FAU-type zeolite membranes synthesized by microwave assisted in situ crystallization

被引：48
|
作者：
Zhu, Guangqi [1 ,2 ]
Li, Yanshuo [1 ]
Zhou, Han [1 ,2 ]
Liu, Jie [1 ]
Yang, Weishen [1 ]
机构：
[1] Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
来源：
MATERIALS LETTERS | 2008年 / 62卷 / 28期
关键词：
FAU; thin films; crystal growth; microwave synthesis;
D O I：
10.1016/j.matlet.2008.07.026
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
FAU-type zeolite membranes were prepared by an "in situ aging-microwave synthesis" (AM) method using a clear solution with the molar composition of 70Na(2)O: 1Al(2)O(3): 20SiO(2): 2000H(2)O. After two-stage AM synthesis, a defect-free FAU zeolite layer consisted of uniform zeolite crystals was formed on the support surface. The Si/Al ratio was ca. 1.5. The single-gas permeation and single-liquid vapor permeation properties of the as-synthesized zeolite membranes were investigated. The permselectivity of H-2 and N-2 was as high as 4.25 for FAU-type zeolite membranes. Pervaporation measurements were carried out for the dehydration of ethanol and isopropanol aqueous solutions. FAU-type zeolite membranes displayed relatively high permeation flux and water-selectivity. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：4357 / 4359
页数：3
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