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Pore space partition via secondary metal ions entrapped by pyrimidine hooks: influences on structural flexibility and carbon dioxide capture

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Abstract

A new way of pore space partition via secondary metal ions entrapped by pyrimidine hooks is implemented on flexible metal–organic frameworks. The new resulting (3, 4, 6)-connected MOF, HHU-2 (HHU for Hohai University), whose pore space was partitioned by additional metal ions and flexibility was confined under specific pressure and temperature, exhibits promising CO2 uptake capacity (17.5 wt% at 1 bar and 298 K), strong CO2 adsorption enthalpy (30.0 kJ mmol−1), and high CO2 selectivity towards N2 (47.3 at 298 K). Importantly, this is the first example of simultaneously achieving high CO2 selectivity as well as high CO2 uptake capacity in MOFs by flexibility confinement through the introduction of secondary metal sites.

Graphical abstract: Pore space partition via secondary metal ions entrapped by pyrimidine hooks: influences on structural flexibility and carbon dioxide capture

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Publication details

The article was received on 01 Apr 2017, accepted on 26 Jun 2017 and first published on 26 Jun 2017


Article type: Paper
DOI: 10.1039/C7TA02852K
Citation: J. Mater. Chem. A, 2017, Advance Article
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    Pore space partition via secondary metal ions entrapped by pyrimidine hooks: influences on structural flexibility and carbon dioxide capture

    Z. Lu, J. Zhang, J. Duan, L. Du and C. Hang, J. Mater. Chem. A, 2017, Advance Article , DOI: 10.1039/C7TA02852K

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