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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, Shouliang1,2; Su, Yi1; Wan, Yinhua1; Wan, YH
2010-09-15
Source PublicationJOURNAL OF MEMBRANE SCIENCE
ISSN0376-7388
Volume360Issue:1-2Pages:341-351
AbstractTo 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.
KeywordSilicalite-1 Polydimethylsiloxane (Pdms) Pervaporation Vinyltriethoxysilane Hybrid Membrane
SubtypeArticle
WOS HeadingsScience & Technology ; Technology ; Physical Sciences
DOI10.1016/j.memsci.2010.05.028
Indexed BySCI
Language英语
WOS KeywordSILICONE-RUBBER MEMBRANES ; PMMA COMPOSITE MEMBRANES ; MIXED MATRIX MEMBRANES ; ABE FERMENTATION BROTH ; PDMS MEMBRANES ; ECONOMIC-ANALYSIS ; ZEOLITE ; RECOVERY ; MIXTURES ; PERFORMANCE
WOS Research AreaEngineering ; Polymer Science
WOS SubjectEngineering, Chemical ; Polymer Science
WOS IDWOS:000280311500039
Citation statistics
Cited Times:65[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/5712
Collection生化工程国家重点实验室
Corresponding AuthorWan, YH
Affiliation1.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
Recommended Citation
GB/T 7714
Yi, Shouliang,Su, Yi,Wan, Yinhua,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[J]. JOURNAL OF MEMBRANE SCIENCE,2010,360(1-2):341-351.
APA Yi, Shouliang,Su, Yi,Wan, Yinhua,&Wan, YH.(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.
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