Fractionation of lithium isotopes in cation-exchange chromatography

Journal Article · · Separation Science and Technology; (United States)

DOI:https://doi.org/10.1080/01496399108050537· OSTI ID:5697889

Oi, Takao; Kawada, Kazuhiko; Kakihana, Hidetake ^[1]; Hosoe, Morikazu ^[2]

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1. Sophia Univ., Tokyo (Japan)
2. National Defense Academy, Kanagawa (Japan)

Various methods for lithium isotope separation have been developed, and their applicability to large-scale enriched lithium isotope production has been assessed. Ion-exchange chromatography is one such method. Cation-exchange chromatography of lithium was carried out to investigate the lithium isotope effect in aqueous ion-exchange systems. The heavier isotope. {sup 7}Li, was preferentially fractionated into the resin phase in every experiment conducted, and this result is consistent with the results of previous work. The value of the separation factor was 1.00089-1.00171 at 25C. A comparison of lithium isotope effect with those of potassium and rubidium indicated that the isotope effect originating from hydration is larger than the effect due to phase change for lithium, while the opposite is the case with potassium and rubidium.

• OSTI ID: 5697889
• Journal Information: Separation Science and Technology; (United States), Journal Name: Separation Science and Technology; (United States) Vol. 26:10-11; ISSN SSTED; ISSN 0149-6395
• Country of Publication: United States
• Language: English

Related Subjects

38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400703* -- Radiochemistry & Nuclear Chemistry-- Radioisotope Production
ALKALI METAL ISOTOPES
ALKALI METALS
CHROMATOGRAPHY
DATA
ELEMENTS
EXPERIMENTAL DATA
FRACTIONATION
INFORMATION
ION EXCHANGE CHROMATOGRAPHY
ION EXCHANGE MATERIALS
ISOTOPE EFFECTS
ISOTOPE SEPARATION
ISOTOPES
LIGHT NUCLEI
LITHIUM 6
LITHIUM 7
LITHIUM ISOTOPES
MATERIALS
METALS
NUCLEI
NUMERICAL DATA
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
PHASE TRANSFORMATIONS
POLYMERS
POTASSIUM
RESINS
RUBIDIUM
SEPARATION PROCESSES
STABLE ISOTOPES