Estimation of parameters characterizing the adsorption of sodium,potassium, and rubidium cryptates at the mercury electrode/solution interface |
| |
Authors: | E?V?Stenina Email author" target="_blank">L?N?SviridovaEmail author |
| |
Institution: | (1) Lomonosov Moscow State University, Vorob evy Gory 1, Moscow, 119992, Russia |
| |
Abstract: | The adsorption of complexes formed by sodium, potassium, and rubidium cations with macrobicyclic ligand (kryptofix 222 with C18H36N2O6 composition) is studied as a function of the ligand concentration on a stationary mercury drop in 0.1 M solutions of corresponding sulfates and chlorides by using the differential capacitance technique. Based on the model of two parallel capacitors supplemented by the Frumkin isotherm, the adsorption parameters of studied cryptates are estimated by using the regression analysis technique. Differential capacitance curves calculated with the parameters found are compared with experimental data. The comparison of the found adsorption parameters makes it possible to reveal the effects of the nature of included cations and specifically adsorbed supporting-electrolyte anions on the adsorption behavior of cryptates under study.__________Translated from Elektrokhimiya, Vol. 41, No. 4, 2005, pp. 475–481.Original Russian Text Copyright © 2005 by Stenina, Sviridova. |
| |
Keywords: | adsorption kryptofix 222 cryptates adsorption parameters regression technique simulation |
本文献已被 SpringerLink 等数据库收录! |
|