FUNDAMENTAL STUDIES ON THE ION EXCHANGE SEPARATION OF ISOTOPES. IV. SEPARATION FACTOR OF LITHIUM ISOTOPES USING ION EXCHANGER (in Japanese)
The ion exchange separatuon factors of lithium isotopes in LiCl and LiOH solutions were determined with differently cross-linked sulfonated styrene- divinylbenzene copolymers and a synthetic inorganic ion exchanger, lonite C, (zurconuum phosphate type). The isotopic ratios of lithuum were measured by a mass spectrometer using the thermionic method. The highest separation factor, l.022, was obtained for the system of 0.1m LiOH in 20% acetoneH/sub 2/O mixture using lonite C. From experimental data, the equilibrium constant of the following isotope exchange reaction in solution was estimated tentatively as 1.04- Li/sup 2+/ + Li/sup 6/OH in equilibrium Li/sup 6+ + Li/sup 7/OH. Synthetic inorganic ion exchange Ionite C, gave higher separation factors than the organic ones. This fact can be explained by the following isotope exchange reaction in the exchanger phase: Li/sup 7/E + ELi /sup 6/ in equilibrium Li/sup 6/ plus or minus ELi/sup 7/ and its equilibrium constant of 0.992. The highly cross-linked ion exchange resins and the addition of ethanol or acetone were also effective to obtain the higher separatuon factors. (auth)
- Research Organization:
- Tokyo Inst. of Tech.
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-16-005636
- OSTI ID:
- 4822093
- Journal Information:
- J. At. Energy Soc. Japan, Journal Name: J. At. Energy Soc. Japan Vol. Vol: 3
- Country of Publication:
- Country unknown/Code not available
- Language:
- Japanese
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