Separation of lithium isotope by NTOE compound was carried out with 0.
01M HCl solution. The ion exchange capacity of NTOE was 0.8 meq/g. The
separation factor, alpha = (Li-7/Li-6)(solid)/(Li-7/Li-6)(liquid) was
1.0242 by the elution chromatography. The lighter isotope, Li-6 was c
oncentrated in the liquid phase, while the heavier isotope, Li-7 was e
nriched in the solid phase.