碘化钾-正丙醇-锗(Ⅳ)三元缔合物萃取分离锗  

Extraction separation of germanium with potassium iodide-1-propanol-germanium(Ⅳ) ternary complex

作　　者：韩金土[1] 司学芝[2] 张会杰[1] 马万山[1] 

机构地区：[1]信阳师范学院化学化工学院,河南信阳464000 [2]河南工业大学化学化工学院,河南郑州450052

出　　处：《冶金分析》2012年第1期71-74,共4页Metallurgical Analysis

基　　金：河南省教育厅自然科学研究计划项目(2006150023)

摘　　要：探讨了碘化钾-正丙醇-锗(Ⅳ)三元缔合物萃取分离锗的行为及与一些金属离子分离的条件。结果表明,氯化钠能将正丙醇的水溶液分成两相,在分相过程中,Ge(Ⅳ)与碘化钾生成的GeI62-与质子化正丙醇(C3H7OH2+)形成的缔合物[GeI62-][C3H7OH2+]2能被正丙醇相完全萃取。当正丙醇、碘化钾和氯化钠的浓度分别为30%(V/V)、8.0×10-3 mol/L、0.20g/mL时,Ge(Ⅳ)的萃取率达到98.4%以上,Zn2+、Fe2+、Mg2+、Ni 2+、Co2+、Mn2+、Ag+、Al 3+和Cr3+基本不被萃取,实现了GeⅣ与上述金属离子的分离。The extraction and separation behaviors of germanium by potassium iodide-1-propanol-germanium（Ⅳ） complex and the separation conditions of some metal ions were studied.The results showed that sodium chloride could separate the 1-propanol aqueous solution into two phases.In phase separation process,the complex[GeI2-6][C3H7OH＋2]2 formed from GeI2-6（which was generated from germanium（Ⅳ） and potassium iodide） and protonized 1-propanol（C3H7OH＋2） could be fully extracted by 1-propanol phase.The extraction rate of germanium（Ⅳ） was higher than 98.4% when the concentrations of 1-propanol,potassium iodide and sodium chloride were 30%（V/V）,8.0×10-3 mol/L and 0.20 g/mL,respectively.Meanwhile,Zn2＋,Fe2＋,Mg2＋,Ni2＋,Co2＋,Mn2＋,Ag＋,Al3＋ and Cr3＋ could not be extracted,realizing the separation of germanium（Ⅳ） from these metal ions.

关 键 词：锗 正丙醇 碘化钾 萃取分离 

分 类 号：O657.32[理学—分析化学]