Separation of Sulfur/Gasoline Mixture with Polydimethylsiloxane/Polyetherimide Composite Membranes by Pervaporation

CIESC Journal ›› 2009, Vol. 17 ›› Issue (4): 707-710.

• • 上一篇

Separation of Sulfur/Gasoline Mixture with Polydimethylsiloxane/Polyetherimide Composite Membranes by Pervaporation

赵长伟¹, 李继定², 陈剑², 亓荣彬², 栾兆坤¹

1. State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China;
2. Department of Chemical Engineering, Tsinghua University, Beijing 100084, China

收稿日期:2008-12-02 修回日期:2009-03-23 出版日期:2009-08-28 发布日期:2010-12-30
通讯作者: ZHAO Changwei, E-mail: zhaocw@rcees.ac.cn
作者简介:
基金资助:
Supported by the National Basic Research Program of China(2009CB623404);the National Natural Science Foundation of China(5070Å109,20736003);the National High Technology Research and Development Program of China(2007AA06Z317).

Separation of Sulfur/Gasoline Mixture with Polydimethylsiloxane/Polyetherimide Composite Membranes by Pervaporation

ZHAO Changwei¹, LI Jiding², CHEN Jian², QI Rongbin², LUAN Zhaokun¹

1. State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China;
2. Department of Chemical Engineering, Tsinghua University, Beijing 100084, China

Received:2008-12-02 Revised:2009-03-23 Online:2009-08-28 Published:2010-12-30
Supported by:
Supported by the National Basic Research Program of China(2009CB623404);the National Natural Science Foundation of China(5070Å109,20736003);the National High Technology Research and Development Program of China(2007AA06Z317).

摘要/Abstract

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.

关键词: polydimethylsiloxane(PDMS)/polyetherimide(PEI)composite membranes, sulfur removal, gasoline, pervaporation

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.

Key words: polydimethylsiloxane(PDMS)/polyetherimide(PEI)composite membranes, sulfur removal, gasoline, pervaporation

赵长伟, 李继定, 陈剑, 亓荣彬, 栾兆坤. Separation of Sulfur/Gasoline Mixture with Polydimethylsiloxane/Polyetherimide Composite Membranes by Pervaporation[J]. CIESC Journal, 2009, 17(4): 707-710.

ZHAO Changwei, LI Jiding, CHEN Jian, QI Rongbin, LUAN Zhaokun. Separation of Sulfur/Gasoline Mixture with Polydimethylsiloxane/Polyetherimide Composite Membranes by Pervaporation[J]. , 2009, 17(4): 707-710.

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Separation of Sulfur/Gasoline Mixture with Polydimethylsiloxane/Polyetherimide Composite Membranes by Pervaporation

Separation of Sulfur/Gasoline Mixture with Polydimethylsiloxane/Polyetherimide Composite Membranes by Pervaporation

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