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研究了硫酸铵-溴化钾铵-正丙醇体系萃取分离和富集锗的行为及与一些金属离子分离的条件。硫酸铵能使正丙醇的水溶液分成两相,在分相过程中,Ge4+与KBr生成(GeBr62-),并与质子化正丙醇(C3H7OH2+)形成缔合物[GeBr62-][C3H7OH2+]2,此缔合物能被正丙醇相完全萃取。当正丙醇、KBr和硫酸铵的浓度分别为30%(V/V)、7.0×10-3 mol/L、0.20 g/mL时,(GeBr62-)的萃取率达到97.7%以上,而Ni2+,Pb2+,Cr3+,Co2+,Fe3+,Al3+,Mg2+,Ag+,Bi3+,Cu2+,W(Ⅵ)和V(Ⅴ)基本不被萃取,实现了Ge4+与上述金属离子的分离。
The extraction and enrichment of germanium from ammonium bromide-ammonium bromide-n-propanol system and the separation conditions from some metal ions were studied. Ammonium sulfate can separate the n-propanol aqueous solution into two phases. During the phase separation, Ge4 + and KBr generate (GeBr62-) and associate with protonated n-propanol (C3H7OH2 +) [GeBr62-] [C3H7OH2 +] 2 This complex can be fully extracted n-propanol phase. When the concentrations of n-propanol, KBr and ammonium sulfate were 30% (V / V), 7.0 × 10-3 mol / L and 0.20 g / mL respectively, the extraction rate of (GeBr62-) was over 97.7% , Pb2 +, Cr3 +, Co2 +, Fe3 +, Al3 +, Mg2 +, Ag +, Bi3 +, Cu2 +, W (VI) and V (V) were not extracted.