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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Author(s)
Wade, Casey
Dinca, Mircea
Date Issued
April 2012
Journal
Dalton Transactions
Publisher
Royal Society of Chemistry
Citation
Wade, Casey R., and Mircea Dinca. “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).” Dalton Transactions 41.26 (2012): 7931-7938. CrossRef. Web.
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Author's final manuscript
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].
MIT Department
Massachusetts Institute of Technology. Department of Chemistry
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DOI of Published Version
https://doi.org/10.1039/c2dt30372h
