Synthesis of ZIF-7/chitosan mixed-matrix membranes with improved separation performance of water/ethanol mixtures

被引：152

作者：

Kang, Chao-Hsiang ^{[1
,2
]}

Lin, Yi-Feng ^{[1
,2
]}

Huang, Yao-Sheng ^{[1
,2
]}

Tung, Kuo-Lun ^{[1
,3
]}

Chang, Kai-Shiun ^{[1
,3
]}

Chen, Jung-Tsai ^{[1
,2
]}

Hung, Wei-Song ^{[1
,2
]}

Lee, Kueir-Rarn ^{[1
,2
]}

Lai, Juin-Yih ^{[1
,2
]}

机构：

[1] Chung Yuan Christian Univ, R&D Ctr Membrane Technol, Chungli 32023, Taoyuan, Taiwan

[2] Chung Yuan Christian Univ, Dept Chem Engn, Chungli 32023, Taoyuan, Taiwan

[3] Natl Taiwan Univ, Dept Chem Engn, Taipei 10617, Taiwan

来源：

JOURNAL OF MEMBRANE SCIENCE | 2013年 / 438卷

关键词：

Mixed-matrix membrane; Zeolitic imidazolate frameworks; Metal-organic frameworks; Pervaparation; ZEOLITIC IMIDAZOLATE FRAMEWORKS; INORGANIC HYBRID MEMBRANES; METAL-ORGANIC FRAMEWORK; LONG-TERM STABILITY; PERVAPORATION DEHYDRATION; CHITOSAN MEMBRANES; HYDROGEN SELECTIVITY; BLEND MEMBRANES; ISOPROPANOL; NANOPARTICLES;

D O I：

10.1016/j.memsci.2013.03.028

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

In this study, microporous ZIF-7 crystal particles were successfully incorporated into chitosan (CS) membranes to form ZIF-7/CS mixed-matrix membranes (MMMs). The as-prepared ZIF-7/CS MMMs were used to separate mixtures of water/ethanol at 25 degrees C in the pervaporation process. The different ZIF-7 loadings in CS polymer with 0.25 g GA, such as 2.5, 4, 5, 6 and 7.5 wt%, have been tried and ZIF-7 with 5 wt% loading is the best loading condition. The separation efficiency of MMMs with 5 wt% ZIF-7 incorporation showed 19 times higher than that of the pristine CS membranes because of the rigidified polymer chain of the MMMs. The separation factor and the flux of the ZIF-7/CS membranes clearly exceed the upper limit of the previously reported CS based membranes and MMMs. The present work demonstrates better pervaporation performance of the ZIF-7 incorporated CS MMMs for the separation of water and ethanol and the feasibility of using this system for pervaporation. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：105 / 111

页数：7

共 40 条

[1] High-throughput synthesis of zeolitic imidazolate frameworks and application to CO2 capture [J].