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考察用高位阻叔胺作试剂进行Pt(Ⅱ)的萃取行为、试验过程中用6种结构不同的叔胺作萃取溶剂和苯、石油醚或260号煤油作稀释剂。烷基取代基的位阻增加或叔胺(NR_3)的C链(R)的加长能引起萃取溶剂碱性的减弱、从而提高了反萃取的效率。
The investigation of the extraction of Pt (Ⅱ) with high hindered tertiary amine as the reagent was carried out. Six kinds of tertiary amines with different structures were used as the extraction solvent and benzene, petroleum ether or kerosene No.260 as the diluent. Increasing the steric hindrance of the alkyl substituent or increasing the C chain (R) of the tertiary amine (NR 3) can cause a decrease in the basicity of the extraction solvent, thereby increasing the efficiency of the back-extraction.