Process for producing a composite membrane

US8196755B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Armin Diefenbacher · Germersheim, DE
• Hartwig Voss · Bischofswerda, DE
• Gunter Schuch · Ludwigshafen, DE
• Manfred Noack · Berlin, DE
• Ingolf Voigt · Jena, DE
• Hannes Richter · Hermsdorf, DE
• Juergen Caro · Berlin, DE

Key dates

• Filing date: May 21, 2007
• Grant date: Jun 12, 2012
• Expiry date: Apr 11, 2028

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D2323/24
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A process for the production of a composite membrane, one or more microporous separation layers comprising a zeolite of the MFI type being produced by hydrothermal synthesis on a porous substrate, wherein one or more additives from the group consisting of linear (C1-C4)-alcohols, ammonia, primary, secondary and tertiary amines having in each case (C1-C4)-alkyl radicals, (C1-C4)-aminoalcohols and (C3-C4)-ketones are added to the synthesis solution for the hydrothermal synthesis.