钯在乙醇水溶液中与钌、银、铜和铅的析相绿色萃取分离

Green Extraction and Separation of Pd from Ru,Ag,Cu and Pb in Ethanol.Aqueous Solution 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,Pd^(2+)与KBr和C_2H_5OH_2^+生成的[PdBr_4^(2-)][C2HsOH-2^+]_2三元缔合物能被乙醇相萃取,使Pd^(2+)与Ru^(2+)、Ag^+、Cu^(2+)和Pb^(2+)完全分离。该法在微量钯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 ethanol/water two phases in the presence of ammonium sulphate,and the ternary compound[PdBr42-][C2H5OH2＋]2 was formed by C2H5OH^2＋,Pd^2＋ and potassium bromide,that could be completely extracted during the dividing phase process,and Pd^2＋ could be entirely separated from Ru^3＋,Ag^＋,Cu^2＋ and Pb^2＋ by extraction.This method has the contain value for separation and enrichment of trace palladium.