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Issue 7, 2012
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Hydrogen storage and selective carbon dioxide capture in a new chromium(III)-based infinite coordination polymer

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Abstract

A new chromium(III)-based infinite coordination polymer (ICP) was synthesized under solvothermal conditions. The morphology, particle size and the textural porosity of the resulting solids could be monitored and controlled by adjusting the volume ratio of the solvent mixture (1,4-dioxane/N,N′-dimethylformamide). Two differently textured samples were further compared using powder X-ray diffraction, scanning electron microscopy, FT-IR spectroscopy, solid-state UV-Vis spectroscopy and thermogravimetric analysis. Their sorption capacities for H2, CO2 and CH4 were measured by using volumetric gas adsorption, while the isosteric heats of adsorption for the same gasses were calculated based on gas sorption data at different temperatures. Both samples showed a remarkable selectivity for CO2 over CH4 at 273 K. H2 and CO2 sorption capacities, (respectively 16.9 mg g−1 at 77 K and 817 mm Hg and 168 mg g−1 at 273 K and 760 mm Hg) of the sample composed of the nanosized particles, are comparable or even superior to values reported for most MOFs and ZIFs under similar conditions.

Graphical abstract: Hydrogen storage and selective carbon dioxide capture in a new chromium(iii)-based infinite coordination polymer

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Publication details

The article was received on 26 Nov 2011, accepted on 05 Jan 2012 and first published on 13 Feb 2012


Article type: Paper
DOI: 10.1039/C2RA01188C
Citation: RSC Adv., 2012,2, 2939-2945

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    Hydrogen storage and selective carbon dioxide capture in a new chromium(III)-based infinite coordination polymer

    J. Zhang, L. Sun, F. Xu, F. Li, H. Zhou, F. Huang, Z. Gabelica and C. Schick, RSC Adv., 2012, 2, 2939
    DOI: 10.1039/C2RA01188C

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