ASYMMETRICAL N,N-DIALKYLAMIDES, IN PARTICULAR USED FOR SEPARATION OF URANIUM(VI) FROM PLUTONIUM(IV), THEIR SYNTHESIS AND APPLICATION Russian patent published in 2021 - IPC C07C233/05 C07C231/02 C22B3/26 C22B60/02 C22B60/04 G21C19/46 G21F9/06 

FIELD: nuclear power industry.

SUBSTANCE: invention relates to N,N-dialkylamides of the formula (I) that can be used in recycling of spent nuclear fuel. In the formula (I), R1 is a linear alkyl group having from 1 to 4 carbon atoms; R2 is a linear alkyl group having from 1 to 10 carbon atoms; R3 is a linear or branched alkyl group having from 6 to 15 carbon atoms; provided that R3 differs from n-octile, n-decile, n-dodecyl, 2-ethylhexyl and 2-ethyloctile group, when R1 is n-butyl group, and R2 is ethyl group. The invention also relates to a method for producing the specified N,N-dialkylamides, their use for the extraction of uranium(VI) and/or plutonium(IV) from an acidic aqueous solution or for the complete or partial separation of uranium(VI) from plutonium(IV) from the acidic aqueous solution, as well as to a method for processing an aqueous solution formed during the dissolution of spent nuclear fuel in nitric acid.

EFFECT: obtaining a compound for recycling spent nuclear fuel.

(I)

20 cl, 1 tbl, 1 dwg