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How Hydration Drastically Improves Adsorption Selectivity for CO2 over CH4 in the Flexible Chromium Terephthalate MIL-53


  • The authors thank Alexandre Vimont for discussions concerning initial IR results. This work was supported by EU funding through the FP6-Specific Targeted Research Project “DeSANNS” (SES6-020133).


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Taking a deep breath: The hydrated form of the microporous metal organic framework MIL-53(Cr) performs better than the dehydrated form for the selectivity binding of carbon dioxide over methane (see graph). The polarity of the adsorbed gas is thought to play a role in inducing framework flexibility and the breathing of the pores.