Published 2002 | Version v1
Journal article Metadata-only

Extraction properties of zirconium salt of dibutylphosphoric acid in the case of TPE and REE extraction from nitric acid solutions

Creators

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

Description

On the basis of extraction data and IR spectra the structure id proposed of zirconium salt of dibutylphosphoric acid (ZS DBPA) and so structure of complexes forming in organic phase during extraction of REE by ZS DBPA in dependence on acidity, ZS DBPA concentration and extractant saturation by metal. By the method of mathematical modeling the contribution of different mechanisms of extraction for all rare earths and so Am and Cm is exposed. TBP presence in ZS DBPA independently on diluent during Ce, Eu and Am extraction decreases distribution coefficients of elements, but increases extractant capacity by REE to the extent sufficiently being more than element extraction by TBP

Abstract (Russian)

На основании экстракционных данных и ИК спектров предложена структура циркониевой соли дибутилфосфорной кислоты (ЦС ДБФК), а также структуры комплексов, образующихся в органической фазе, при экстракции РЗЭ ЦС ДБФК и насыщения экстрагента металлом. Методом математического моделирования выявлен вклад различных механизмов экстракции для всех РЗЭ, а также Am и Cm. Присутствие ТБФ в ЦС ДБФК независимо от разбавителя при экстракции Ce, Eu и Am понижает коэффициенты распределения элементов, но увеличивает емкость экстрагента по РЗЭ на величину, существенно превосходящую экстракцию элементов самим ТБФ

Additional details

Additional titles

Original title (Russian)
Экстракционные свойства циркониевой соли дибутилфосфорной кислоты при извлечении TPEh и RZEh из азотнокислых растворов

Publishing Information

Journal Title
Radiokhimiya
Journal Volume
44
Journal Issue
5
Journal Page Range
p. 428-433
ISSN
0033-8311
CODEN
RADKAU

INIS

Country of Publication
Russian Federation
Country of Input or Organization
Russian Federation
INIS RN
34085430
Subject category
S38: RADIATION CHEMISTRY, RADIOCHEMISTRY AND NUCLEAR CHEMISTRY; S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
ACTINIDE COMPLEXES; CHEMICAL REACTION KINETICS; CONCENTRATION RATIO; DBP; DISTRIBUTION FUNCTIONS; MATHEMATICAL MODELS; NITRIC ACID; PH VALUE; RARE EARTH COMPLEXES; SOLVENT EXTRACTION; ZIRCONIUM COMPLEXES
Descriptors DEC
BUTYL PHOSPHATES; COMPLEXES; ESTERS; EXTRACTION; FUNCTIONS; HYDROGEN COMPOUNDS; INORGANIC ACIDS; INORGANIC COMPOUNDS; KINETICS; NITROGEN COMPOUNDS; ORGANIC COMPOUNDS; ORGANIC PHOSPHORUS COMPOUNDS; OXYGEN COMPOUNDS; PHOSPHORIC ACID ESTERS; REACTION KINETICS; SEPARATION PROCESSES; TRANSITION ELEMENT COMPLEXES

Optional Information

Notes
10 refs.; 2 tabs.; 11 figs.