Extraction of elements in oxygen-containing anion form from alkaline solutions

Using the radioactive isotopes the extraction of manganese (7) from solutions of caustic alkalis with TBP and TBA at 5-25 deg C in the presence of hypohalogenite-ions and catalytic amounts of copper, nickel or cobalt ions, is studied. The constants of alkali metal permanganate extraction with TBP decrease in the series of Li, Na, K, Rb, Cs: 0.12; 0.054; 0.032; 0.023; 0.017. MeMnOsub(4)xSsub(n) solvate transfer into organic phase, at that, for TBP n=4+-0.3, for TBA n=7-8. In the organic phase the salts are considerably dissociated. The thermodynamic functions for the extraction and dissociation of NaMnO4 in TBP are determined