Adsorption of complexes of cations of alkali metals with a macrocyclic ligand (Kryptofix® 222) on a mercury electrodeстатья
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Аннотация:Adsorption of complexes of alkali metal cations with a macrocyclic ligand (C18H36N2O6, Kryptofix® 222) is studied as a function of their concentration by measuring the differential capacitance on a stationary mercury drop. The complexes (kryptates) possess a high adsorption capability. The adsorption parameters of sodium kryptate are found within a model of two parallel capacitors complemented by a Frumkin adsorption isotherm. Curves of the differential capacitance and the electrocapillary curves, calculated from these parameters, nicely conform to the experimental data obtained in this work and to the literature data.