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 988% 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
出处
《有色金属》
CSCD
1998年第1期76-79,共4页
Nonferrous Metals
