摘要
在盐酸介质中用二(2-乙基已基)单硫代磷酸萃取钯,其萃取性能随着盐酸浓度增高而降低。用连续变换法、斜率法和饱和法测得萃合物的组成为Pd_2L_3Cl,IR和H'NMR光谱进一步论证了其反应机理为阳离子交换机理;P=S键中的S原子与钯形成配位键。萃取反应如下: 2H_2PdCl_4+3HL(?)
The extraction behavior of palladium with di-(2-ethylhexyl) monothiophosphoric acid from hydrochloric acid solution has been studied. The extraction capability decreases with the increase of hydrochloric acid concentration. It is showed by slope method, continuous alternate method and saturation method that the composition of extracted species is Pd_2L_3Cl. IR and H'NMR studies show that the extraction mechanism of palladium is a cation exchange reaction through coordination with P=S bond.
出处
《贵金属》
CAS
CSCD
北大核心
1992年第3期26-29,共4页
Precious Metals
基金
国家自然基金
关键词
钯
溶剂萃取
反应机理
Palladium, Solvent extraction, Reaction mechanism
