Preparation and characterization of vinyltriethoxysilane (VTES) modified silicalite-1/PDMS hybrid pervaporation membrane and its application in ethanol separation from dilute aqueous solution

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	Preparation and characterization of vinyltriethoxysilane (VTES) modified silicalite-1/PDMS hybrid pervaporation membrane and its application in ethanol separation from dilute aqueous solution
	Yi, Shouliang 1,2; Su, Yi 1; Wan, Yinhua 1
刊名	JOURNAL OF MEMBRANE SCIENCE
	2010-09-15
卷号	360 期号:1-2 页码:341-351
关键词	Silicalite-1 Polydimethylsiloxane (PDMS) Pervaporation Vinyltriethoxysilane Hybrid membrane
ISSN号	0376-7388
通讯作者	Wan, YH
英文摘要	To improve the affinity between silicalite-1 and polydimethylsiloxane (PDMS), the silicalite-1 particles were modified by a silane coupling agent vinyltriethoxysilane (VTES) and incorporated into polydimethylsiloxane (PDMS) matrix for the preparation of silicalite-1/PDMS hybrid membranes. The modified silicalite-1 particles were examined by XRD, FT-IR and TGA, and the results showed that the silane coupling agent was bonded to the surface of silicalite-1 particles through chemical bonds and the modification did not influence the framework of silicalite-1 crystals. VTES could enhance the interaction of silicalite-1 particles with PDMS through chemical bonds and hence suppressed the formation of microvoids at polymer-silicalite-1 interface, as a result, the thermal stability of the hybrid membrane could be improved. The effect of silicalite-1 loading on the pervaporation performances of the hybrid membranes with dilute ethanol solutions was investigated. As compared with the unmodified hybrid membranes, the VTES modified silicalite-1/PDMS hybrid membranes effectively improved the pervaporation selectivity at different silicalite-1 loadings. With increasing silicalite-1 loading, membrane selectivity increased for both unmodified and VTES modified silicalite-1/PDMS hybrid membranes, and a selectivity of 32 was obtained when VETS modified silicalite-1 loadings was 67%. It was also found that with increasing silicalite-1 loading, the total flux of both unmodified and VTES modified silicalite-1/PDMS hybrid membranes decreased while the ethanol flux of both hybrid membranes increased. With increasing the feed ethanol concentration at a given temperature, the total flux, ethanol flux, and ethanol concentration in permeate increased almost proportionally, while water flux decreased and the separation factor decreased slightly. An increase in temperature increased the permeation fluxes of both ethanol and water, while the separation factor was more or less constant at a given ethanol concentration. (C) 2010 Elsevier B.V. All rights reserved.
WOS标题词	Science & Technology ; Technology ; Physical Sciences
类目[WOS]	Engineering, Chemical ; Polymer Science
研究领域[WOS]	Engineering ; Polymer Science
关键词[WOS]	SILICONE-RUBBER MEMBRANES ; PMMA COMPOSITE MEMBRANES ; MIXED MATRIX MEMBRANES ; ABE FERMENTATION BROTH ; PDMS MEMBRANES ; ECONOMIC-ANALYSIS ; ZEOLITE ; RECOVERY ; MIXTURES ; PERFORMANCE
收录类别	SCI
语种	英语
WOS记录号	WOS:000280311500039
公开日期	2013-11-13
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.ipe.ac.cn/handle/122111/5712]
专题	过程工程研究所_生化工程国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Proc Engn, Natl Key Lab Biochem Engn, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Yi, Shouliang,Su, Yi,Wan, Yinhua. Preparation and characterization of vinyltriethoxysilane (VTES) modified silicalite-1/PDMS hybrid pervaporation membrane and its application in ethanol separation from dilute aqueous solution[J]. JOURNAL OF MEMBRANE SCIENCE,2010,360(1-2):341-351.
APA	Yi, Shouliang,Su, Yi,&Wan, Yinhua.(2010).Preparation and characterization of vinyltriethoxysilane (VTES) modified silicalite-1/PDMS hybrid pervaporation membrane and its application in ethanol separation from dilute aqueous solution.JOURNAL OF MEMBRANE SCIENCE,360(1-2),341-351.
MLA	Yi, Shouliang,et al."Preparation and characterization of vinyltriethoxysilane (VTES) modified silicalite-1/PDMS hybrid pervaporation membrane and its application in ethanol separation from dilute aqueous solution".JOURNAL OF MEMBRANE SCIENCE 360.1-2(2010):341-351.