In situ preparation of COF-LZU1 in poly(ether-block-amide) membranes for efficient pervaporation of n-butanol/water mixture

被引：45
|
作者：
Wu, Guorong [1 ,2 ]
Li, Yongliang [3 ]
Geng, Yanzi [1 ]
Jia, Zhiqian [1 ]
机构：
[1] Beijing Normal Univ, Coll Chem, Lab Membrane Sci & Technol, Beijing 100875, Peoples R China
[2] East China Univ Technol, Sch Chem Biol & Mat Sci, Nanchang 330013, Jiangxi, Peoples R China
[3] Beijing Normal Univ, Analyt & Testing Ctr, Beijing 100875, Peoples R China
来源：
JOURNAL OF MEMBRANE SCIENCE | 2019年 / 581卷
基金：
中国国家自然科学基金;
关键词：
COF-LZU1; Poly(ether-block-amide); Mixed matrix membranes; In-situ; Pervaporation; MIXED MATRIX MEMBRANES; COVALENT ORGANIC FRAMEWORK; AQUEOUS-SOLUTIONS; HYBRID MEMBRANES; BIO-BUTANOL; SEPARATION; WATER; DEHYDRATION; PERFORMANCE; RECOVERY;
D O I：
10.1016/j.memsci.2019.03.044
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Well-dispersion of fillers in polymers is crucial for the preparation of mixed matrix membranes(MMMs). In this paper, COF-LZU1 particles were in-situ prepared in poly(ether-block-amide) membranes for the first time, and the as-obtained MMMs exhibited higher n-butanol/water sorption selectivity and pervaporation selectivity in comparison with that of MMMs prepared by conventional blending methods. The effects of reactants concentrations, growth temperature and solvents on property and pervaporation performance of MMMs were investigated. For the benzene-1,3,5-tricarbaldehyde (TFB) concentration of 2.0 mmol L-1, growth temperature of 70 degrees C, TFB to p-phenylenediamine molar ratio of 1:1.5, and solvent of n-butanol, the MMMs showed maximum separation factor (22.2) (increased by 139% in comparison with that of pristine membranes) and peameation flux of 611 g m(-2) h(-1), demonstrating great prospect for the recovery of n-butanol.
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页码：1 / 8
页数：8
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