METHOD OF OBTAINING A RADIONUCLIDE OF LUTETIUM-177 Russian patent published in 2017 - IPC G21G1/06 

FIELD: chemistry.

SUBSTANCE: in the claimed process, in the process of contact reduction, by dropwise feeding into a cell with a chloride-acetate solution of sodium amalgam and an acid solution (hydrochloric acid, acetic acid, etc.), while stirring the working solution with a magnetic stirrer, adjustment of the pH of the working solution and an increase in the duration of the contact reduction process for deeper purification of Lu from Yb. In order to reduce the loss of lutetium and the possibility of contamination of the purified solution with ytterbium, an easy-boiling organic solvent that does not miscible with the aqueous solution is poured onto the surface of the working solution prior to the introduction of the amalgam.

EFFECT: increase in the depth of purification of lutetium without a carrier from the macroquantity of ytterbium and a reduction in labour costs in the separation of ytterbium and ¹⁷⁷Lu by the contact reduction of ytterbium on sodium amalgam from an acetate-chloride solution containing irradiated in a reactor with thermal neutrons ¹⁷⁶Yb.

8 cl, 2 tbl, 1 ex