Direct Synthesis of Amine-functionalized Mesoporous Silica for CO2 Adsorption

›› 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

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

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

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

HU Zhihui, ZHANG Donghui, WANG Jixiao. Direct Synthesis of Amine-functionalized Mesoporous Silica for CO₂ Adsorption[J]. , 2011, 19(3): 386-390.

胡智辉, 张东辉, 王纪孝. Direct Synthesis of Amine-functionalized Mesoporous Silica for CO₂ Adsorption[J]. , 2011, 19(3): 386-390.

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Direct Synthesis of Amine-functionalized Mesoporous Silica for CO₂ Adsorption

Direct Synthesis of Amine-functionalized Mesoporous Silica for CO₂ Adsorption

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