期刊
SOLVENT EXTRACTION AND ION EXCHANGE
卷 18, 期 6, 页码 1109-1134出版社
MARCEL DEKKER INC
DOI: 10.1080/07366290008934724
关键词
-
The extraction of microquantities of Sc, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, and Y from HNO3 solutions by selected diphosphine dioxides of various structures in dichlorethane has been studied. It has been found that the extraction of these elements decreases with an increase in the number of methylene units (n) in the molecule of dioxide Ph2P(O)(CH2)(n)P(O)Ph-2. Extractability of rare-earth elements decreases from La to Lu when methylene dioxide is used. With ethylene dioxides, it changes in the reverse order. The effect of HNO3 concentration in the aqueous phase and that of the extractants in the organic phase on the extraction of Sc, rare earth elements, and Y are considered. The stoichiometry of the extracted complexes has been determined and the extraction constants calculated.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据