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Information × Registration Number 0201U005412, 0197U016229 , R & D reports Title Calorimetric and quantum chemical study of ion exchange heats and hydration energy for exchange cations on crystal ion exchangers popup.stage_title Head Tarasevych Yurij Ivanovych, Registration Date 03-07-2001 Organization A.V Dumansky Institute of Colloid Chemistry and Water Chemistry popup.description2 The systems studied are the ion exchange processes and hydration of exchange cations at crystal ion exchangers. The aim of the project is the comprehensive study of localisation sites of exchange cations in the structure of mineral ion exchanges and the energetics of the interaction of these cations with mineral matrix and water molecules. The methods employed in the studies are the direct precise adsorption-calorimetric measurements of small heats of ion exchange and quantum chemical calculations of energetic and structural characteristics of ion exchanger crystal structure in the presence of exchange cations and hydration shell. The main results of the study are the elucidation of ion-exchange properties and memory effect observed in natural ion exchangers, in particular, in iow-siloceous (calcium) and high-siliceous (sodium) clinoptilolites. The results of the studies can be implemented in the ion exchange and environment protection technologies. "Продовження": 2.Получение и изучение свойств поверхн остно-пористых сорбентов/Тарасевич Ю.И., Бондаренко С.В., Жукова А.И., Назаренко А.В., Аксененко В.В.// Журн.физ.хим.- 1997.-Т.71,№3.-С.513-516. 3.Computational desigh of clay minerals:hydration of Mg-exchange cation located in ditrigonal cavity/ Gorb L.G., Aksenenko E.V., Adams J.W., Larson S.L., Weiss C.A., Leszczynska D./ Leszczynski J.//1998, Journ.Molecular Structure (Theochem), 425, No.2,p.129-135. Product Description popup.authors popup.nrat_date 2020-04-02 Close