Metal solution-diffusion membrane and method for producing the same

US6964697B2 · kind B2 · utility

Assignee

• Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

• Xiulian Pan · 东风镇, CN
• Norbert Stroh · Magstadt, DE
• Herwig Brunner · Stuttgart, DE

Key dates

• Filing date: Jul 3, 2002
• Grant date: Nov 15, 2005
• Expiry date: Jul 3, 2022

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S55/05
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A metal solution-diffusion membrane of a macroporous base on which a thin metal membrane layer is formed is disclosed. In the membrane, the base includes a hollow fiber with a metal material containing an intermediate layer being formed between the hollow fiber and the metal membrane layer. The metal solution-diffusion membrane can be made with a very thin metal membrane layer with high permeability and possesses long-term stability as well as a great separation surface/volume ratio. A method for producing a metal solution-diffusion membrane in which the intermediate layer serves to provide nuclei for the subsequent currentless deposition of the metal layer is also disclosed.