Bidentate organophosphorus compound management of actinide and lanthanide extraction by changing structure and diluent parameter
- Russia Scientific Research Inst. of Inorganic Materials, Moscow (Russian Federation)
Extraction of actinides and lanthanides by bidentate organophosphorus compounds (diphosphine dioxides and carbamoylphosphine oxides) can be managed by varying the polarity of diluent DP* in the range of 2--5 and by introducing aryl groups (tolyl) into an extractant molecule which results in improved extraction ability due to bidentate coordination and effect of the anomalous aryl strengthening (AAS) of the complexes. Disappearance of AAS effect upon carbamoylphosphine oxide extraction at the lower polarity of diluent (not observed toy diphosphine dioxides) is explained by an increase of the solvate number to three and transfer from bidentate coordination to monodentate one. Due to AAS effect the above mentioned extractants can be used for deep purification of waste to remove actinides without any preliminary conditioning of solutions.
- OSTI ID:
- 178109
- Report Number(s):
- CONF-950917--; ISBN 0-7918-1219-7
- Country of Publication:
- United States
- Language:
- English
Similar Records
Effect of diluents on the extraction of actinides and nitric acid by bidentate organophosphorus compounds
Diphosphine dioxides as extraction reagents for the extraction of the actinides. The anomalous aryl strengthening effect