Method for the production of acrolein or acrylic acid or the mixture thereof from propane

US6781017B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• 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 · Blankenloch, DE
• Frank Rosowski · Mannheim, DE
• Frieder Borgmeier · Mannheim, DE

Key dates

• Filing date: Dec 13, 2002
• Grant date: Aug 24, 2004
• Expiry date: Dec 13, 2022

Classification

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

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.