Process for preparing aldehydes and separation of the catalyst system by membrane separation

US11396488B2 · kind B2 · utility

Assignee

• Evonik Operations GmbH · DE

Inventors

• Alexander Brächer · Haltern am See, DE
• Johannes Knossalla · Gahlen, DE
• Dirk Fridag · Haltern am See, DE
• Robert Franke · Marl, DE
• Frederik Gluth · Mülheim an der Ruhr, DE
• Marc Schäpertöns · Recklinghausen, DE
• Christoph Kubis · Ostseebad Nienhagen, DE
• Anna Chiara Sale · Recklinghausen, DE
• Peter Kucmierczyk · Herne, DE
• Ana Markovic · Haltern am See, DE

Key dates

• Filing date: Jul 9, 2021
• Grant date: Jul 26, 2022
• Expiry date: Jul 9, 2041

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2531/822
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The present invention provides a process for preparing aldehydes from C2 to C20 olefins using a subsequent membrane separation to separate the homogeneously dissolved catalyst system, wherein prior to the membrane separation a gas exchange that increases the partial pressure fraction of carbon monoxide or hydrogen is carried out in order to boost catalyst retention by the membrane.