SCI和EI收录∣中国化工学会会刊

›› 2011, Vol. 19 ›› Issue (5): 821-832.

• • 上一篇    下一篇

An Effective Method to Improve the Performance of Fixed Carrier Membrane via Incorporation of CO2-selective Adsorptive Silica Nanoparticles

于型伟1,2,3, 王志1,2,3, 赵娟1,2,3, 袁芳1,2,3, 李诗纯1,2,3, 王纪孝1,2,3, 王世昌1,3   

  1. 1. Chemical Engineering Research Center, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;
    2. State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, China;
    3. Tianjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin University, Tianjin 300072, China
  • 收稿日期:2011-06-10 修回日期:2011-07-21 出版日期:2011-10-28 发布日期:2011-10-28
  • 通讯作者: WANG Zhi,E-mail:wangzhi@tju.edu.cn
  • 基金资助:
    Supported by the National Natural Science Foundation of China (20836006);the National Basic Research Program(2009CB623405);the Science & Technology Pillar Program of Tianjin (10ZCKFSH01700);the Programme of Introducing Talents of Discipline to Universities (B06006);the Cheung Kong Scholar Program for Innovative Teams of the Ministry of Education (IRT0641)

An Effective Method to Improve the Performance of Fixed Carrier Membrane via Incorporation of CO2-selective Adsorptive Silica Nanoparticles

YU Xingwei1,2,3, WANG Zhi1,2,3, ZHAO Juan1,2,3, YUAN Fang1,2,3, LI Shichun1,2,3, WANG Jixiao1,2,3, WANG Shichang1,3   

  1. 1. Chemical Engineering Research Center, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;
    2. State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, China;
    3. Tianjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin University, Tianjin 300072, China
  • Received:2011-06-10 Revised:2011-07-21 Online:2011-10-28 Published:2011-10-28
  • Supported by:
    Supported by the National Natural Science Foundation of China (20836006);the National Basic Research Program(2009CB623405);the Science & Technology Pillar Program of Tianjin (10ZCKFSH01700);the Programme of Introducing Talents of Discipline to Universities (B06006);the Cheung Kong Scholar Program for Innovative Teams of the Ministry of Education (IRT0641)

摘要: Fixed carrier membrane exhibits attractive CO2 permeance and selectivity due to its transport mecha-nism of reaction selectivity (facilitated transport). However, its performance needs improvement to meet cost targets for CO2 capture. This study attempts to develop membranes with multiple permselective mechanisms in order to enhance CO2 separation performance of fixed carrier membrane. In this study, a novel membrane with multiple permselective mechanisms of solubility selectivity and reaction selectivity was developed by incorporating CO2-selective adsorptive silica nanoparticles in situ into the tertiary amine containing polyamide membrane formed by interfacial polymerization (IP). Various techniques were employed to characterize the polyamide and polyamide-silica composite membranes. The TGA result shows that nanocomposite membranes exhibit superior thermal stability than pure polyamide membranes. In addition, gas permeation experiments show that both nanocomposite membranes have larger CO2 permeance than pure polyamide membranes. The enhanced CO2/N2 separation performance for nanocomposite membranes is mainly due to the thin film thickness, and multiple permselective mechanisms of solubility selectivity and reaction selectivity.

关键词: carbon dioxide, fixed carrier, interfacial polymerization, tertiary amine, CO2-selective adsorptive silica

Abstract: Fixed carrier membrane exhibits attractive CO2 permeance and selectivity due to its transport mecha-nism of reaction selectivity (facilitated transport). However, its performance needs improvement to meet cost targets for CO2 capture. This study attempts to develop membranes with multiple permselective mechanisms in order to enhance CO2 separation performance of fixed carrier membrane. In this study, a novel membrane with multiple permselective mechanisms of solubility selectivity and reaction selectivity was developed by incorporating CO2-selective adsorptive silica nanoparticles in situ into the tertiary amine containing polyamide membrane formed by interfacial polymerization (IP). Various techniques were employed to characterize the polyamide and polyamide-silica composite membranes. The TGA result shows that nanocomposite membranes exhibit superior thermal stability than pure polyamide membranes. In addition, gas permeation experiments show that both nanocomposite membranes have larger CO2 permeance than pure polyamide membranes. The enhanced CO2/N2 separation performance for nanocomposite membranes is mainly due to the thin film thickness, and multiple permselective mechanisms of solubility selectivity and reaction selectivity.

Key words: carbon dioxide, fixed carrier, interfacial polymerization, tertiary amine, CO2-selective adsorptive silica