SCI和EI收录∣中国化工学会会刊

›› 2011, Vol. 19 ›› Issue (3): 386-390.

• SEPARATION SCIENCE AND ENGINEERING • Previous Articles     Next Articles

Direct Synthesis of Amine-functionalized Mesoporous Silica for CO2 Adsorption

HU Zhihui, ZHANG Donghui, WANG Jixiao   

  1. Chemical Engineering Research Center, State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
  • Received:2010-09-20 Revised:2011-03-17 Online:2011-06-28 Published:2011-06-28
  • Supported by:
    Supported by Tianjin Hi-tech Support Program Key Projects, China (2009F3-0005)

Direct Synthesis of Amine-functionalized Mesoporous Silica for CO2 Adsorption

胡智辉, 张东辉, 王纪孝   

  1. Chemical Engineering Research Center, State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
  • 通讯作者: ZHANG Donghui, E-mail: donghuizhang@tju.edu.cn
  • 基金资助:
    Supported by Tianjin Hi-tech Support Program Key Projects, China (2009F3-0005)

Abstract: Amine-functionalized mesoporous silica was prepared by using lauric acid and N-stearoyl-l-glutamic acid as structure directing agents via the S-N+-I- mechanism and applied to CO2 adsorption at room temperature. With γ-aminopropyltriethoxysilane as co-structure directing agent and due to the direct electrostatic interaction with anionic surfactant, most of the amino groups were uniformly distributed at the inner surface of pores and the performance was stable. The amine-functionalized mesoporous silica was characterized by Fourier transform infrared spectrometer, X-ray diffraction, nitrogen physisorption and thermogravimetric analysis. The CO2 adsorption capacity was measured by digital recording balance. At the room temperature and under the atmospheric pressure, the adsorption capacity of LAA-AMS-0.2 for CO2 and N2 is 1.40 mmol·g-1 and 0.03 mmol·g-1, respectively, indicating high separation coefficient of CO2/N2.

Key words: amine-functionalize mesoporous silica, CO2 adsorption, N2 adsorption

摘要: Amine-functionalized mesoporous silica was prepared by using lauric acid and N-stearoyl-l-glutamic acid as structure directing agents via the S-N+-I- mechanism and applied to CO2 adsorption at room temperature. With γ-aminopropyltriethoxysilane as co-structure directing agent and due to the direct electrostatic interaction with anionic surfactant, most of the amino groups were uniformly distributed at the inner surface of pores and the performance was stable. The amine-functionalized mesoporous silica was characterized by Fourier transform infrared spectrometer, X-ray diffraction, nitrogen physisorption and thermogravimetric analysis. The CO2 adsorption capacity was measured by digital recording balance. At the room temperature and under the atmospheric pressure, the adsorption capacity of LAA-AMS-0.2 for CO2 and N2 is 1.40 mmol·g-1 and 0.03 mmol·g-1, respectively, indicating high separation coefficient of CO2/N2.

关键词: amine-functionalize mesoporous silica, CO2 adsorption, N2 adsorption