Higher Symmetry Multinuclear Clusters of Metal-Organic Frameworks for Highly Selective CO 2 Capture

Jingjing Jiang, Zhiyong Lu, Mingxing Zhang, Jingui Duan, Wenwei Zhang, Yi Pan, Junfeng Bai

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107 Scopus citations

Abstract

A new approach of finely tuning multinuclear clusters of metal-organic frameworks (MOFs) through symmetry-upgradingly isoreticular transformation was first presented and a bcu-type MOF, {[Cu 44 -O)Cl 2 (IN) 4 ][CuCl 2 ]} (NJU-Bai35; NJU-Bai for Nanjing University Bai group), with cluster [Cu 44 -O)Cl 2 (COO) 4 N 4 ] of higher symmetry compared to the pristine MOF, was successfully synthesized. The symmetry upgrading implemented on the inorganic part triggers the adjustment of channels in NJU-Bai35 to fit CO 2 molecules, leading to a high CO 2 adsorption capacity (7.20 wt % at ∼0.15 bar and 298 K) and high selectivity of CO 2 over N 2 and CH 4 (275.8 for CO 2 /N 2 and 11.6 for CO 2 /CH 4 ) in NJU-Bai35. Breakthrough experiments further confirmed that NJU-Bai35 might be an excellent candidate for CO 2 capture and natural gas purification.

Original languageEnglish
Pages (from-to)17825-17829
Number of pages5
JournalJournal of the American Chemical Society
Volume140
Issue number51
DOIs
StatePublished - 26 Dec 2018

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