High Performance Zeolite LTA Pervaporation Membranes on Ceramic Hollow Fibers by Dipcoating−Wiping Seed Deposition
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- 作者：Zhengbao Wang ; Qinqin Ge ; Jia Shao ; Yushan Yan
- 刊名：Journal of the American Chemical Society
- 出版年：2009
- 出版时间：May 27, 2009
- 年：2009
- 卷：131
- 期：20
- 页码：6910-6911
- 全文大小：156K
- 年卷期：v.131,no.20(May 27, 2009)
- ISSN：1520-5126
文摘
We demonstrate for the first time that by one single hydrothermal synthesis a zeolite LTA membrane with a high flux of 9.0 kg/m2 h and high water/ethanol separation factor of 10000 could be formed on a ceramic hollow fiber that is known for its ability to form a compact module. The flux is the highest reported in the literatures. A novel seeding method, dipcoating−wiping, is key to obtaining zeolite membranes with high separation performance because it reproducibly produces a uniform and trace seed layer on the support. This new seeding method is expected to have serious implications for making defect-free zeolite films and membranes for many applications. The membranes reported here have the potential to solve the key problems that have prevented zeolite membranes from widespread use for biofuel production.