Published 2006 | Version v1
Journal article Metadata-only

Extraction of Am and Eu by diamides of dipicolinic acid in organic fluorine-containing solvents

Creators

  • 1. NPO Radievyj Inst. im. V.G. Khlopina, Sankt-Peterburg (Russian Federation)

Description

Extraction of Am and Eu by diamides of dipicolinic acid in organic fluorine-containing solvents is studied. It is determined that N,N'-diethyl-N,N'-di(n-tolyl)diamide of dipicolinic acid (EtTDPA) dissolves well in fluorinated solvents and its solutions permit to extract transplutonium and rare earth elements from nitric acid solutions. Extraction ability of EtTDPA in fluorinated polar solvents is higher than in CHCl3. During extraction by EtTDPA selectivity of Am/Eu separation does not depend on extractant concentration and decreases with medium acidity increasing. Am is extracted better than Eu, that permits to separate Am from Eu selectively

Abstract (Russian)

Изучена экстракция Am и Eu диамидами дипиколиновой кислоты во фторорганических растворителях. Установлено, что N,N'-диэтил-N,N'-ди(n-толил)диамид дипиколиновой кислоты (EtTDPA) хорошо растворяется во фторированных растворителях и его растворы позволяют извлекать трансплутониевые и редкоземельные элементы из азотнокислых растворов. Экстракционная способность EtTDPA во фторированных полярных растворителях выше, чем в CHCl3. При экстракции EtTDPA селективность разделения Am/Eu не зависит от концентрации экстрагента и снижается при увеличении кислотности среды. Am лучше, чем Eu, экстрагируется EtTDPA, что позволяет селективно извлекать Am

Additional details

Additional titles

Original title (Russian)
Экстракция Ам и Еу диамидами дипиколиновой кислоты во фторорганических растворителях

Publishing Information

Journal Title
Radiokhimiya
Journal Volume
48
Journal Issue
4
Journal Page Range
p. 331-334
ISSN
0033-8311
CODEN
RADKAU

INIS

Country of Publication
Russian Federation
Country of Input or Organization
Russian Federation
INIS RN
38011435
Subject category
S38: RADIATION CHEMISTRY, RADIOCHEMISTRY AND NUCLEAR CHEMISTRY; S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
AMERICIUM COMPOUNDS; AMIDES; DISTRIBUTION FUNCTIONS; EUROPIUM COMPOUNDS; NITRIC ACID; ORGANIC FLUORINE COMPOUNDS; ORGANIC SOLVENTS; SOLVENT EXTRACTION
Descriptors DEC
ACTINIDE COMPOUNDS; EXTRACTION; FUNCTIONS; HYDROGEN COMPOUNDS; INORGANIC ACIDS; INORGANIC COMPOUNDS; NITROGEN COMPOUNDS; NONAQUEOUS SOLVENTS; ORGANIC COMPOUNDS; ORGANIC HALOGEN COMPOUNDS; ORGANIC NITROGEN COMPOUNDS; OXYGEN COMPOUNDS; RARE EARTH COMPOUNDS; SEPARATION PROCESSES; SOLVENTS; TRANSPLUTONIUM COMPOUNDS; TRANSURANIUM COMPOUNDS

Optional Information

Notes
10 refs., 3 figs., 6 tabs.