Plutonium Third Phase Formation in the 30% TBP/Nitric Acid/Hydrogenated Polypropylene Tetramer System

Autor:	Artem V. Gelis, J. Plaue, Kenneth R. Czerwinski
Rok vydání:	2006
Předmět:	Dodecane General Chemical Engineering Inorganic chemistry Aqueous two-phase system Plutonyl General Chemistry Diluent Metal chemistry.chemical_compound Tetramer chemistry Third phase Nitric acid visual_art visual_art.visual_art_medium Nuclear chemistry
Zdroj:	Solvent Extraction and Ion Exchange. 24:271-282
ISSN:	1532-2262 0736-6299
Popis:	A study on plutonium third phase formation in 30% TBP/nitric acid/hydrogenated polypropylene tetramer (HPT) was performed. Characterization studies of HPT indicate its composition to be a mixture of many highly branched alkanes with a volatility close to n‐undecane. This composition results in about a factor of two better resistance to Pu(IV) third phase formation than dodecane. At 7 M nitric acid in the aqueous phase, the presence of Pu(VI) was observed to substantially reduce the organic phase metal concentration necessary to induce phase splitting in both diluents. Spectroscopic investigation of mixed valence systems also suggest a prominent role for Pu(VI) in the formation of the dense organic phase. Accumulation of Pu(VI) in the heavy phase, as well as certain spectral features, suggest that Pu(VI) is forming a different species, possibly a plutonyl trinitrato, with a strong tendency to form third phase.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a9925f66118a5ac3fff291b2f773160c https://doi.org/10.1080/07366290600646814 Zobrazit plný text záznamu