Summary
Retention volumes (Henry constants) and differential molar change of internal energy\( - \Delta \bar U_1\) at low surface coverages on hydrogen-treated graphitized thermal carbon black (HTGTCG) for aldehydes, ketones and alcohols have been determined. An additional hydrogen treatment of graphitized thermal carbon black at 1000°C (GTCB) was undertaken to remove chemical inhomogeneity of the surface. After this treatment the peaks of oxygenated hydrocarbon derivatives became more symmetrical. Reduction of retention volumes after this treatment was observed only for substances with short hydrocarbon chains. The dependence during adsorption\( - \Delta \bar U_1\) on the structure of, and number of carbon atoms in, aldehydes, ketones and alcohols has been investigated. The Kovats' indices for the chromatography on HTGTCB were obtained and used for identification.
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Kalashnikova, E.V., Kiselev, A.V., Makogon, A.M. et al. Adsorption of molecules of different structure on graphitized thermal carbon black IV. Gas chromatographic investigation of adsorption of aldehydes, ketones and alcohols on hydrogen-treated graphitized thermal carbon black. Chromatographia 8, 399–403 (1975). https://doi.org/10.1007/BF02269088
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DOI: https://doi.org/10.1007/BF02269088