Occlusion and ion exchange in the molten (lithium chloride+potassium chloride+alkaline-earth chloride) salt+zeolite 4A system with alkaline-earth chlorides of calcium and strontium and in the molten (lithium chloride+potassium chloride+actinide chloride) salt+zeolite 4A system with the actinide chloride of uranium

摘要: The interaction between molten salts of the type LiCl-KCl-MeCl n (Me=Ca, Sr, U; \(x_{MeCl_n } \)= to 0.45; and x KCl/x LiCl=0.69) zeolite 4A have been studied at 823 K. main interactions these are salt occlusion form salt-loaded ion exchange zeolite. An irreversible chemical reaction has observed in LiCl-KCl-UCl3+zeolite system. extent is a function concentration MeCl equal 10±1 Cl− per unit cell, (AlSiO4)12, infinite dilution. ion-exchange mole-fraction equilibrium constants (separation factors) with respect Li decreasing functions SrCl2 UCl3, but an increasing CaCl2 At dilution, they 0.9, 11.9, 13 for CaCl2, SrCl2, respectively. standard potentials −50.0, −84, −101.1 kJ·mol−1 Ca2+, Sr2+, U3+,