Design and Development of Selective Extractants for An/Ln Separations

Robert T. Paine

关键词: ACTINIDES;    CHEMISTRY;    DESIGN;    FISSION PRODUCTS;    PERFORMANCE;    PYRIDINE;    RADIATIONS;    RARE EARTHS;    STABILITY;    SYNTHESIS;    TRAINING Advanced Fuel Cycle Iniative (AFCI) Spent Fuel Separations;   

DOI  :  10.2172/968439
RP-ID  :  DOE/ID14730-1
PID  :  OSTI ID: 968439
Others  :  TRN: US1001101

学科分类：核能源与工程

美国|英语

来源: SciTech Connect

【 摘 要 】

This study has succeeded in further developing phosphinoylmethyl pyridine compounds as selective recognition and separations agents for trivalent lanthanide and actinide ions present in nuclear materials. The parameters for efficient separations have been further elucidated and factors important to further development have been identified. Further development will lead to optimal extractant design for effective actinide ion partitioning under process practical conditions. The primary objective of the project involved the design, synthesis, and characterization of the extraction performance of 2,6-bis(phosphinomethyl)pyridine N,P,P{prime}-trioxides (NOPOPO) as potential reagents for the separation of Am, Cm, and fission product lanthanides from other transuranics and fission products and for acting as a separations 'platform' for the mutual separation of Am/Cm from the lanthanides. The secondary but critical objective of the project focused on the characterization of aqueous acid and radiation stability of NOPOPO ligands. Further, the project served as a interdisciplinary training vehicle for new, young investigators in actinide separations chemistry.