Ceramic asymmetric hollow fibre membranes—One step fabrication process
- 作者：Chiao Chien Wei ; Oi Yee Chen ; Y. Liu ; K. Li
- 关键词：Asymmetric membranes ; Hollow fibres ; Yttria-stabilised zirconia (YSZ)
- 刊名：Journal of Membrane Science
- 出版年：2008
- 期刊代码：55_03767388
- 类别：ch
- 出版时间：15 July 2008
- 卷：320
- 期：1-2
- 页码：191-197
- 文件大小：1457 K
摘要
Ceramic hollow fibre membranes which have an asymmetric structure have been prepared in one step, using an immersion induced phase inversion technique. With this method, membranes with a high surface area per unit volume ratio can be produced, while production cost is dramatically reduced. Yttria-stabilised zirconia (YSZ) is selected as a membrane material, as it is relatively inexpensive and has superior mechanical strength as well as oxygen ion conducting properties. Therefore, both the porous and non-porous membranes prepared from the YSZ have potential applications. For example, the porous YSZ membranes can be used for fluid separations in harsh environments where normal polymeric membranes cannot be sustained, while the non-porous YSZ membranes can be applied as a solid electrolyte in electrochemical devices such as solid oxide fuel cells, oxygen pumps and chemical gas sensors.