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Issue 44, 2012
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Synthesis, characterization and sorption properties of NH2-MIL-47

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Abstract

An amino functionalized vanadium-containing Metal Organic Framework, NH2-MIL-47, has been synthesized by a hydrothermal reaction in an autoclave. Alternatively, a synthesis route via microwave enhanced irradiation has been optimized to accelerate the synthesis. The NH2-MIL-47 exhibits the same topology as MIL-47, in which the V center is octahedrally coordinated. After an exchange procedure in DMF the V+III center is oxidized to V+IV, which is confirmed by EPR and XPS measurements. The CO2 and CH4 adsorption properties have been evaluated and compared to MIL-47, showing that both MOFs have an almost similar adsorption capacity and affinity for CO2. DFT-based molecular modeling calculations were performed to obtain more insight into the adsorption positions for CO2 in NH2-MIL-47. Furthermore our calculated adsorption enthalpies agree well with the experimental values.

Graphical abstract: Synthesis, characterization and sorption properties of NH2-MIL-47

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Publication details

The article was received on 26 Jun 2012, accepted on 01 Oct 2012 and first published on 01 Oct 2012


Article type: Paper
DOI: 10.1039/C2CP42137B
Citation: Phys. Chem. Chem. Phys., 2012,14, 15562-15570
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    Synthesis, characterization and sorption properties of NH2-MIL-47

    K. Leus, S. Couck, M. Vandichel, G. Vanhaelewyn, Y. Liu, G. B. Marin, I. V. Driessche, D. Depla, M. Waroquier, V. V. Speybroeck, J. F. M. Denayer and P. V. D. Voort, Phys. Chem. Chem. Phys., 2012, 14, 15562
    DOI: 10.1039/C2CP42137B

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