Abstract
Reversed-flow gas chromatography is a dynamic method useful for measuring adsorption isotherms at low concentrations. This method based on the mass-balance equations is useful for evaluating the adsorption isotherms because it gives model-independent results. The method is described and evaluated for the determination of the adsorption isotherms of two components in gas–solid systems. The following adsorbents were included in the study: iron oxide, zinc oxide, chromium oxide, lead oxide and titanium oxide. The adsorption of two significant aromatic hydrocarbons (benzene and toluene) was investigated in the presence of an inorganic gas (nitrogen dioxide).
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