Computer simulation of kinetic of ion exchange accompanied by complex formation in ionitesстатья
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Дата последнего поиска статьи во внешних источниках: 19 декабря 2017 г.
Аннотация:The kinetics of ion exchange accompanied by the formation of weakly dissociating compounds between counter ions and fixed ionite exchange groups has been studied by computer simulation of ion-exchange processes at different ratios of the individual diffusion coefficents and in the case of convex and concave exchange isotherns. The results show that exchange in ionites filled initially with less mobile ions is faster in the case of a convex than in the case of a concave isotherm. The distribution of counter ions and co-ions with particle radius is dependent on the relation between the equilibrium and kinetic parameters. The simulated ion distribution curves obtained for the exchange kinetics in carboxyl and vinylpyridinecarboxyl ionites are similar to the experimental ones.