Molten solvent extraction behavior of trivalent La, Sm, Dy, and Yb with tri-n-butyl phosphate into molten paraffin wax at 60 ℃

作     者：PENG Bo, GAO Jinzhang, FAN Haiyan, KANG Jingwan, and YANG Wu Department of Chemistry, Northwest Normal University, Lanzhou 730070, China 

作者机构：Department of Chemistry Northwest Normal University Lanzhou 730070 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2002年第21卷第1期

页      面：7-11页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070302[理学-分析化学] 0703[理学-化学] 

基　　金：the project KJCXGC-01 of Northwest Normal University China 

主　　题：solvent extraction rare earth TBP Paraffin wax 

摘      要：The extraction behavior of La^3+, Sm^3+, Dy^3+, and Yb^3+ insodium acetate-acetic acid medium was studied with tri-N-butylphosphate (TBP) at 60 deg. C using paraffin wax as a diluent. Theextraction percentage is greater than 85/100 in the pH range of 6 to8. The result of slope analysis method indicates that thecompositions of the extracted species are different between the lightand heavy rare ear this. The formula of the extracted species isfound to be La (TBP) (OH) (Ac)_2 for La^3+ and Yb (TBP) (OH)_3 forYb^3+. The effects of extracting time, the concentration of TBP inthe organic phase and salts on the extraction efficiency were alsodiscussed.