论文部分内容阅读
用Fourier变换红外光谱(FT—IR)和光子相关光谱(PCS)研究了皂化的有机磷酸酯类萃取剂和环烷酸萃取剂在正庚烷或正庚烷与2-辛醇的混合溶剂中所形成的聚集物,以及萃取稀土元素后有机相聚集物的变化.结果表明,有机磷酸酯在正庚烷中皂化后形成反向胶团((?)_h<5.0nm),其平均流体力学半径与萃取剂分子的长度相当;2-辛醇的加入可增大反向胶团的粒径.环烷酸皂化后能在混合溶剂中形成W/O型微乳状液(5.0 nm<(?)_h<100 nm).皂化萃取剂萃取稀土元素后,有机相中形成不稳定的聚集物,继而产生聚凝.讨论了聚凝过程的可能机理.
Fourier transform infrared (FT-IR) and photon correlation spectroscopy (PCS) were used to study the effects of saponified organophosphate ester extractant and naphthenic acid extractant in n-heptane or mixed solvent of n-heptane and 2-octanol The aggregates formed, and the changes of organic phase aggregates after the extraction of rare earth elements.The results show that the organophosphate ester forms a reverse micelle ((?) _h <5.0nm) after saponification in n-heptane, and its average fluid mechanics The radius is similar to the length of the extractant molecule. The addition of 2-octanol increases the particle size of the reverse micelles. After saponification of naphthenic acid, W / O microemulsion (5.0 nm <(? ) _h <100 nm) .Solvent extractant rare earth elements extraction, the formation of unstable aggregates in the organic phase, followed by condensation. Discuss the possible mechanism of the condensation process.