Congruence of adsorption isotherm with respect to electrode potential or charge and choice of an independent electric variableстатья
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Дата последнего поиска статьи во внешних источниках: 27 мая 2015 г.
Авторы:
Frumkin A.N. ,
Damaskin B.B. ,
Survila A.A.
Журнал:
Journal of Electroanalytical Chemistry
Том:
16
Номер:
4
Год издания:
1968
Издательство:
Elsevier Sequoia
Местоположение издательства:
Switzerland
Первая страница:
493
Последняя страница:
503
DOI:
10.1016/S0022-0728(68)80140-8
Аннотация:
In a strictly thermodynamic approach to the investigation of the adsorption isotherm, the choice of an electric variable is of no fundamental importance and is determined by considerations of expediency or convenience. This is not the case, however, when the thermodynamic approach to the investigation of adsorption is supplemented by the assumption of the congruence of the adsorption isotherm with respect to the electrode potential or charge. These assumptions are only compatible provided the double-layer capacity in the supporting electrolyte solution, Co, does differ from the capacity, C', at complete surface coverage with adsorbed substance. If Co markedly exceeds C' as, for example, in the case of adsorption of aliphatic compounds on mercury, the assumption of the congruence of the adsorption isotherm with respect to the elctrode potential is in better agreement with the experimental data. Moreover, this assumption corresponds to a clear and consistent physical picture of the surface layer in the presence of adsorbed molecules of organic substance (the model of two parallel capacitors). © 1968.
Добавил в систему:
Дамаскин Борис Борисович