EXTRACTION BY N,N,N',N'-TETRAALKYL -2 ALKYL PROPANE -1,3 DIAMIDES. H. U(VI) and Pu(IV)
- 1 March 1994
- journal article
- research article
- Published by Taylor & Francis in Solvent Extraction and Ion Exchange
- Vol. 12 (2) , 297-323
- https://doi.org/10.1080/07366299408918212
Abstract
Extraction equilibria of U(VI) and Pu(IV) between aqueous nitric acid solutions and the diamide DMDBTDMA ((C4H9(CH3)NCO)2CHC14H29) dissolved TPH were investigated. Extraction takes place via the formation of for all the acidities. Bilogarithmic dependencies ofdistribution coefficiets on the ligand concentration reveal non-integer slopes higher than those expected from saturation. Such features, very often observed for amides, can be explained by outer sphere coordination. Thus, two kinds of iteractions were observed:- in the inner sphere of the metal: diamide-metal ion complexation;-in the outer sphere of the metal:diamide-metallic complex interactions.Keywords
This publication has 10 references indexed in Scilit:
- THE EXTRACTION BY N.N-DIALKYLAMIDES. II. EXTRACTION OF ACTINIDE CATIONSSolvent Extraction and Ion Exchange, 1992
- Malonamides as New Extractants for Nuclear Waste SolutionsSeparation Science and Technology, 1991
- THE EXTRACTION BY N.N'TETRABUTYLGLUTARAMIDES II. EXTRACTION OF U(VI), Pu(IV) AND SOME FISSION PRODUCTSSolvent Extraction and Ion Exchange, 1989
- SYNTHESIS AND USES OF THE AMIDES EXTRACTANTSSolvent Extraction and Ion Exchange, 1989
- Potentiality of Nonorganophosphorus Extractant in Chemical Separations of ActinidesSeparation Science and Technology, 1988
- EXTRACTION BY N,N'-TETRAALKYLMALONAMIDES II.Solvent Extraction and Ion Exchange, 1987
- Mecanisme d'extraction des ions uranium(VI) par les N,N-DialkylamidesJournal of the Less Common Metals, 1986
- THE TRUEX PROCESS - A PROCESS FOR THE EXTRACTION OF THE TKANSURANIC ELEMENTS EROM NITRIC AC In WASTES UTILIZING MODIFIED PUREX SOLVENT*Solvent Extraction and Ion Exchange, 1985
- Actinide nitrate complexesCoordination Chemistry Reviews, 1981
- Spectra of uranyl nitrate adducts with organophosphorus and organonitrogen ligandsJournal of Molecular Spectroscopy, 1968