Issue 12, 2016

A new Co(ii) metal–organic framework with enhanced CO2 adsorption and separation performance

Abstract

The new functional ligand 5-(1H-pyrazole-4-carboxamido)isophthalic acid (H3L) reacts with CoSO4·7H2O to form a new three-dimensional metal–organic framework, [Co4(HL2−)4(DMF)2(H2O)2]n·solvent (1) with a new (3,6)-connected topology. 1 exhibits one-dimensional polar channels with approximate dimensions of 6.0 × 8.0 Å2 decorated with accessible functional sites. These sites contribute to enhanced CO2 uptake (103.2 cm3 g−1 at 273 K and 1 bar) and CO2/CH4 selectivity (7.25 for CO2/CH4 = 50 : 50; 8.59 for CO2/CH4 = 5 : 95) at 298 K and 1 bar. DFT calculations were also performed to elucidate the binding sites. These results suggest that complex 1 is an attractive candidate for CO2 adsorption and separation.

Graphical abstract: A new Co(ii) metal–organic framework with enhanced CO2 adsorption and separation performance

Supplementary files

Article information

Article type
Research Article
Submitted
18 Jul 2016
Accepted
20 Sep 2016
First published
20 Sep 2016

Inorg. Chem. Front., 2016,3, 1510-1515

A new Co(II) metal–organic framework with enhanced CO2 adsorption and separation performance

X. Liu, Y. Jia, Y. Zhang, G. Ren, R. Feng, S. Zhang, M. J. Zaworotko and X. Bu, Inorg. Chem. Front., 2016, 3, 1510 DOI: 10.1039/C6QI00191B

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