Solvent extraction separation of uranium (VI) with acetatecalix[n]arene and beta -diketone (HTTA)

We have studied a new method for the solvent extraction separation of UO sub 2 exp 2+ by four calix[n]arenes from acetate solutions. The solvent extraction of UO sub 2 exp 2+ with these calix[n]arenes and thenoyltrifluoroacetone (HTTA) in toluene has been studied in the presence or absence of alkali...

Full description

Saved in:
Bibliographic Details
Published in:Journal of alloys and compounds 1999-07, Vol.303-304, p.524-528
Main Authors: Felinto, MCFC, Almeida, V F
Format: Article
Language:English
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We have studied a new method for the solvent extraction separation of UO sub 2 exp 2+ by four calix[n]arenes from acetate solutions. The solvent extraction of UO sub 2 exp 2+ with these calix[n]arenes and thenoyltrifluoroacetone (HTTA) in toluene has been studied in the presence or absence of alkali ion (Na exp + ). The efficiency of extraction increases drastically in the presence of alkali ions, due to the formation of heteronuclear complexes. Synergistic extraction was observed with calix[n]arenes and thenoyltrifluoroacetone (HTTA). Absorption spectra show shifts of characteristics bands of calix[n]arenes from the ultraviolet region to the visible region with a gap of 100 nm when HTTA is in the solution.
ISSN:0925-8388