锡与钼、镓、铈和钨的绿色析相萃取富集和分离研究

Studies on Green Extraction and Enrichment Separated of Sn from Mo,Ga,Ce and W by Phase Separation

在硫酸铵存在下，乙醇水溶液能够分为醇／水两相，在分相过程中， C2 H5 OH2＋与[ Sn （SCN）5～6][（5～6）－4]－生成的[C2H5OH2]1～2[Sn（SCN）5～6]三元缔合物能被乙醇相萃取，使Sn（Ⅳ）与Mo（Ⅵ）、Ga（Ⅲ）、Ce（Ⅲ）和W（Ⅵ）离子分离。该方法在微量锡的分离和富集分析中有一定的实用价值。

The ethanol aqueous solution could be well divided into two phases of ethanol /water under the effect of ammonium sulphate. The associated [ C2H5OH2 ]1~2 [ Sn （ SCN ）5~6 ] formed from C2H5OH2＋ and [ Sn （SCN）5~6][（5~6） -4] -could be extracted during this process .Sn（Ⅳ） could be separated from Mo（Ⅵ）, Ga（Ⅲ）, Ce （Ⅲ） and W（Ⅵ） by extraction.This method is practical to the separation and enrichment of trace stannum .