Issue 3, 2023

Two different pore architectures of cyamelurate-based metal–organic frameworks for highly selective CO2 capture under ambient conditions

Abstract

In the context of porous coordination materials toward CO2 capture and separation, two new metal–organic frameworks termed IRH-6 and IRH-7 were synthesized with square and rhombic microchannel pores, respectively. These materials exhibit high CO2 uptakes of 2.67 mol kg−1 (IRH-6) and 2.78 mol kg−1 (IRH-7) at 100 kPa and 298 K. Grand canonical Monte Carlo simulation demonstrated strong non-covalent interactions between quadripolar CO2 molecules and these nitrogen-rich frameworks. CO2/CH4 (50 : 50), CO2/N2 (15 : 85), and CO2/H2 (15 : 85) gas mixtures were investigated by ideal adsorbed solution theory and showed excellent CO2 selectivity under ambient conditions for both porous materials. In particular, a remarkable increase in the CO2 selectivity to 102 for IRH-7 over 31 for IRH-6 was observed for the CO2/CH4 binary mixture, which highlights the effect of pore aperture modification on preferential CO2 uptake over other conventional gases.

Graphical abstract: Two different pore architectures of cyamelurate-based metal–organic frameworks for highly selective CO2 capture under ambient conditions

Supplementary files

Article information

Article type
Research Article
Submitted
17 အောက် 2022
Accepted
14 ဒီ 2022
First published
15 ဒီ 2022

Inorg. Chem. Front., 2023,10, 1037-1048

Two different pore architectures of cyamelurate-based metal–organic frameworks for highly selective CO2 capture under ambient conditions

M. Essalhi, M. Mohan, N. Dissem, N. Ferhi, A. Abidi, T. Maris and A. Duong, Inorg. Chem. Front., 2023, 10, 1037 DOI: 10.1039/D2QI02208G

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