Process for heterogeneously catalyzed partial gas phase oxidation of propylene to acrylic acid

US8232425B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Martin Dieterle · Ludwigshafen, DE
• Joerg Heilek · Bammental, DE
• Klaus Joachim Mueller-Engel · Blankenloch, DE

Key dates

• Filing date: Nov 29, 2006
• Grant date: Jul 31, 2012
• Expiry date: Jan 25, 2029

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2523/00
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for heterogeneously catalyzed partial gas phase oxidation of propylene to acrylic acid, in which the starting reaction gas mixture comprises cyclopropane as an impurity and the acrylic acid, after conversion from the product gas mixture into the condensed phase, is removed with the aid of a crystallative removal.