Liquid-liquid extraction and separation of gallium(III) with Cyanex 921

Authors
Mishra, BY Rokade, MD Dhadke, PM
Citation
By. Mishra et al., Liquid-liquid extraction and separation of gallium(III) with Cyanex 921, I J CHEM A, 39(10), 2000, pp. 1114-1116
Citations number
14
Categorie Soggetti
Chemistry
Journal title
INDIAN JOURNAL OF CHEMISTRY SECTION A-INORGANIC BIO-INORGANIC PHYSICAL THEORETICAL & ANALYTICAL CHEMISTRY
ISSN journal
03764710 → ACNP
Volume
39
Issue
10
Year of publication
2000
Pages
1114 - 1116
Database
ISI
SICI code
0376-4710(200010)39:10<1114:LEASOG>2.0.ZU;2-4
Abstract
A simple and rapid method for the separation of gallium(III) from aqueous c hloride media with tri-n-octylphosphine oxide (Cyanex 921) is described. Ga llium(III) has been extracted with Cyanex 921 in toluene in the pH range 4. 5-6.0 and stripped back with 2.0 M HNO3. The effects of pH, equilibration p eriod, diluents, diverse ion and stripping agents on the extraction of gall ium(III) have been studied. The equilibrium constant and the thermodynamic parameters, DeltaH, DeltaS and DeltaG have been evaluated. The method has b een extended for binary and multicomponent separation of gallium(III).