Solvent Extraction of Indium(III) with Bis(2-Ethylhexyl) Phosphinic Acid in Toluene

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Purshottam M. Dhadke¹  Mandar T. Naik and¹ 

[1] Department of Chemical Technology, University of Mumbai

关键词: Solvent Extraction;    Extraction Mechanism;    Indium(III);    Bis(2-Ethylhexyl) Phosphinic Acid;    Thermodynamics;   

DOI  :  10.1252/jcej.32.366

来源: Maruzen Company Ltd

【 摘 要 】

References(20)Cited-By(9)Extraction equilibrium data is obtained for distribution of indium(III) between bis(2-ethylhexyl) phosphinic acid dissolved in toluene and acidic aqueous nitrate media. The stoichometry of the extracted species is determined on the basis of slope analysis and IR spectra. The extraction of indium(III) proceeds by a cation exchange mechanism and the extracted species is InR3·3HR. Temperature dependence of the extraction equilibrium is examined by temperature variation method to estimate apparent thermodynamic functions (ΔH, ΔS and ΔG). The extraction process is exothermic in nature and an increase in temperature is not favorable.

【 授权许可】

Unknown