Anion Exchange Behavior Of Ti, Zr, Hf, Nb And Ta As Homologues Of Rf And Db In Mixed HF--Acetone Solutions

We studied in detail the sorption behavior of Ti, Zr, Hf, Nb and Ta on AG 1 anion exchange resin in HF-acetone mixed solutions as a function of organic cosolvent and acid concentrations. Anion exchange behavior was found to be strongly acetone concentration dependent. The distribution coefficients o...

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Bibliographic Details
Main Authors: Aksenov, N. V., Bozhikov, G. A., Starodub, G. Ya, Dmitriev, S. N., Filosofov, D. V., Sun Jin, Jon, Radchenko, V. I., Lebedev, N. A., Novgorodov, A. F.
Format: Conference Proceeding
Language:English
Subjects:
ACETONE
CHARGE EXCHANGE
CHEMICAL PROPERTIES
CHEMISTRY
CHROMATOGRAPHY
COMPLEXES
DISPERSIONS
DUBNIUM
ELEMENTS
FLUORIDES
FLUORINE COMPOUNDS
HAFNIUM COMPLEXES
HALIDES
HALOGEN COMPOUNDS
HOMOGENEOUS MIXTURES
HYDROFLUORIC ACID
HYDROGEN COMPOUNDS
INORGANIC ACIDS
INORGANIC COMPOUNDS
INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY
ION EXCHANGE
ISOTOPES
KETONES
METALS
MIXTURES
NONAQUEOUS SOLVENTS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
ORGANIC SOLVENTS
PETROCHEMICALS
PETROLEUM PRODUCTS
POLYMERS
RADIOCHEMISTRY
RADIOISOTOPES
RESINS
RUTHERFORDIUM
SEPARATION PROCESSES
SOLUTIONS
SOLVENTS
SORPTION
TITANIUM
TRANSACTINIDE ELEMENTS
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENTS
TRANSPLUTONIUM ELEMENTS
TRANSURANIUM ELEMENTS
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Summary:We studied in detail the sorption behavior of Ti, Zr, Hf, Nb and Ta on AG 1 anion exchange resin in HF-acetone mixed solutions as a function of organic cosolvent and acid concentrations. Anion exchange behavior was found to be strongly acetone concentration dependent. The distribution coefficients of Ti, Zr, Hf and Nb increased and those of Ta decreased with increasing content of acetone in HF solutions. With increasing HF concentration anion exchange equilibrium analysis indicated the formation of fluoride complexes of group 4 elements with charge-3 and Ta---2. For Nb the slope of-2 increased up to-5. Optimal conditions for separation of the elements using AIX chromatography were found. Group 4 elements formed MF{sub 7}{sup 3-} (M = Ti, Zr, Hf) complexes whose sorption decreased Ti>Hf>Zr in reverse order of complex stability. This fact is of particular interest for studying ion exchange behavior of Rf compared to Ti. The advantages of studying chemical properties of Rf and Db in aqueous HF solutions mixed with organic solvents are briefly discussed.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.3431425