萃取剂DTPM萃取Rh(Ⅲ)的性能及其分离效果  

Behaviors of Rh(Ⅲ) Extraction and Efficiencies of Separation of Rh(Ⅲ) by DTPM Extraction Agent

作　　者：莫启武[1] 陈淑群[2] 

机构地区：[1]华南理工大学环科所 [2]中山大学化学系

出　　处：《贵金属》1997年第2期22-25,共4页Precious Metals

摘　　要：用ＤＴＰＭ作萃取剂萃取Ｒｈ（Ⅲ），得到了定量萃取Ｒｈ（Ⅲ）的最佳条件。用斜率法测得有机相萃合物组成为Ｒｈ（ＤＴＰＭ）２（ＳＣＮ－）２（ＣＨ３ＣＯＯ－）。ＤＴＰＭ萃取Ｐｄ（Ⅱ）、Ｐｄ（Ⅳ）和萃取Ｒｈ（Ⅲ）的条件相差很大，借此可用于Ｐｄ（Ⅱ）／Ｒｈ（Ⅲ）和Ｐｔ（Ⅳ）／Ｒｈ（Ⅲ）的分离，实验证明，分离效果良好。The extraction behaviors of Rhodium(Ⅲ) and the separation of Rh(Ⅲ)/Pd(Ⅱ), Rh(Ⅲ)/Pt(Ⅳ) with dithiodiantipyrylmethane(DTPM) in thiocyanate media were studied in this paper. The effects of acidity, reagent concentration, phase ratio on extraction efficiency were studied as well, and the optimum conditions of extraction was developed. The composition of complex in organic phase determined by slope ratio method is showed as follows: Rh(DTPM) 2(SCN -) 2(CH 3COO -). Based on the different conditions for extraction of Pd(Ⅱ), Pt(Ⅳ) and Rh(Ⅲ), the separation of Rh(Ⅲ)/Pd(Ⅱ), Rh(Ⅲ)/Pt(Ⅳ), was gained and the results were satisfactory.

关 键 词：溶剂萃取 DTPM 炼铑 分离 

分 类 号：TF837.042[冶金工程—有色金属冶金]