Toward effective membranes for hydrogen separation: Multichannel composite palladium membranes
- 作者：Xiaojuan Hu ; Yan Huang ; Shili Shu ; Yiqun Fan ; Nanping Xu
- 关键词：Palladium membrane ; Multichannel ; Electroless plating ; Hydrogen separation ; Membrane separator
- 刊名：Journal of Power Sources
- 出版年：2008
- 期刊代码：58_03787753
- 类别：ce
- 出版时间：15 June 2008
- 卷：181
- 期：1
- 页码：135-139
- 文件大小：1091 K
摘要
Composite palladium membranes can be used as a hydrogen separator because of their excellent permeability and permselectivity. The total membrane area in a hydrogen separator must be reasonably large for industrial use, and it is important that each membrane provides a large enough area. Such a demand can be well met by introducing multichannel composite membranes. In this work, a commercially available microporous ceramic filter with 19 channels was used as a membrane substrate, and the diameter of each channel was 4 mm. A uniform thin palladium layer was fabricated inside the narrow channels by using an electroless plating method, and the resulting membranes were highly permeable and selective. This membrane concept provides a high surface-to-volume ratio without causing significant pressure loss, making the hydrogen separator compact and capable. However, special attention should be paid to cleaning the membrane after electroless plating.