丁基苯并噻唑亚砜萃取钯(II)的性能研究

Performance of Extracting Palladium(II) with Butyl-Benzothiazole Sulfoxide

用丁基苯并噻唑亚砜(用M表示)作萃取剂,在盐酸介质中对钯萃取性能进行研究,结果表明:以无臭煤油作稀释剂、M的浓度20%、盐酸浓度1.0mol/L、相比O/A=0.6、萃取时间10min时,钯的萃取率高于96.0%。浓度为60%的M对钯的萃取容量大于11g/L,说明M对钯萃取性能良好。在室温下,用8.0mol/LNH3.H2O可有效地反萃取钯,反萃取率可达到94.6%。

In hydrochloric acid medium, the experiment of extracting palladium（Ⅱ） with butyl-benzothiazole sulfoxide （simplified form as M） is studied, the results show that when concentration of M is 20%, HC1 is 1.0mol/L, ratio of phases（O/A） is 0.6, and extracting time is 10 minutes, the extraction rate of palladium is beyond 96.0 %. The extraction capacity of 60 % M surpasses 1 lg/Lo It shows that the performance of M extracting palladium （Ⅱ） is excellent. Palladium （Ⅱ） temperature, and the percentage stripping of palla can be stripped effectively by 8mol/L NH3·H20 in room um（Ⅱ） is as high as 94.6%.