than propene and propane at least a portion of the molecular hydrogen present is then separated off from said mixture and the product gas mixture is then used for the preparation of acrolein and/or acrylic acid by gas-phase catalytic propylene oxidation, molecular nitrogen being present for diluting the reaction gas mixture during the propylene oxidation.