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

作　　者：LIU Xing-zhi ZANG Shu-liang FANG Da-wei LI Jun WANG Lu-ning 

机构地区：[1]Institute of Chemical Science and Engineering, Liaoning University, Shenyang 110036, P. R. China

出　　处：《Chemical Research in Chinese Universities》2006年第1期111-113,共3页高等学校化学研究（英文版）

基　　金：SupportedbytheNationalNaturalScienceFoundationofChina(No.20441005).

摘　　要：The thermodynamics of extracting In（ Ⅲ） with diethylhexylmonothiophosphoric acid as an extractant in a H2SO4 system is reported. The equilibrium molalities of In^3＋ 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 K^0 at various temperatures were obtained by the methods of extrapolation and polynomial approximation. The equation lgK^0 = - 51.95 - 5.93 × 10^3/T ＋ 6. 15 × 10^-2 T was also obtained and the thermodynamic quantities for the extraction process were calculated.The thermodynamics of extracting In（ Ⅲ） with diethylhexylmonothiophosphoric acid as an extractant in a H2SO4 system is reported. The equilibrium molalities of In^3＋ 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 K^0 at various temperatures were obtained by the methods of extrapolation and polynomial approximation. The equation lgK^0 = - 51.95 - 5.93 × 10^3/T ＋ 6. 15 × 10^-2 T was also obtained and the thermodynamic quantities for the extraction process were calculated.

关 键 词：Extraction Indium Diethylhexylmonothiophosphoric acid THERMODYNAMICS 

分 类 号：O614.372[理学—无机化学] O652.62[理学—化学]