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

页码：4357 / 4359

页数：3