N7301萃取钯的研究  

EXTRACTION OF PALLADIUM WITH N7301

作　　者：冯彦琳[1] 王靖芳[1] 徐晓芳 

机构地区：[1]山西大学化学系

出　　处：《有色金属》1998年第1期76-79,共4页Nonferrous Metals

摘　　要：研究Ｎ７３０１从氯化物体系中萃取钯的性能，考察酸度、氯离子浓度、Ｎ７３０１浓度对萃取平衡的影响，进行反萃试验，结果表明，钯浓度为１０６．４ｍｇ·Ｌ－１，Ｎ７３０１浓度为４×１０－３ｍｏｌ·Ｌ－１，ｐＨ值为１时，萃取率达９８．８％，用０．２１ｍｏｌ·Ｌ－１硫脲作反萃剂，反萃率达９９．９％，用斜率法及饱和法确定萃合物的组成为（Ｒ３ＮＨ）２ＰｄＣｌ４。其萃取钯的机理经紫外－可见光谱证实为离子缔合体系的阴离子交换反应。he extraction behaviour of palladium from chloride system with N7301 was examined The effects of the concentrations of H^+ Cl~ - and N7301 on the extraction equilibrium were investigated and stripping experimented The experiment showed that extraction rate of palladium came to 988% when Pd (Ⅱ) concentration was 106.4 mg·L ^-1 , N7301 concentration was 4×10~ -3 mol·L~ -1 and pH=1 The stripping rate came to 99.9% when thioureas concentration was 0.21mol·L~ -1  The composition of extracted complex (R_ 3NH)_ 2 PdCl_ 4 was determined by slope analysis and saturation capacity The extraction mechanism of palladium with N7301 proved to be an anion exchange reaction by UV-Vis spectra

关 键 词：N7301 萃取 炼钯 胺类萃取剂 

分 类 号：TF836.032[冶金工程—有色金属冶金]