Issue 43, 2012

Synthesis, characterisation and adsorption properties of a porous copper(ii) 3D coordination polymer exhibiting strong binding enthalpy and adsorption capacity for carbon dioxide

Abstract

The synthesis and characterisation of microporous coordination polymers containing copper(II) or cobalt(II) and 2-(pyridin-4-yl)malonaldehyde (Hpma) is described and the gas adsorption properties evaluated. Single-crystal X-ray structure determinations identified the structures as 3[M(pma)2]·2X (M = Cu, 1; Co, 2; X = MeOH, MeCN), which contain 3D networks with rutile topology and continuous 1D rectangular channels with diameters ranging from 3 to 4 Å. The materials exhibit low BET surface areas of 143 m2 g−1, but possess large capacities for carbon dioxide capture of 14.1 wt%. The small pore channels are shown to account for this, delivering a particularly strong binding enthalpy to adsorbed CO2 of 38 kJ mol−1, and a very large adsorption capacity relative to the low surface area.

Graphical abstract: Synthesis, characterisation and adsorption properties of a porous copper(ii) 3D coordination polymer exhibiting strong binding enthalpy and adsorption capacity for carbon dioxide

Supplementary files

Article information

Article type
Paper
Submitted
26 Jun 2012
Accepted
29 Aug 2012
First published
24 Sep 2012

Dalton Trans., 2012,41, 13364-13369

Synthesis, characterisation and adsorption properties of a porous copper(II) 3D coordination polymer exhibiting strong binding enthalpy and adsorption capacity for carbon dioxide

P. Eckold, W. J. Gee, M. R. Hill and S. R. Batten, Dalton Trans., 2012, 41, 13364 DOI: 10.1039/C2DT31361H

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