Register  /  Login               
P. 36-39 /

Exploiting the solvation properties of ionic liquids
A novel approach for the separation of zirconium from hafnium*

PAUL S. CAMPBELL, CATHERINE C. SANTINI, YVES CHAUVIN
Université de Lyon, Institut de Chimie de Lyon, UMR 5265 CNRS-Université de Lyon 1 -ESCPE Lyon,C2P2
Equipe Chimie Organométallique de Surface, ESCPE, 43 bd du 11 novembre 1918, Villeurbanne cedex, F-69626, France

Abstract

Hexamethylbenzene reacts differently with zirconiumand hafnium tetrachloride, affording, for the former, abinuclear molecular complex Zr(η6-Me6C6)Cl2(μ-Cl)3ZrCl3 and for the latter a binuclear ionic complex [Hf(η6-Me6C6)Cl3]+[Hf2Cl9]-. This difference in reactivity is exploited to carryout a two-phase extraction using 1-butyl-3-methylimidazoliumtetrachloroaluminate as the ionic liquid phase and a toluene/pentane mixture as the organic phase. This technique presentsthe potential advantage of recovering pure zirconium chloridewithout the formation of highly inert oxides.


...



About us



Teknoscienze publisher
& Event Organizer

Viale Brianza, 22
20127 - Milano - Italy

info@teknoscienze.com
Tel. +39 02 26809375