Preparation of acrolein or acrylic acid or a mixture thereof from propane

US7388109B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Otto Machhammer · Mannheim, DE
• Goetz-Peter Schindler · Mannheim, DE
• Christoph Adami · Weinheim, DE
• Claus Hechler · Mannheim, DE
• Martin Dieterle · Ludwigshafen, DE

Key dates

• Filing date: May 18, 2005
• Grant date: Jun 17, 2008
• Expiry date: Jul 29, 2026

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C51/252
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for preparing acrolein or acrylic acid or a mixture thereof from propane, in which the propane is initially dehydrogenated under heterogeneous catalysis to give propene, secondary components are removed and the remaining gas mixture, comprising propane and propene, is subjected to the heterogeneously catalyzed partial oxidation to acrolein or acrylic acid or a mixture thereof as the target product, target product is removed from the product gas mixture and the remaining residual gas, comprising excess oxygen and unconverted propane, is recycled into the propane dehydrogenation in such a way that the other propane fed to the dehydrogenation is at least partly converted under dehydrogenating conditions at the recycle point.