| abstract |
The invention relates to a process for separating uranium VI from thorium IV present in an aqueous solution by means of an N, N-dialkylamide, which can be used in particular for separating the uranium produced by irradiation of thorium. According to this process, the aqueous solution is brought into contact with an organic solvent comprising at least one N, N-dialkylamide of formula: (CF DRAWING IN BOPI) in which R ** 1 is a branched alkyl radical, R ** 2, R ** 3, R ** 4 and R ** 5 are linear or branched alkyl radicals, and a and b are integers from 1 to 6, then the aqueous solution containing Th IV is separated from the organic solvent containing U VI . By way of example, the N, N-dialkylamide used corresponds to the formula: (CF DRAWING IN BOPI) |