The manner null which is selected uranium (vi) it exists in the aqueous solution and/or plutonium (iv) with N and N

摘要

The invention relates to a process for the extraction of uranium vi and / or of the plutonium iv present in an aqueous solution by means of n, ndialkylamides. & br / these n, n - dialkylamides correspond to the formula: & br / (see appended drawing in bopi) & br / & & br / in which r * * 1 is a linear or branched alkyl radical of 2 to 12 carbon atoms, r and r 2 * * * * 4, which may be identical or different, are linear or branched alkyl radicals of 2 to 6 carbon atoms, r * * * * r 3 and 5, which may be identical or different, are straight or branched alkyl radicals with 1 to 6 carbon atoms, and a and b, which may be identical or different, are integers ranging from 1 to 6. & br / by way of examples, it is possible to use the n, n - di (2-ethylhexyl) ethyl - 2 dimethyl - 2,2 butyramide, n, n - di (2-ethylhexyl) hexanamide ethyl - 2 or n, n - di (2-ethylhexyl) dodecanamide ethyl - 2, for simultaneously extracting the uranium and plutonium, or to separate the uranium, plutonium, without reducing the latter.