The dielectric constants and viscosities of binary mixtures of organophosphorus acids (D2EHPA, Cyanex 301, PC88A, and Cyanex 272) and quaternary amine (Aliquat 336) were measured by varying their chemical compositions. The strength of the interaction between the components in the binary mixture was analyzed through the deviation of dielectric constant, viscosity, and Grunberg-Nissan interaction parameters. The interaction of binary mixture was also verified through Fourier-transform infrared spectroscopy (FT-IR). The results indicated that the mixtures of D2EHPA/ Cyanex 301 + Aliquat 336 showed the stronger interaction among four acidic extractants in this work. FTIR data and analysis of the interaction on the basis of chemical structure indicate that ionic liquid can form in the mixture of D2EHPA and Aliquat 336 at specific composition. Adduct can be formed between Aliquat 336 and organophosphorus acids through hydrogen bond of methyl group. Our results can give some information on the selection of the composition of binary mixtures between organophosphorus acids and Aliquat 336 for the synergistic extraction of metal ions in hydrometallurgy.

通过改变它们的化学组成来测量有机磷酸（D2EHPA，Cyanex 301，PC88A和Cyanex 272）和季胺（Aliquat 336）的二元混合物的介电常数和粘度。通过介电常数，粘度和Grunberg-Nissan相互作用参数的偏差分析了二元混合物中各组分之间相互作用的强度。还通过傅立叶变换红外光谱法（FT-IR）验证了二元混合物的相互作用。结果表明，在这项工作中，D2EHPA / Cyanex 301 + Aliquat 336的混合物显示出四种酸性萃取剂之间的较强相互作用。FTIR数据和基于化学结构的相互作用分析表明，在特定组分下，D2EHPA和Aliquat 336的混合物中可能形成离子液体。可以通过甲基的氢键在Aliquat 336和有机磷酸之间形成加合物。我们的结果可以为湿法冶金中金属离子协同萃取中有机磷酸和Aliquat 336之间的二元混合物的组成提供一些信息。