Applied Sciences (Apr 2019)

Separation of N–C<sub>5</sub>H<sub>12</sub>–C<sub>9</sub>H<sub>20</sub> Paraffins Using Boehmite by Inverse Gas Chromatography

  • José L. Contreras-Larios,
  • Antonia Infantes-Molina,
  • Luís A. Negrete-Melo,
  • Juan M. Labadie-Suárez,
  • Hernani T. Yee-Madeira,
  • Miguel A. Autie-Pérez,
  • Enrique Rodríguez-Castellón

DOI
https://doi.org/10.3390/app9091810
Journal volume & issue
Vol. 9, no. 9
p. 1810

Abstract

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The separation of a mixture of C5−C9 n-paraffins was achieved by Inverse Gas Chromatography (IGC) by using boehmite; AlO(OH), in a packed column with short exposure times and temperatures; from 45 °C to 52 °C. The boehmite was characterized by XRD; ATG; SEM; IR spectroscopy and N2 adsorption. The material exhibited a low crystalline boehmite (AlOOH) structure and presented high hydration (pseudoboehmite). The reverse gas chromatography measurements showed that the elution temperatures of the C5−C9 n-paraffins were low compared with those obtained for other adsorbents. The differential heat of adsorption values ensures the satisfactory separation of the components in the C5−C9 mixture under suitable chromatographic conditions.

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