PAF-11/poly (dimethylsiloxane) mixed matrix pervaporation membranes for dealcoholization of aqueous solutions

被引:20
|
作者
Jia, Zhiqian [1 ]
Hao, Shuang [1 ]
Jiang, Mingchen [1 ]
机构
[1] Beijing Normal Univ, Coll Chem, Lab Membrane Sci & Technol, Beijing 100875, Peoples R China
基金
中国国家自然科学基金;
关键词
porous aromatic frameworks; pervaporation; poly (dimethylsiloxane) membrane; mixed matrix membranes; dealcoholization; PDMS MEMBRANES; TRANSPORT-PROPERTIES; ORGANIC FRAMEWORKS; HYBRID MEMBRANES; ETHANOL; DIFFUSION; MIXTURES; BUTANOL; FERMENTATION; SILICALITE-1;
D O I
10.1002/jctb.5688
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
BACKGROUNDPorous aromatic frameworks (PAFs) have received considerable attention due to their designable framework topologies and high stability. In this work PAF-11 particles were synthesized and incorporated in poly(dimethylsiloxane) (PDMS) matrix for dealcoholation of aqueous solutions for the first time. The effects of PAF-11 loading on the hydrophobilicity, sorption degree, partition coefficient and pervaporation (PV) performance of mixed matrix membranes (MMMs) were studied. RESULTSIt was found that, with the increased PAF-11 loading, the contact angle of MMMs with water increased whereas the sorption degree in water, ethanol and n-butanol declined, demonstrating the improved swelling stability of MMMs. Pristine PDMS and MMMs displayed alcohol sorption-selectivity, and the partition coefficients of ethanol and n-butanol in MMMs increased with PAF-11 loading. In the pervaporation of ethanol and n-butanol aqueous solutions, the MMMs showed an increase in permeation fluxes and separation factor, as well as good stability in long-term running, demonstrating anti-trade-off effects and good application prospects. CONCLUSIONSIt was deduced that, in the pervaporation removal of organics from aqueous solutions, anti-trade-off effects could be fulfilled by introducing hydrophobic fillers with pore sizes larger than molecules of water and organics. (c) 2018 Society of Chemical Industry
引用
收藏
页码:3276 / 3283
页数:8
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