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Synthesis of new crosslinked porous ammonium-based poly(ionic liquid) and application in CO2 adsorption

Authors

  • Guangren Yu,

    1. Beijing Key Laboratory of Membrane Science and Technology and College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
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  • Qingzeng Li,

    1. Beijing Key Laboratory of Membrane Science and Technology and College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
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  • Na Li,

    1. Beijing Key Laboratory of Membrane Science and Technology and College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
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  • Ziwei Man,

    1. Beijing Key Laboratory of Membrane Science and Technology and College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
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  • Chenghao Pu,

    1. Beijing Key Laboratory of Membrane Science and Technology and College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
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  • Charles Asumana,

    1. Beijing Key Laboratory of Membrane Science and Technology and College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
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  • Xiaochun Chen

    Corresponding author
    1. Beijing Key Laboratory of Membrane Science and Technology and College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
    • Beijing Key Laboratory of Membrane Science and Technology and College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China. E-mail: chenxc@mail.buct.edu.cn

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Abstract

A new poly(ionic liquid) of N,N-methylenebisacrylamide (MBA)-crosslinked-poly(4-vinylbenzyltriethylammonium hexafluorophosphate)(MBA-crosslinked-P[VBTEA][PF6]) is prepared through the ion exchange of KPF6 with the precursor of MBA-crosslinked-P[VBTEA][Cl]; the precursor is synthesized by 4-vinylbenzyltriethylammonium chloride and MBA via inverse suspension polymerization. MBA-crosslinked-P[VBTEA][PF6] is a thermally stable (decomposes at nearly 300°C) and porous (apparent porosity of 64.3% and specific surface of 39.12 m2/g) polymer particle with high purity, as indicated by Fourier transformed infrared, energy dispersive spectroscopy, thermogravimetric, scanning electron microscopy, and porous analyses. It is observed that MBA-crosslinked-P[VBTEA][PF6] has good CO2 adsorption capability of 14.04 mg/g at 0.2 MPa and 25°C, and can be recovered by desorption at vacuum and 80°C, and reused with 99% CO2 adsorption after four cycles. POLYM. ENG. SCI., 54:59–63, 2014. © 2013 Society of Plastics Engineers

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