摘要
研究了以１－苯基－３－甲基－４－苯甲酰基吡唑酮－５（ＰＭＢＰ）为流动载体的乳状液膜（ＥＬＭ）法提取钪，确定最佳液膜体系组成为０．４％ＰＭＢＰ－３％Ｓｐａｎ８０－５％液体石蜡－煤油－３ｍｏｌ／ＬＨＣｌ，Ｒｏｉ＝１：１（油内比）．Ｒｗｅ（水乳比）可达２０：１．用该体系对钪与混合稀土进行分离，钪的回收率可达９５．５％，分离系数β（ＳＣ／ＲＥ）＝３２．０。
Scandium(Ⅲ)was extracted by the emulsion liquid membrane (ELM)method us-ing 4-benzoyl-3-methyl-1-phenyl-2-pyrazolin-5-on as a carrier. The extraction rate of Sc(Ⅲ)was more than 95.5%and the separation factor for Sc(Ⅲ)and mixed rare earths β_(SC/RE) was32.0. The optimum conditions for the extraction as follows:pH=1.7～3.8 for feed liquid,PMBP 0.4%, surfactant Span80 3%, mixed solution of liquid paraffin and kerosene 5%,concentration of HCl in the internal phase 3mol/L, R_(oi)=1 : 1,R_(we)=20 : 1.
出处
《应用化学》
CAS
CSCD
北大核心
1994年第2期77-80,共4页
Chinese Journal of Applied Chemistry
关键词
钪
提取
分离
液膜法
PMBP
scandium, mixed rare earth, extraction, separation, emulsion liquid membranemethod, benzoyl-methyl-phenyl-pyrazolidone
