Thermodynamics of Solvent Extraction of Rare and Scattered Metal-Indium with Diethylhexylmonothiophosphoric Acid

Chemical Research in Chinese Universities ›› 2006, Vol. 22 ›› Issue (1): 111-113.

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Thermodynamics of Solvent Extraction of Rare and Scattered Metal-Indium with Diethylhexylmonothiophosphoric Acid

LIU Xing-zhi, ZANG Shu-liang, FANG Da-wei, LI Jun, WANG Lu-ning

Institute of Chemical Science and Engineering, Liaoning University, Shenyang 110036, P. R. China

Received:2004-10-13 Online:2006-02-24 Published:2011-08-06
Supported by:
Supported by the National Natural Science Foundation of China(No. 20441005).

Abstract

Abstract: The thermodynamics of extracting In(Ⅲ) with diethylhexylmonothiophosphoric acid as an extractant in a H₂SO₄ system is reported. The equilibrium molalities of In³⁺ ions were measured at a high acidity and ionic strengths varying from 0.1 to 2.0 mol/kg in an aqueous phase containing Na₂SO₄ as the supporting electrolyte. The values of the standard extraction constant K⁰ at various temperatures were obtained by the methods of extrapolation and polynomial approximation. The equation lgK⁰=-31.93-5.93×10³/T+6.15×10^-2T was also obtained and the thermodynamic quantities for the extraction process were calculated.

Key words: Extraction, Indium, Diethylhexylmonothiophosphoric acid, Thermodynamics

LIU Xing-zhi, ZANG Shu-liang, FANG Da-wei, LI Jun, WANG Lu-ning. Thermodynamics of Solvent Extraction of Rare and Scattered Metal-Indium with Diethylhexylmonothiophosphoric Acid[J]. Chemical Research in Chinese Universities, 2006, 22(1): 111-113.

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Thermodynamics of Solvent Extraction of Rare and Scattered Metal-Indium with Diethylhexylmonothiophosphoric Acid

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