论文部分内容阅读
萃取剂异羟肟酸(或称氧肟酸)和羟肟属于螯合萃取类试剂。随着溶剂萃取的深入研究和发展,现在已出现了许多新型的这类萃取剂。由于它们有特殊的化学结构,在对金属离子进行萃取分离时具有以下一些性质:化学稳定性好;在与水不相混的碳氢有机溶剂中有很高的溶解度;和许多金属离子有很强的萃取能力;控制适当的萃取条件或者改变萃取剂化学结构的某些基团,对一些金属离子的分离具有很高的选择性;有高的负荷能力;羟肟萃取剂的反应速度虽慢,但加动力学协萃剂可使萃取反应
Extract hydroxamic acid (or hydroxamic acid) and hydroxyoxime belongs to chelating extraction reagent. With the further research and development of solvent extraction, many new types of extractants have emerged. Due to their special chemical structure, they have the following properties in the extraction and separation of metal ions: good chemical stability; high solubility in hydrocarbon-immiscible organic solvents; and many metal ions Strong extraction ability; control of appropriate extraction conditions or change the chemical structure of certain groups of extractants, for the separation of some metal ions with high selectivity; high load capacity; hydroxyoxime extractant reaction rate is slow , But add kinetics Xie Bu agent can make extraction reaction