Solvent extraction of uranium(VI) by p-tert-butylcalix[n]-arene acetate

Authors
Du, HF Zhang, AY Yang, ZX Zhou, ZM
Citation
Hf. Du et al., Solvent extraction of uranium(VI) by p-tert-butylcalix[n]-arene acetate, J RAD NUCL, 241(1), 1999, pp. 241-243
Citations number
5
Categorie Soggetti
Inorganic & Nuclear Chemistry
Journal title
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
ISSN journal
02365731 → ACNP
Volume
241
Issue
1
Year of publication
1999
Pages
241 - 243
Database
ISI
SICI code
0236-5731(199907)241:1<241:SEOUBP>2.0.ZU;2-W
Abstract
The solvent extraction of U(VI) by p-tert-butylcalix[n]-arene acetate (HnL) (n = 4, 6, 8) has been studied. The effects of acidity in aqueous phase an d concentration of extractant in organic phase on the distribution ratio we re examined. It has been found that the distribution ratio is proportional to [H+](-2) and [HnL]((O)) and the extracted complex species is UO2Hn-2L. T he equilibrium constants of the extraction reactions have been determined. The reaction mechanism is discussed.