Surface modification of silicalite-1 with alkoxysilanes to improve the performance of PDMS/silicalite-1 pervaporation membranes: Preparation, characterization and modeling
文献类型：期刊论文
| 作者 | Zhuang, Xiaojie1,2; Chen, Xiangrong1; Su, Yi1; Luo, Jianquan1; Feng, Shichao1; Zhou, Hui1,2; Wan, Yinhua1 |
| 刊名 | JOURNAL OF MEMBRANE SCIENCE
 |
| 出版日期 | 2016-02-01 |
| 卷号 | 499期号:FEB页码:386-395 |
| 关键词 | Silicalite-1 Polydimethysiloxane (PDMS) Pervaporation Modification |
| ISSN号 | 0376-7388 |
| 英文摘要 | The objective of this work was to study the effect of silane coupling agent on the performance of mixed matrix membranes (MMMs) and to develop a mathematical model to analyze the performance of the MMMs. The silicalite-1 modified by various alkoxysilanes was incorporated into polydimethysiloxane (PDMS) to prepare dense MMMs. The modified silicalite-1 and corresponding MMMs were characterized by FT-IR, CA, TGA, DSC and SEM. These results confirmed that the silicalite-1 was successfully modified by various alkoxysilanes. The effects of alkoxysilane chain length and chemical structure on the pervaporation (PV) performance of MMMs were discussed in detail. All the silane modification did not change the framework of silicalite-1. Better dispersion of silicalite-1 in PDMS was attained after modification and all the modified membranes could eliminate the nonselective voids inside the membranes. Moreover, the silane coupling agent had a contradictory effect on the PV performance of the membranes. On the one hand, the silane coupling agent improved the compatibility between silicalite-1 and PDMS. On the other hand, the silane coupling agent introduced a silane phase around the silicalite-1, which depressed the selectivity of the pristine silicalite-1. Silicalite-1 grafted with vinyl group showed the best compatibility with PDMS, and the resulting MMMs had the highest separation factor to ethanol because strong chemical bonds between vinyl-silicalite-1 and PDMS were formed with the thinnest silane film. For the separation of ethanol from a dilute solution, a separation factor of 34.3 was obtained with the vinyl-MMMs, which was 49% higher than that of unmodified membrane. As the silicalite-1 content increased, the separation factor increased. Furthermore, a mathematical model was proposed to predict the performance of MMMs. And both the permeability and selectivity obtained by the proposed model were in good agreement with the experiment data. (C) 2015 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] | MIXED MATRIX MEMBRANES ; ALCOHOL PERMSELECTIVE PERVAPORATION ; SILICONE-RUBBER MEMBRANES ; FILLED PDMS MEMBRANES ; COMPOSITE MEMBRANES ; AQUEOUS MIXTURES ; ZEOLITE ; ETHANOL ; SEPARATION ; WATER |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000365591200038 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/19902]  |
| 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, State Key Lab Biochem Engn Inst, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhuang, Xiaojie,Chen, Xiangrong,Su, Yi,et al. Surface modification of silicalite-1 with alkoxysilanes to improve the performance of PDMS/silicalite-1 pervaporation membranes: Preparation, characterization and modeling[J]. JOURNAL OF MEMBRANE SCIENCE,2016,499(FEB):386-395. |
| APA | Zhuang, Xiaojie.,Chen, Xiangrong.,Su, Yi.,Luo, Jianquan.,Feng, Shichao.,...&Wan, Yinhua.(2016).Surface modification of silicalite-1 with alkoxysilanes to improve the performance of PDMS/silicalite-1 pervaporation membranes: Preparation, characterization and modeling.JOURNAL OF MEMBRANE SCIENCE,499(FEB),386-395. |
| MLA | Zhuang, Xiaojie,et al."Surface modification of silicalite-1 with alkoxysilanes to improve the performance of PDMS/silicalite-1 pervaporation membranes: Preparation, characterization and modeling".JOURNAL OF MEMBRANE SCIENCE 499.FEB(2016):386-395. |
入库方式： OAI收割
来源：过程工程研究所
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