In uence of irradiation on the stability of extraction mixtures based on methyltri-n-octylammonium carbonate

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Abstract

The radiation-thermal stability of extraction mixtures based on methyltrioctylammonium carbonate has been studied. The volumes and maximum rate of release of gaseous products at atmospheric and elevated pressures have been determined. It is shown that exothermic processes do not occur in the studied mixtures under experimental conditions. Irradiation up to a dose of 1 MGy has little e ect on the density, viscosity, and surface tension of mixtures, but signi cantly reduces the rate of phase separation. The distribution coe cients of Am(III) in the system of 50% MTOA carbonate in toluene are practically independent of the absorbed dose; however, irradiation has a noticeable e ect on the composition of the extractable americium complexes. The results of the study of extraction systems showed their high radiation-thermal stability.

About the authors

A. S. Obedkov

Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences;Mendeleev University of Chemical Technology of Russia

I. A. Bolshakova

Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences;Mendeleev University of Chemical Technology of Russia

E. V. Belova

Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences

Email: bl174@bk.ru

G. V. Kostikova

Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences

O. A. Raitman

Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences;Mendeleev University of Chemical Technology of Russia

S. I. Stepanov

Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences;Mendeleev University of Chemical Technology of Russia

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