期刊
MATERIALS LETTERS
卷 116, 期 -, 页码 167-170出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2013.11.008
关键词
Amorphous materials; Crystal growth; Faujasite zeolite; Thick films; In situ hydrothermal method
资金
- Chinese Natural Science Fund [51262002, 50962002]
- Guangxi Natural Science Fund [2012GXNSFDA053003]
A self-supporting faujasite (FAU) zeolite membrane was synthesized by in situ hydrothermal method at 90 degrees C for 15 h from a Na2O-3SiO(2)-Al2O3 geopolymer gel that was prepared from the raw materials metakaolin and sodium silicate solutions (molar ratio of SiO2/Na2O=1). The results revealed that the BET surface area and the compressive strength of the FAU zeolite membrane were 63.31 m(2)/g and 19.6 MPa, respectively. The pervaporation study of its separation performance in a C2H5OH/H2O mixture demonstrated that the permeate flux and separation factor can reach 1.41 kg/(h . m(2)) and 16.8, respectively, at a feed temperature of 50 degrees C and an alcohol composition of 70 wt%, making it an effective pervaporation membrane for the separation of alcohol/water mixtures. (C) 2013 Elsevier B.V. All rights reserved.
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