Extraction de l'uranium hexavalent de milieux nitriques par des melanges de nitrate de trilaurylammonium et d'acides carboxyliques en solution dans le t-butylbenzene

Autor:	G. Koehly, C. Madic
Rok vydání:	1976
Předmět:	Partition coefficient chemistry.chemical_classification chemistry.chemical_compound Polymers and Plastics Nitrate chemistry Stereochemistry Carboxylic acid Extraction (chemistry) Materials Chemistry Cationic polymerization Amine gas treating Nuclear chemistry
Zdroj:	Journal of Inorganic and Nuclear Chemistry. 38:2081-2084
ISSN:	0022-1902
DOI:	10.1016/0022-1902(76)80473-3
Popis:	The presence of capric, α-bromocapric or 3-fluorobenzoic acids in trilaurylammonium nitrate solutions in t -butylbenzene induces the exaltation of the extraction of U(VI) from nitric medium weakly acid. The study of influence of following parameters; carboxylic acid concentration, total amine concentration, pH on the distribution coefficient of U(VI), shows that the extraction mechanism corresponds to: R 3 N ( HA ) m + UO 2+ 2 ⇌ UO 2 A 2 ( HA ) (m−2−np) · R 3 N + n ( HA ) p + 2H + . Trilaurylammonium carboxylates ( R 3 N(HA) m ) are consequently cationic extractants.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3c119fd0b59dc299a89e3d73847e0958 https://doi.org/10.1016/0022-1902(76)80473-3 Zobrazit plný text záznamu