Elsevier

Journal of Chromatography A

Volume 214, Issue 3, 2 October 1981, Pages 269-282
Journal of Chromatography A

Gas-solid chromatography of ethane on activated carbon at 25 C

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Abstract

The adsorption and diffusion of ethane in a chromatographic column packed with activated carbon were investigated for different concentrations and flow-rates. The adsorption isotherm of ethane can be represented by a three-parameter equation. The experimental data and theoretical asymptotic concentration profiles agree at high inlet concentrations and deviate at low inlet concentrations. The longitudinal diffusion coefficients were extracted from fitting the experimental data. Analytic criteria presented here for achieving an asymptotic concentration profile predict that the best result occurs at the flow-rate corresponding to the minimum of the height equivalent to a theoretical plate.

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