Microwave synthesis of high performance FAU-type zeolite membranes: Optimization, characterization and pervaporation dehydration of alcohols

被引：43

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：

JOURNAL OF MEMBRANE SCIENCE | 2009年 / 337卷 / 1-2期

关键词：

FAU-type zeolite membrane; In situ synthesis; Microwave heating; Taguchi experimental design; Pervaporation; VAPOR PERMEATION; FORMATION MECHANISM; MIXTURES;

D O I：

10.1016/j.memsci.2009.03.026

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

High performance FAU-type zeolite membranes were synthesized by the "in situ aging-microwave synthesis" (AM) method in a clear solution with the molar composition of 70Na(2)O:1Al(2)O(3):2OSiO(2):200OH(2)O. The AM method couples in situ aging at relatively low temperature and fast crystallization under microwave heating (MH). To achieve the optimization of the synthesis parameters, the in situ aging and MH temperatures, as well as the probable ranges of the corresponding times were firstly determined by means of investigating their effects on the crystal structures and morphologies of the zeolite layers. Then the Taguchi experimental design was employed to further optimize the in situ aging and MH times of the two-stage synthesis. The as-synthesized zeolite membranes showed high pervaporation performance for the dehydration of ethanol and isopropanol aqueous solutions. Only pure water was detected in the permeate before the water content decreased to ca. 9% for water/ethanol mixtures and ca. 6% for water/isopropanol mixtures, respectively. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：47 / 54

页数：8

共 20 条

[1]

Chu P., 1988, [No title captured], Patent No. [4,778,666., 4778666]

[2] Microwave techniques in the synthesis and modification of zeolite catalysts. A review [J].