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High CO2/CH4 and C2 Hydrocarbons/CH4 Selectivity in a Chemically Robust Porous Coordination Polymer

Authors

  • Jingui Duan,

    1. Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
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  • Masakazu Higuchi,

    1. Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
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  • Satoshi Horike,

    1. Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
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  • Maw Lin Foo,

    1. Japan Science and Technology Agency, ERATO, Kitagawa Integrated Pores Project, Kyoto Research Park, Bldg no. 3, Shimogyo-ku, Kyoto 600-8815, Japan
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  • Koya Prabhakara Rao,

    1. Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
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  • Yasutaka Inubushi,

    1. Synthesis Research Laboratory, Kurashiki Research Center, Kuraray Co. Ltd., 2045-1, Sakazu, Kurashiki, Okayama 710-0801, Japan
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  • Tomohiro Fukushima,

    1. Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
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  • Susumu Kitagawa

    Corresponding author
    1. Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
    2. Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
    3. Japan Science and Technology Agency, ERATO, Kitagawa Integrated Pores Project, Kyoto Research Park, Bldg no. 3, Shimogyo-ku, Kyoto 600-8815, Japan
    4. Japan Science and Technology Agency, ACT-C, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
    • Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan.
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Abstract

A new porous coordination polymer, ([La(BTB)H2O]·solvent (1⊃guest)), is synthesized. Gas adsorption, ideal adsorbed solution theory (IAST) and breakthrough experiments of it exhibits high CH4 separation capability toward CO2 and C2 hydrocarbons at 273 K. In addition, this also shows good water and chemical stability, in particular, it is stable at pH = 14 at 100 °C, which is unprecedented for carboxylate-based porous coordination polymers. Furthermore, the effective adsorption site for separation is revealed by using an in situ diffuse reflectance IR fourier transform (DRIFT) spectra study.

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