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  • Tuning Pore Size in Square-Lattice Coordination Networks for Size-Selective Sieving of CO

    • 摘要:

      Porous materials capable of selectively capturing COfrom flue-gases or natural gas are of interest in terms of rising atmospheric COlevels and methane purification. Size-exclusive sieving of COover CHand Nhas rarely been achieved. Herein we show that a crystal engineering approach to tuning of pore-size in a coordination network, [Cu(quinoline-5-carboxyate)](Qc-5-Cu) ena+bles ultra-high selectivity for COover N(S≈40 000) and CH(S≈3300). Qc-5-Cu-sql-β, a narrow pore polymorph of the square lattice (sql) coordination network Qc-5-Cu-sql-α, adsorbs COwhile excluding both CHand N. Experimental measurements and molecular modeling validate and explain the performance. Qc-5-Cu-sql-β is stable to moisture and its separation performance is unaffected by humidity.

    • 作者:

      Kaijie Chen    David Madden    Tony Pham    Katherine Forrest    Amrit Kumar    Qingyuan Yang    Xue Wei    Brian Space    Perry Iv John J.    Jiepeng Zhang    陈小明     Michael Zaworotko   

    • 刊名:

      Angewandte Chemie - International Edition

    • 在线出版时间:

      2016