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Issue 2, 2014
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High CO2/N2/O2/CO separation in a chemically robust porous coordination polymer with low binding energy

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Abstract

Porous coordination polymers (PCPs), constructed from organic linkers and metal ions, can provide special pore environments for selective CO2 capture. Although many PCPs have been reported, a rational design for identifying PCPs that adsorb CO2 molecules with a low binding energy, high separation ability and high chemical stability remains a great challenge. Here, we propose and validate, experimentally and computationally, a new PCP, [La(BTN)DMF]·guest (PCP-1⊃guest), that has a large aromatic organic surface and a low binding energy for high CO2 separation from four-gas mixtures (CO2–N2–O2–CO) at ambient temperature. In addition, it shows good water and chemical stability; in particular, it is stable from pH = 2 to 12 at 100 °C, which is unprecedented for carboxylate-based PCPs.

Graphical abstract: High CO2/N2/O2/CO separation in a chemically robust porous coordination polymer with low binding energy

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Supplementary files

Article information


Submitted
03 Aug 2013
Accepted
18 Oct 2013
First published
21 Oct 2013

Chem. Sci., 2014,5, 660-666
Article type
Edge Article

High CO2/N2/O2/CO separation in a chemically robust porous coordination polymer with low binding energy

J. Duan, M. Higuchi, R. Krishna, T. Kiyonaga, Y. Tsutsumi, Y. Sato, Y. Kubota, M. Takata and S. Kitagawa, Chem. Sci., 2014, 5, 660
DOI: 10.1039/C3SC52177J

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