Different adsorption behaviors of methane and carbon dioxide in the isotypic nanoporous metal terephthalates MIL-53 and MIL-47.

MADIREL, Université de Provence - CNRS UMR 6121, Centre de St Jérôme, 13397 Marseille Cedex 20, France.
Journal of the American Chemical Society (Impact Factor: 11.44). 11/2005; 127(39):13519-21. DOI: 10.1021/ja054668v
Source: PubMed

ABSTRACT A distinct step in the isotherm occurs during the adsorption of CO2 on MIL-53 at 304 K. Such behavior is neither observed during the adsorption of CH4 on MIL-53 nor during the adsorption on the isostructural MIL-47. This phenomenon seems to be due to a different mechanism than that of previous adsorption steps on MOF samples. It is suggested that a breathing behavior is induced in MIL-53 during CO2 adsorption.

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