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; Su, Yi; Wang, Yujue

doi:10.1016/j.memsci.2010.05.028

Cited by 97 publications

(67 citation statements)

References 46 publications

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“…These can be explained by the enhanced physical cross-linking and the restricted plasticization as more Silicalite-1 particles are introduced. 27,29 Silicalite-1 particles can yield more polymer-particle interfacial area, which could effectively restrict the membrane swelling and plasticization and improve the membrane separation performance.…”

Section: Pervaporation Performance Of Mmms and Ssmsmentioning

confidence: 99%

“…[25][26][27] Hydrophobic Silicalite-1 zeolite was added into polymer membranes for pervaporation separation of ethanol-water mixture. [28][29][30][31][32][33] Yi et al 29 improved the affinity between Silicalite-1 and PDMS by modifying the Silicalite-1 particles with vinyltriethoxysilane (VTES). The thermal stability of Silicalite-1/PDMS hybrid membrane has been improved.…”

Section: Introductionmentioning

confidence: 99%

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Preparation and characterization of Silicalite‐1/PDMS surface sieving pervaporation membrane for separation of ethanol/water mixture

Liu

et al. 2015

J of Applied Polymer Sci

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To improve the pervaporation performance of Silicalite-1/PDMS composite membrane by adding a small amount of Silicalite-1 zeolite, novel Silicalite-1/PDMS surface sieving membranes (SSMs) were prepared by attaching Silicalite-1 particles on the PDMS membrane surface. The obtained membranes and traditional mixed-matrix membranes (MMMs) were characterized by SEM, XRD, TGA, FT-IR, and pervaporation separation of ethanol-water mixture. Effects of Silicalite-1 particles content, feed temperatures, and feed compositions on the separation performance were discussed. From the cross-section view SEM images of SSMs, a two-layer structure was observed. The thickness of the Silicalite-1 layer was about 300 nm to 2 lm. The TGA analysis indicates that the zeolite concentration in 3 wt % SSM is lower than 10 wt % MMMs. In the ethanol/water pervaporation experiment, the separation factor of Silicalite-1/PDMS SSMs increased considerably compared with pure PDMS membrane. When the suspensions concentrations of Silicalite-1 particles reached 3 wt %, the separation factor was about 217% increase over pure PDMS membrane and 52.9% increase over 10 wt % Silicalite-1/PDMS MMMs. As the ethanol concentration in the feed increases, the separation factor of SSMs increases, whereas permeation flux decreases. At the same time, with increasing operating temperature, the permeation flux of SSMs increased. The stability of SSMs at high temperature is better than the traditional MMMs.

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Section: Pervaporation Performance Of Mmms and Ssmsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of Silicalite‐1/PDMS surface sieving pervaporation membrane for separation of ethanol/water mixture

Liu

et al. 2015

J of Applied Polymer Sci

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“…5)). Testing demonstrates that high loading membranes without defects is the key factor for excellent membrane performance [23][24][25].…”

Section: Pervaporation Performance Of Membranesmentioning

confidence: 99%

Modified ZSM‐5/polydimethylsiloxane mixed matrix membranes for ethanol/water separation via pervaporation

Han

Zhang

et al. 2014

Polymer Composites

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In this article, chlorosilane-modified ZSM-5 particles were incorporated into polydimethylsiloxane (PDMS) to form mixed matrix membranes (MMMs) for ethanol/ water mixture separation via pervaporation (PV). The membranes were characterized by Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, and mechanical performance testing. The maximum loading and dispersion of ZSM-5 into PDMS were improved by chlorosilane modification. To evaluate the PV performance, the MMMs were used to separate an aqueous ethanol solution. The effect of zeolite loading and operational conditions on PV performance was investigated in detail. The separation factor of the composite membranes filled with modified ZSM-5 increased considerably versus unmodified membrane, while the total flux decreased to some degree. Of all the chlorosilane-modified membranes, dodecyltrichlorosilane modified ZSM-5 filled PDMS showed the best separation factor of 15.8 for ethanol. POLYM. COM-POS., 37:1282-1291

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“…In the last three decades, significant improvements in the performance of polymeric membranes for ultrafiltration, nanofiltration, pervaporation, gas separation, and fuel cells have been made (Malekpour et al, 2011;Yi et al, 2010;Ferraz et al, 2007;Mehta and Zydney, 2005;Nyström et al, 1995;Pagliero et al, 1993;Vittadello et al, 2003;Thayumanasundaram et al, 2010), and our understanding of the relationships between the structure, permeability and selectivity of polymeric membranes has been greatly advanced (Geise et al, 2011;Dal-Cin et al, 2008;Cong et al 2007). Polymeric membrane materials such as polytrimethylsilyl propyne (PTMSP), poly(amide imide) (PAI), polyphosphazene (PPN), Poly(dimethylsiloxane) (PDMS), cross-linked polyethylene glycol (PEG) and polyoctylmethylsiloxane (POMS) have been continuously studied (Ozdemir et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

“…Since the development of ultrafiltration as a viable industrial process in the 1960s, there have been literally thousands of different ultrafiltration membranes sold commercially. In 1998 there were more than 90 companies providing membranes and/or modular systems for ultrafiltration and microfiltration (Yi et al, 2010). Fuel cells have been known to science since 1839.…”

Section: Introductionmentioning

confidence: 99%

Organic-inorganic hybrid membranes in separation processes: a 10-year review

Souza

Quadri

2013

Braz. J. Chem. Eng.

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-In relation to some inorganic membranes, polymeric membranes have relatively low separation performance. However, the processing flexibility and low cost of polymers still make them highly attractive for many industrial separation applications. Polymer-inorganic hybrid membranes constitute an emerging research field and have been recently developed to improve the separation properties of polymer membranes because they possess properties of both organic and inorganic membranes such as good hydrophilicity, selectivity, permeability, mechanical strength, and thermal and chemical stability. The structures and processing of polymer-inorganic nanocomposite hybrid membranes, as well as their use in the fields of ultrafiltration, nanofiltration, pervaporation, gas separation and separation mechanism are reviewed.

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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

Cited by 97 publications

References 46 publications

Preparation and characterization of Silicalite‐1/PDMS surface sieving pervaporation membrane for separation of ethanol/water mixture

Preparation and characterization of Silicalite‐1/PDMS surface sieving pervaporation membrane for separation of ethanol/water mixture

Modified ZSM‐5/polydimethylsiloxane mixed matrix membranes for ethanol/water separation via pervaporation

Organic-inorganic hybrid membranes in separation processes: a 10-year review

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