1982
DOI: 10.1080/01496398208060649
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Selected Alkyl(phenyl)-N,N-dialkylcarbamoylmethylphosphine Oxides as Extractants for Am(III) from Nitric Acid Media

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Cited by 195 publications
(49 citation statements)
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“…The Np( V )-TBP extraction reaction can be written NpOi<aJ+NOa<aJ+ TBP<ol =Np02(NO,)TBP<ol. ( 2) Beside the hydrogen bonding between CMPO and TBP, the excess TBP extracts the remaining Np(V), and consequently increases the distribution ratio. However we also believe that when the TBP concentration increases above 0.5 M, self-association of TBP significantly takes place by inter molecular hydrogen bonding of the P=O group in the TBP through extracted H20 and HNO,.…”
Section: Methodsmentioning
confidence: 99%
“…The Np( V )-TBP extraction reaction can be written NpOi<aJ+NOa<aJ+ TBP<ol =Np02(NO,)TBP<ol. ( 2) Beside the hydrogen bonding between CMPO and TBP, the excess TBP extracts the remaining Np(V), and consequently increases the distribution ratio. However we also believe that when the TBP concentration increases above 0.5 M, self-association of TBP significantly takes place by inter molecular hydrogen bonding of the P=O group in the TBP through extracted H20 and HNO,.…”
Section: Methodsmentioning
confidence: 99%
“…Compounds bearing numerous residues at the nitrogen and phosphorus, in a variety of combinations, has been synthesized. 24, 29 Horwitz et. al.…”
Section: Technical Objectivesmentioning
confidence: 99%
“…Moreover, the phenyl groups adjacent to the P=O group provide the steric hindrance that was found to be one of the factors responsible for higher selectivity for Am(III) over Eu (III) for some CMPO derivatives. 29 The An(III)/Ln(III) separation, is still one of the key problems facing any new partitioning and transmutation nuclear waste management strategy. Problems are particularly posed by the identical oxidation states and the approximately equal ionic radii of the metals.…”
Section: Technical Objectivesmentioning
confidence: 99%
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“…For instance, many different structures of monoamides, diamides, carbamoylmethylphosphine oxides, and diphosphine dioxides have been developed particularly in the last three decades [1][2][3][4][5][6]. However, there are few reports concerning extractants with different central frames [7][8], because of difficulties in their organic synthesis.…”
Section: Introductionmentioning
confidence: 99%