Collect. Czech. Chem. Commun. 1979, 44, 1116-1125

A gas chromatographic study of the adsorption of alkanes and alkenes on graphitized thermal carbon black

Ladislav Feltl, Eva Smolková and Marcela Skurovcová

Department of Analytical Chemistry, Charles University, 128 40 Prague 2


The adsorption of C5-C10 n-alkanes and 1-alkenes on Sterling MT graphitized thermal carbon black was studied over a temperature interval from 175 to 215 °C. Specific retention volumes Vg and Vs were calculated from the experimental retention times and the differential heats of adsorption were obtained by linear regression from their temperature dependence. The standard changes in the chemical potential and entropy were further calculated for the substances studied. The precision of the measurement of the chromatographic data was checked in relation to the precision and accuracy of the calculated thermodynamic quantities. On the basis of the experimental results, the effect of the adsorbate contribution to the thermodynamic adsorption quantities was evaluated and compared with theoretical assumptions.