Preparation of vinyltriethoxysilane (VTES) modified silicalite/PDMS hybrid pervaporation membranes: Membrane characterization and its application in ethanol separation from dilute aqueous solutions
文献类型：会议论文
| 作者 | Wan, Yinhua; Yi, Shouliang; Su, Yi |
| 出版日期 | 1905-07-01 |
| 会议日期 | November 8, 2009 - November 13, 2009 |
| 会议地点 | Nashville, TN, United states |
| 关键词 | Silicate minerals - Silicones - Solutions - Ethanol - Membranes - Microchannels - Pervaporation - Thermodynamic stability - Bond strength (chemical) - Chemical stability - Coupling agents - Evaporation |
| 英文摘要 | To improve the affinity between silicalite and polydimethylsiloxane (PDMS), the silicalite-1 particles was modified by a novel silane coupling agent vinyltriethoxysilane (VTES) and incorporated into polydimethylsiloxane (PDMS) matrix for the preparation of silicalite/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 strongly bonded to the surface of silicalite-1 particles and the modification did not influence the framework of silicalite-1 crystals. VTES enhanced the interaction of silicalite-1 particles with PDMS through chemical bonds and suppressed the formation of microvoids at polymer-silicalite interface, thus improved the thermal stability of the hybrid membrane. The effect of silicalite loading on the pervaporation performances of the hybrid membranes with dilute ethanol solutions was investigated. As compared with the unmodified hybrid membranes, the silane modified silicalite/PDMS hybrid membranes effectively improved the pervaporation selectivity at different silicalite loadings. With increasing silicalite loading, membrane selectivity increased for both unmodified and VTES modified silicalite/PDMS hybrid membranes, and a selectivity of 33 was obtained when VETS modified silicalite loadings was 67%. It was also found that with increasing silicalite loading, the total flux of both unmodified and VTES modified silicalite/PDMS hybrid membranes decreased while the ethanol flux of both hybrid membranes increased. |
| 资助机构 | American Institute of Chemical Engineers |
| 会议录 | 2009 AIChE Annual Meeting, 09AIChE
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| 学科主题 | Polydimethylsiloxane |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/59479]  |
| 作者单位 | National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China |
| 推荐引用方式 GB/T 7714 | Wan, Yinhua,Yi, Shouliang,Su, Yi. Preparation of vinyltriethoxysilane (VTES) modified silicalite/PDMS hybrid pervaporation membranes: Membrane characterization and its application in ethanol separation from dilute aqueous solutions[C]. 见:. Nashville, TN, United states. November 8, 2009 - November 13, 2009. |
入库方式： OAI收割
来源：过程工程研究所
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