Bismalonamides (BISMA) as new extractants for Am(III) and Eu(III) from aqueous high-level wastes

Autor:	Marta Almaraz, Margarita Segura, José-Carlos Iglesias-Sánchez, Javier de Mendoza, Pilar Prados, Jorge Sánchez-Quesada, A.G. Espartero, María Teresa Murillo
Rok vydání:	2008
Předmět:	Lanthanide NMR spectra database chemistry.chemical_compound Chlorinated solvents Aqueous solution chemistry Nitric acid Inorganic chemistry Extraction (chemistry) Actinide Physical and Theoretical Chemistry Malonic acid Nuclear chemistry
Zdroj:	Radiochimica Acta. 96:241-257
ISSN:	2193-3405 0033-8230
DOI:	10.1524/ract.2008.1485
Popis:	Bismalonamides 1–8 and bisthiomalonamides 9–13 were synthesised and studied as extracting agents for Am(III) and Eu(III) from nitric acid solutions into organic solvents. Bismalonamides 7a and 7g display higher distribution coefficients in chlorinated solvents than single malonamide DMDOHEMA, suggesting that bismalonamides could pre-organise the binding groups around the cation more efficiently. Additionally, back-extraction of Am(III) and Eu(III) from a loaded organic solution of 7g in (50:50)% vol TPH/1-octanol mixture allowed to recover 99% of the initially extracted Am(III) and Eu(III) after three times of contact with fresh 0.01 mol/L nitric acid solutions.
Databáze:	OpenAIRE
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