Abstract
N, N, N`, N`-tetraalkyl 2-alkyl propane 1,3-diamides (RR`NCO){sub 2} CHR were investigated in view to separate the actinides contained in nuclear wastes. These extractants can be considered as an alternative to CMPO (octyl(phenyl)-N, N-diisobutylcarbamoyl methyl phosphine oxide) used in the TRUEX process [1]. Unlike organophosphorus molecules, amides and their degradation products are completely incinerable. These facts implicate minimum production of secondary wastes after the degraded solvent incineration. N, N`-dimethyl N, N`-dibutyl tetradecyl malonamide (DMDBTDMA) was selected. This molecule is usable in aliphatic diluents, is able to extract trivalent actinides. Americium extraction is faster than iron extraction, this phenomenon increases the interest of these solvents in nuclear industry. We will present extraction equilibria of UO{sub 2}{sup 2+}, Pu{sup 4+}, and Am{sup 3+} from nitrate solutions. Researches are performed to point out the main features of complexes (amidecation) providing extraction (different species, stoechiometries, part of acidity). Technics used are spectrophotometry (IR, UV-visible), distribution ratios measurements and saturation of the organic phase. (author). 6 figs.
Citation Formats
Nigond, L, Musikas, C, and Cuillerdier, C.
Extraction chemistry of actinide cations by N,N,N`,N`-tetraalkyl-2 alkyl propane-1,3 diamides.
France: N. p.,
1993.
Web.
Nigond, L, Musikas, C, & Cuillerdier, C.
Extraction chemistry of actinide cations by N,N,N`,N`-tetraalkyl-2 alkyl propane-1,3 diamides.
France.
Nigond, L, Musikas, C, and Cuillerdier, C.
1993.
"Extraction chemistry of actinide cations by N,N,N`,N`-tetraalkyl-2 alkyl propane-1,3 diamides."
France.
@misc{etde_10137393,
title = {Extraction chemistry of actinide cations by N,N,N`,N`-tetraalkyl-2 alkyl propane-1,3 diamides}
author = {Nigond, L, Musikas, C, and Cuillerdier, C}
abstractNote = {N, N, N`, N`-tetraalkyl 2-alkyl propane 1,3-diamides (RR`NCO){sub 2} CHR were investigated in view to separate the actinides contained in nuclear wastes. These extractants can be considered as an alternative to CMPO (octyl(phenyl)-N, N-diisobutylcarbamoyl methyl phosphine oxide) used in the TRUEX process [1]. Unlike organophosphorus molecules, amides and their degradation products are completely incinerable. These facts implicate minimum production of secondary wastes after the degraded solvent incineration. N, N`-dimethyl N, N`-dibutyl tetradecyl malonamide (DMDBTDMA) was selected. This molecule is usable in aliphatic diluents, is able to extract trivalent actinides. Americium extraction is faster than iron extraction, this phenomenon increases the interest of these solvents in nuclear industry. We will present extraction equilibria of UO{sub 2}{sup 2+}, Pu{sup 4+}, and Am{sup 3+} from nitrate solutions. Researches are performed to point out the main features of complexes (amidecation) providing extraction (different species, stoechiometries, part of acidity). Technics used are spectrophotometry (IR, UV-visible), distribution ratios measurements and saturation of the organic phase. (author). 6 figs.}
place = {France}
year = {1993}
month = {Dec}
}
title = {Extraction chemistry of actinide cations by N,N,N`,N`-tetraalkyl-2 alkyl propane-1,3 diamides}
author = {Nigond, L, Musikas, C, and Cuillerdier, C}
abstractNote = {N, N, N`, N`-tetraalkyl 2-alkyl propane 1,3-diamides (RR`NCO){sub 2} CHR were investigated in view to separate the actinides contained in nuclear wastes. These extractants can be considered as an alternative to CMPO (octyl(phenyl)-N, N-diisobutylcarbamoyl methyl phosphine oxide) used in the TRUEX process [1]. Unlike organophosphorus molecules, amides and their degradation products are completely incinerable. These facts implicate minimum production of secondary wastes after the degraded solvent incineration. N, N`-dimethyl N, N`-dibutyl tetradecyl malonamide (DMDBTDMA) was selected. This molecule is usable in aliphatic diluents, is able to extract trivalent actinides. Americium extraction is faster than iron extraction, this phenomenon increases the interest of these solvents in nuclear industry. We will present extraction equilibria of UO{sub 2}{sup 2+}, Pu{sup 4+}, and Am{sup 3+} from nitrate solutions. Researches are performed to point out the main features of complexes (amidecation) providing extraction (different species, stoechiometries, part of acidity). Technics used are spectrophotometry (IR, UV-visible), distribution ratios measurements and saturation of the organic phase. (author). 6 figs.}
place = {France}
year = {1993}
month = {Dec}
}