Cation Exchange Behavior of Lanthanides and Trivalent Actinides in Ethanol-Hydrochloric Acid

摘要

Cation exchange in various organic solvent-hydrochloric acid media was studied for separating microgram levels of fission products from trivalent actinides. Ethanol provided the largest group separation factors. With either conventional or macroporous resins, equilibrations were too slow for useful column operation. The slow equilibration was caused by slow diffusion of the inorganic ions within the resin beads. A pellicular ion exchange resin, consisting of silica beads with a thin shell of resin, gave rapid and complete lanthanide-trivalent actinide separations.