Abstract
In connection with the task of separating 177Lu from Yb macroquantities, the formation of gel-like salts (“third phase”), which significantly reduces the efficiency of chromatography in the recovery of REE carrier-free radionuclides, was studied. The formation of polymeric gel-like salts of ytterbium di(2-ethylhexyl)phosphate (“third phase”) under dynamic conditions in the Yb(NO3)3–HNO3–HDEHP system (sorbent LN Resin) was demonstrated using Fourier IR spectroscopy. The experiment consisted of a layer-by-layer analysis of the sorbent; the spectra of the samples were compared with the spectra of a specially prepared reference salt sample.
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Funding
This work was supported by the Russian Foundation for Basic Research (fundamental research project no. 18-48-730040 “Investigation of the regularities of the extraction and extraction chromatography separation of ytterbium and lutetium from mineral acid solutions using organophosphorus extractants”).
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Translated from Radiokhimiya, No. 5, pp. 481–487, October, 2022 https://doi.org/10.31857/S0033831122050069
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Bobrovskaya, K.S., Kuznetsov, R.A. & Fomin, A.N. The Formation of a Third Phase in Ytterbium Extraction Chromatography Columns with HDEHP. Radiochemistry 64, 625–631 (2022). https://doi.org/10.1134/S106636222205006X
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DOI: https://doi.org/10.1134/S106636222205006X