Numéro
J. Phys. IV France
Volume 01, Numéro C5, Décembre 1991
COLLOQUE WEYL VII
International Conference on METALS IN SOLUTION
Page(s) C5-77 - C5-82
DOI http://dx.doi.org/10.1051/jp4:1991509
COLLOQUE WEYL VII
International Conference on METALS IN SOLUTION

J. Phys. IV France 01 (1991) C5-77-C5-82

DOI: 10.1051/jp4:1991509

SEPARATION OF LITHIUM ISOTOPES BY COUNTER-CURRENT FLOW OF THE COEXISTING PHASES OF A LITHIUM-AMMONIA SOLUTION

U. SCHINDEWOLF and Th. REHEIS

Institut für Physikalische Chemie und Elektrochemie der Universität Karlsruhe, Kaiserstrasse 12, D-7500 Karlsruhe, Germany


Abstract
A weak shift of the isotope concentration ratio Li6/Li7 was measured in the coexisting phases of the miscibility gap of lithium-ammonia solutions. Li6 is slightly enriched in the concentrated metallic phase (enrichment factor α = 1.009 ± 0.002). This effect can be enhanced in a counter-current column to yield any desired enrichment of the two isotopes. The counter current system and its operation were tested successfully with a sodium-potassium-ammonia solution.



© EDP Sciences 1991