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Structural Optimization of Interpenetrated Pillared-Layer Coordination Polymers for Ethylene/Ethane Separation

Authors

  • Keisuke Kishida,

    1. Institute for Advanced and Core Technology, Showa Denko K. K. 2 Oaza Nakanosu, Oita 870-0189 (Japan)
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  • Dr. Satoshi Horike,

    1. Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510 (Japan), Fax: (+81) 75-383-2732
    2. Precursory Research for Embryonic Science and Technology (PRESTO), Japan Science and Technology Agency, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012 (Japan)
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  • Yoshihiro Watanabe,

    1. Institute for Advanced and Core Technology, Showa Denko K. K. 2 Oaza Nakanosu, Oita 870-0189 (Japan)
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  • Mina Tahara,

    1. Institute for Advanced and Core Technology, Showa Denko K. K. 2 Oaza Nakanosu, Oita 870-0189 (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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  • Prof. Susumu Kitagawa

    Corresponding author
    1. Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510 (Japan), Fax: (+81) 75-383-2732
    2. Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501 (Japan)
    • Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510 (Japan), Fax: (+81) 75-383-2732===

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Abstract

With the goal of achieving effective ethylene/ethane separation, we evaluated the gas sorption properties of four pillared-layer-type porous coordination polymers with double interpenetration, [Zn2(tp)2(bpy)]n (1), [Zn2(fm)2(bpe)]n (2), [Zn2(fm)2(bpa)]n (3), and [Zn2(fm)2(bpy)]n (4) (tp=terephthalate, bpy=4,4′-bipyridyl, fm=fumarate, bpe=1,2-di(4-pyridyl)ethylene and bpa=1,2-di(4-pyridyl)ethane). It was found that 4, which contains the narrowest pores of all of these compounds, exhibited ethylene-selective sorption profiles. The ethylene selectivity of 4 was estimated to be 4.6 at 298 K based on breakthrough experiments using ethylene/ethane gas mixtures. In addition, 4 exhibited a good regeneration ability compared with a conventional porous material.

Abstract

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