Separation and Purification of Rare Earth Elements by Fractional Crystallization. IV. Purifications of Cerium Group Elements by Fractional Crystallizations of Double Salts of Nitrates (in Japanese)
Journal Article
·
· Kogyo Kagaku Zasshi
By fractional crystallizations of double salts of nitrates, binary mixtures of cerium-group elemen were purified. The samples of binary mixtures used in these experiments were ohtained by the fractional crystallization of double magnesium nitrate. In the purification of La and Pr from La- Pr mixture, the fractional crystallization of double ammonium nitrate was carried out using 10% HNO₃ solution. Ce was added as the separating element. The fractional crystallization of double manganese nitrate was used for the purification of Nd from Pr-Nd mixture. In this case, concentrated HNO/sub 3/ solution was chosen as the solvent. Sm was purified from Sm-- SIGMA STAY! mixture by fractional crystallization of double bismuth nitrate, using 30% HNO₃ solution. Pure oxides of La, Pr, Nd, and Sm were obtained. The conditions of separation of cerium-group elements were known from the behavior of elements, and distribution charts of elements were obtained during the process of each fractional crystallization. (auth)
- Research Organization:
- Osaka Univ.
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-18-008450
- OSTI ID:
- 4839949
- Journal Information:
- Kogyo Kagaku Zasshi, Journal Name: Kogyo Kagaku Zasshi Journal Issue: 6 Vol. 66; ISSN 0023-2734
- Country of Publication:
- Country unknown/Code not available
- Language:
- Japanese
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Related Subjects
AMMONIUM COMPOUNDS
BISMUTH NITRATES
CARRIERS
CERIUM
CERIUM NITRATES
CHEMISTRY
CRYSTALLIZATION
DIAGRAMS
DISTRIBUTION
EFFICIENCY
IMPURITIES
LANTHANUM
LANTHANUM NITRATES
LANTHANUM OXIDES
MAGNESIUM NITRATES
MANGANESE NITRATES
MIXING
NEODYMIUM
NEODYMIUM NITRATES
NEODYMIUM OXIDES
NITRATES
NITRIC ACID
OPERATION
PERFORMANCE
PRASEODYMIUM
PRASEODYMIUM NITRATES
PRASEODYMIUM OXIDES
PREPARATION
QUANTITY RATIO
RARE EARTHS
REFINING
SAMARIUM
SAMARIUM NITRATES
SAMARIUM OXIDES
SEPARATION PROCESSES
SOLUTIONS
TRACE AMOUNTS
WATER
YTTRIUM
YTTRIUM NITRATES
BISMUTH NITRATES
CARRIERS
CERIUM
CERIUM NITRATES
CHEMISTRY
CRYSTALLIZATION
DIAGRAMS
DISTRIBUTION
EFFICIENCY
IMPURITIES
LANTHANUM
LANTHANUM NITRATES
LANTHANUM OXIDES
MAGNESIUM NITRATES
MANGANESE NITRATES
MIXING
NEODYMIUM
NEODYMIUM NITRATES
NEODYMIUM OXIDES
NITRATES
NITRIC ACID
OPERATION
PERFORMANCE
PRASEODYMIUM
PRASEODYMIUM NITRATES
PRASEODYMIUM OXIDES
PREPARATION
QUANTITY RATIO
RARE EARTHS
REFINING
SAMARIUM
SAMARIUM NITRATES
SAMARIUM OXIDES
SEPARATION PROCESSES
SOLUTIONS
TRACE AMOUNTS
WATER
YTTRIUM
YTTRIUM NITRATES