Adsorption and separation of light alkane hydrocarbons by porous hexacyanocobaltates (III)

G. Autie-Castro, M. Autie, E. Reguera, J. Santamaría-González, R. Moreno-Tost, E. Rodríguez-Castellón, A. Jiménez-López

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14 Scopus citations

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.

Original languageEnglish
Pages (from-to)730-734
Number of pages5
JournalSurface and Interface Analysis
Volume41
Issue number9
DOIs
StatePublished - Sep 2009
Externally publishedYes

Keywords

  • Inverse gas chromatography
  • N-alkane adsorption
  • N-alkane separation
  • Porous solids

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