Concentration dependence of the separation factor of hydrogen isotopes in ternary and pseudoternary systems H-2-H-X-Y-H

The concentration dependence of the the separation factor for hydrogen isot opes in ternary and pseudoternary systems H-2 (gas) - H-X-Y-H, where X and I are different interstices in the metal matrix or intermetallic compound o r different molecular fragments, is studied. Formulas are obtained for the limiting separation factors, and new features of the concentration dependen ce as compared with binary systems are noted. It is shown that the separati on factors of hydrogen isotopes in complex systems can be calculated using the corresponding thermodynamic constants of binary systems.