Adsorption and separation of light alkane hydrocarbons by porous hexacyanocobaltates (III)
2009
The adsorption and separation of light n-alkane hydrocarbons (propane, butane, pentane, hexane and heptane) by zinc and
cadmium hexacyanocobaltates (III) were studied from inverse gas chromatographic data. These two solids are representative
of the porous frameworks found for transition metals hexacyanometallates. For cadmium, the porous framework is related
to the presence of systematic vacancies for the building block, [Co(CN)6], while for Zn it is a consequence of a tetrahedral
coordination for the Zn atom. These linear light hydrocarbons (paraffins) are effectively separated by these two porous
frameworks. The involved differential adsorption heats and the related separation coefficients were estimated from the
recorded chromatographic data. No significant differences for the separation ability of light n-alkane hydrocarbons by the
evaluatedmaterials were observed. Copyright c 2009 JohnWiley & Sons, Ltd.
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