Title :
Study of the separation characteristics of the gallam-exchange systems
Author :
Vlasov, Viktor A. ; Vidyaev, Dmitriy G.
Author_Institution :
Institute of Physics and Technology, National Research Tomsk Polytechnic University, Tomsk Russia
Abstract :
The values of the coefficient α of separation of the alkali metals in the LiGa-NaOH, LiGa-KOH, and KGa-NaOH gallam-exchange systems were determined. The dependences of α on the temperature and concentrations of the phases involved in the exchange were studied for the LiGa-NaOH and LiGa-KOH systems. The kinetic parameters for the exchange of lithium, sodium, and potassium were obtained. The rate constants for the exchange of these elements were described by the Arrhenius equation. The corresponding values of the activation energy and preexponential factor were calculated. The separation and kinetic characteristics obtained were compared to the analogous parameters of amalgam-exchange systems. A gallam-exchange method for separating alkali metals was suggested.
Keywords :
chemical engineering; chemical exchanges; gallium compounds; lithium; potassium; reaction kinetics; separation; sodium; Arrhenius equation; activation energy; alkali metals; amalgam-exchange systems; gallam-exchange systems; kinetic characteristics; kinetic parameters; lithium exchange; phase concentrations; phase temperature; potassium exchange; preexponential factor; separation characteristics; separation coefficient; sodium exchange; Compounds; Exchange rates; Gallium; Kinetic theory; Lithium; Temperature distribution; alkali metals; gallam-exchange systems; kinetic characteristics; separation;
Conference_Titel :
Strategic Technology (IFOST), 2012 7th International Forum on
Conference_Location :
Tomsk
Print_ISBN :
978-1-4673-1772-6
DOI :
10.1109/IFOST.2012.6357780
