Radiochemical Separation of Group 5 Elements. Model Experiments for Investigation of Dubnium Chemical Behaviour

Chemical behaviour of group 5 elements in the aqueous hydrofluoric acid solutions was studied. The radiochemical method for the cation exchange separation of Nb (Pa) and Ta from Zr, Hf and lanthanides is presented. The developed scheme allows excluding of the presence of SF heavy actinides in fracti...

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Bibliographic Details
Main Authors: Tereshatov, E E, Bruchertseifer, H, Bozhikov, G A, Aksenov, N V, Starodub, G Ya, Vostokin, G K, Shishkin, S V, Dmitriev, S N, Gaggeler, H W
Format: Conference Proceeding
Language:English
Subjects:
DUBNIUM
FLUORIDES
HEAVY NUCLEI
HYDROFLUORIC ACID
INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY
ION EXCHANGE
ISOTOPE SEPARATION
NIOBIUM
PROTACTINIUM
RADIOCHEMISTRY
RARE EARTHS
SOLUTIONS
STABILITY
TANTALUM
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Summary:Chemical behaviour of group 5 elements in the aqueous hydrofluoric acid solutions was studied. The radiochemical method for the cation exchange separation of Nb (Pa) and Ta from Zr, Hf and lanthanides is presented. The developed scheme allows excluding of the presence of SF heavy actinides in fractions of separated elements. On the basis of the data of the present work, it is possible to suggest the following order of the stability of the fluoride complexes of group 4 and 5 elements: Nb approx Pa > Zr > Hf > Ta. The order of the complex formation is in agreement with theoretical predictions. This analytical procedure can be used in future heavy nuclei synthesis experiments for the separation of dubnium (Db) from other reactions products and for its chemical identification.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.2746601