Adsorption and separation of light alkane hydrocarbons by porous hexacyanocobaltates (III) |
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| Authors: | G Autie‐Castro M Autie E Reguera J Santamaría‐González R Moreno‐Tost E Rodríguez‐Castellón A Jiménez‐López |
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| Institution: | 1. Instituto de Ciencia y Tecnología de Materiales, Universidad de La Habana, Cuba;2. Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada del IPN, Unidad Legaría, DF, México;3. Departamento de Química Inorgánica, Cristalografía y Mineralogía, Facultad de Ciencias, Universidad de Málaga, Espa?a |
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| Abstract: | 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 evaluated materials were observed. Copyright © 2009 John Wiley & Sons, Ltd. |
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| Keywords: | porous solids n‐alkane separation inverse gas chromatography n‐alkane adsorption |
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