Published 2008 | Version v1
Journal article Metadata-only

Interaction of zirconium with tributylphosphate during extraction from nitric acid solutions

Creators

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

Description

The extraction of zirconium with tributyl phosphate (TBP) in organic diluent was studied. The dependence of the distribution ratio of Zr on the TBP concentration in the organic phase and also the IR spectra of Zr-TBP extracts obtained at different concentrations of Zr and HNO3 in the aqueous phase show that at least two kinds of extractable zirconium nitrate solvates with TBP are formed in extraction with 30% TBP. The solvate formed at HNO3 concentration not exceeding 3 M contains water molecules. The extractable species formed at higher nitric acid concentration in the aqueous phase is anhydrous zirconium nitrate disolvate with TBP

Abstract (Russian)

Изучена экстракция циркония трибутилфосфатом. Полученные зависимости коэффициентов распределения Zr от концентрации ТБФ, а также ИК спектры органических растворов Zr указывают на присутствие в органической фазе 30%-ного ТБФ по крайней мере двух сольватных форм Zr с ТБФ. Первая форма образуется при концентрации HNO3 не более 3 моль/л и имеет в своем составе гидроксогруппы. Вторая форма образуется при более высокой концентрации кислоты и представляет собой безводный дисольват нитрата Zr с ТБФ

Additional details

Additional titles

Original title (Russian)
Взаимодействие циркония с трибутилфосфатом при экстракции из азотнокислых растворов

Publishing Information

Journal Title
Radiokhimiya
Journal Volume
50
Journal Issue
3
Journal Page Range
p. 221-224
ISSN
0033-8311
CODEN
RADKAU

INIS

Country of Publication
Russian Federation
Country of Input or Organization
Russian Federation
INIS RN
39117675
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
CHEMICAL COMPOSITION; CONCENTRATION RATIO; DISTRIBUTION FUNCTIONS; INFRARED SPECTRA; NITRIC ACID; SOLVATION; SOLVENT EXTRACTION; TBP; ZIRCONIUM COMPLEXES
Descriptors DEC
BUTYL PHOSPHATES; COMPLEXES; DIMENSIONLESS NUMBERS; ESTERS; EXTRACTION; FUNCTIONS; HYDROGEN COMPOUNDS; INORGANIC ACIDS; INORGANIC COMPOUNDS; NITROGEN COMPOUNDS; ORGANIC COMPOUNDS; ORGANIC PHOSPHORUS COMPOUNDS; OXYGEN COMPOUNDS; PHOSPHORIC ACID ESTERS; SEPARATION PROCESSES; SPECTRA; TRANSITION ELEMENT COMPLEXES

Optional Information

Notes
14 refs., 6 figs., 1 tab.