| 硅橡胶复合膜渗透汽化分离硫/汽油混合物 |
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| 引用本文： | 赵长伟,李继定,陈剑,亓荣彬,栾兆坤.硅橡胶复合膜渗透汽化分离硫/汽油混合物[J].中国化学工程学报,2009,17(4):707-710. |
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| 作者姓名： | 赵长伟 李继定 陈剑 亓荣彬 栾兆坤 |
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| 作者单位： | State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China ; Department of Chemical Engineering, Tsinghua University, Beijing 100084, China ; |
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| 基金项目： | 国家重点基础研究发展规划(973计划)，国家自然科学基金，国家高技术研究发展计划(863计划) |
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| 摘 要： | Worldwide environment has resulted in a limit on the sulfur content of gasoline. It is urgent to investigate the desulfurization of gasoline. The polydimethylsiloxane (PDMS)/polyetherimide (PEI) composite membranes were prepared by casting a PDMS solution onto porous PEI substrates and characterized by scanning electron microscope (SEM). The membranes were used for sulfur removal from gasoline by pervaporation. The effects of feed temperature, sulfur content in the feed and PDMS layer thickness on membrane performance were investigated, and an activation energy of permeation was obtained. Experimental results indicated that higher feed temperature yielded higher total flux and lower sulfur enrichment factor. The total flux varied little with the increase of sulfur content in the feed, but the sulfur enrichment factor first increased with the amount of thiophene added into the gasoline, and then the variation was little. The increase of PDMS layer thickness resulted in a smaller flux but a larger sulfur enrichment factor. The result indicates that the PDMS/PEI composite membranes are promising for desulfurization by pervaporation.
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| 关 键 词： | polydimethylsiloxane (PDMS)/polyetherimide (PEI) composite membranes sulfur removal gasoline pervaporation |
| 收稿时间： | 2008-12-2 |
| 修稿时间： | 2009-3-23
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Separation of Sulfur/Gasoline Mixture with Polydimethylsiloxane/ Polyetherimide Composite Membranes by Pervaporation |
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| ZHAO Changwei,LI Jiding,CHEN Jian,QI Rongbin,LUAN Zhaokun.Separation of Sulfur/Gasoline Mixture with Polydimethylsiloxane/ Polyetherimide Composite Membranes by Pervaporation[J].Chinese Journal of Chemical Engineering,2009,17(4):707-710. |
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| Authors: | ZHAO Changwei LI Jiding CHEN Jian QI Rongbin LUAN Zhaokun |
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| Affiliation: | State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China Department of Chemical Engineering, Tsinghua University, Beijing 100084, China |
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| Abstract: | Worldwide environment has resulted in a limit on the sulfur content of gasoline. It is urgent to investigate the desulfurization of gasoline. The polydimethylsiloxane (PDMS)/polyetherimide (PEI) composite membranes were prepared by casting a PDMS solution onto porous PEI substrates and characterized by scanning electron microscope (SEM). The membranes were used for sulfur removal from gasoline by pervaporation. The effects of feed temperature, sulfur content in the feed and PDMS layer thickness on membrane performance were investigated, and an activation energy of permeation was obtained. Experimental results indicated that higher feed temperature yielded higher total flux and lower sulfur enrichment factor. The total flux varied little with the increase of sulfur content in the feed, but the sulfur enrichment factor first increased with the amount of thiophene added into the gasoline, and then the variation was little. The increase of PDMS layer thickness resulted in a smaller flux but a larger sulfur enrichment factor. The result indicates that the PDMS/PEI composite membranes are promising for desulfurization by pervaporation. |
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| Keywords: | polydimethylsiloxane (PDMS)/polyetherimide (PEI) composite membranes sulfur removal gasoline pervaporation |
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