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Issue 26, 2012
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Investigation of the synthesis, activation, and isosteric heats of CO2 adsorption of the isostructural series of metal–organic frameworks M3(BTC)2 (M = Cr, Fe, Ni, Cu, Mo, Ru)

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Abstract

The synthesis, activation, and heats of CO2 adsorption for the known members of the M3(BTC)2 (HKUST-1) isostructural series (M = Cr, Fe, Ni, Zn, Ni, Cu, Mo) were investigated to gain insight into the impact of CO2–metal interactions for CO2 storage/separation applications. With the use of modified syntheses and activation procedures, improved BET surface areas were obtained for M = Ni, Mo, and Ru. The zero-coverage isosteric heats of CO2 adsorption were measured for the Cu, Cr, Ni, Mo, and Ru analogues and gave values consistent with those reported for MOFs containing coordinatively unsaturated metal sites, but lower than for amine functionalized materials. Notably, the Ni and Ru congeners exhibited the highest CO2 affinities in the studied series. These behaviors were attributed to the presence of residual guest molecules in the case of Ni3(BTC)2(Me2NH)2(H2O) and the increased charge of the dimetal secondary building unit in [Ru3(BTC)2][BTC]0.5.

Graphical abstract: Investigation of the synthesis, activation, and isosteric heats of CO2 adsorption of the isostructural series of metal–organic frameworks M3(BTC)2 (M = Cr, Fe, Ni, Cu, Mo, Ru)

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Publication details

The article was received on 16 Feb 2012, accepted on 26 Mar 2012 and first published on 26 Apr 2012


Article type: Paper
DOI: 10.1039/C2DT30372H
Citation: Dalton Trans., 2012,41, 7931-7938
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    Investigation of the synthesis, activation, and isosteric heats of CO2 adsorption of the isostructural series of metal–organic frameworks M3(BTC)2 (M = Cr, Fe, Ni, Cu, Mo, Ru)

    C. R. Wade and M. Dincă, Dalton Trans., 2012, 41, 7931
    DOI: 10.1039/C2DT30372H

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