A Novel Solvent Extraction Route for the Mutual Separation of Platinum, Palladium, and Rhodium in Hydrochloric Acid Media
A Novel Solvent Extraction Route for the Mutual Separation of Platinum, Palladium, and Rhodium in Hydrochloric Acid Media
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DOI：
10.1080/07366290903408599
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发表时间：
2010-01-01
影响因子：
2
通讯作者：
Paiva, Ana Paula
中科院分区：
文献类型：
--
作者：
Malik, Poonma;Paiva, Ana Paula
研究了1,2-二氯乙烷中的N， N' -二甲基- N， N' -二苯基十四烷基丙二胺（DMDPHTDMA）作为溶剂萃取剂，主要用于分离浓盐酸介质中铂、钯和铑的相互分离以及与一些常见伴生元素的分离。合成铂族金属（PGMs）溶液通常含有氯化锡。所研究的PGMs在一次萃取步骤中可以很容易地从Fe（III）、Cu（II）、Ni（II）、Co（II）、Zn（II）、Mn（II）和In（III）中分离出来，但在一次萃取/汽提循环中不能完全分离Pt、Pd和Rh。详细研究了氯化锡（II）的浓度和温度对PGMs稳定性的影响。将该分离方案应用于某汽车催化转化器浸出液中。
N, N' - dimethyl - N, N' - diphenyltetradecylmalonamide (DMDPHTDMA) in 1,2-dichloroethane has been investigated as a solvent extraction reagent to mainly perform the separation of platinum, palladium, and rhodium from each other and from some commonly associated elements contained in concentrated hydrochloric acid media. The synthetic platinum-group metal (PGMs) solutions always contained tin chloride. The studied PGMs were easily separated from Fe(III), Cu(II), Ni(II), Co(II), Zn(II), Mn(II), and In(III) in a single extraction step, but the complete Pt, Pd, and Rh mutual separation was not achieved in a single extraction/stripping cycle. Parameters related with PGMs labilization, such as the required concentrations of tin(II) chloride and the effect of temperature, have been studied in detail. The developed separation scheme was applied to an automobile catalytic converter leaching solution.