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Issue 27, 2012
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Highly selective CO2/CH4 gas uptake by a halogen-decorated borazine-linked polymer

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Abstract

A new borazine-linked polymer featuring chlorine-decorated cavities, BLP-10(Cl), has been prepared by the thermal decomposition of benzidine–boron trichloride in toluene under refluxing conditions. BLP-10(Cl) exhibits a moderate Langmuir surface area (1308 m2 g−1) and one of the highest CO2/CH4 selectivities (28.3) by porous materials at 1.0 bar and 273 K. Computational studies revealed that H2, CO2, and CH4 interact more favorably with the borazine unit with isosteric heats of adsorption of 7.46, 28.3, and 20.2 kJ mol−1, respectively. These values are in good agreement with experimental data collected by using the virial method. Results from this study suggest that including highly polarizable and halogenated building units into the framework of porous architectures can significantly enhance their performance in gas separation applications.

Graphical abstract: Highly selective CO2/CH4 gas uptake by a halogen-decorated borazine-linked polymer

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Supplementary files

Article information


Submitted
22 Feb 2012
Accepted
26 Apr 2012
First published
26 Apr 2012

J. Mater. Chem., 2012,22, 13524-13528
Article type
Paper

Highly selective CO2/CH4 gas uptake by a halogen-decorated borazine-linked polymer

T. E. Reich, S. Behera, K. T. Jackson, P. Jena and H. M. El-Kaderi, J. Mater. Chem., 2012, 22, 13524
DOI: 10.1039/C2JM31123B

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