Nonaqueous low-temperature nitration of uranium oxides in TBP

Autor:	A. Yu. Kuznetsov, E. P. Buchikhin, A. M. Chekmarev, V. V. Solov’eva
Rok vydání:	2008
Předmět:	Solvent chemistry.chemical_compound Uranyl nitrate Chemistry Nitration Inorganic chemistry chemistry.chemical_element Physical and Theoretical Chemistry Uranium Dissolution
Zdroj:	Radiochemistry. 50:466-469
ISSN:	1608-3288 1066-3622
DOI:	10.1134/s1066362208050056
Popis:	Nonaqueous low-temperature nitration of UO2 and U3O8 in the system TBP-chlorinated dilu-ent-NO2 was studied. The oxides dissolve to form uranyl nitrate. The influence exerted on the dissolution efficiency by the concentration of the donor solvent in the TBP-tetrachloroethylene system and by additions of water was examined. These dependences pass through a maximum. The influence of temperature on nitration of U3O8 and UO2 was studied, and the activation energies were determined (48.0 and 31.2 kJ mol−1, respectively). The partial orders of the nonaqueous nitration reactions with respect to NO2 were determined for U3O8 and UO2: 1.0 and 1.4, respectively.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0fd93a0304bd7c8fb8d247b95810eaba https://doi.org/10.1134/s1066362208050056 Zobrazit plný text záznamu Plný text ve formátu PDF