Mutual separation characteristics of neighbouring rare earth elements Nd, Sm, Eu and Gd using stepwise chlorination chemical vapour transport

被引：18
作者：
Sun, YH
Wang, ZC [1 ]
Guo, L
机构：
[1] Northeastern Univ, Dept Chem, Shenyang 110006, Liaoning, Peoples R China
[2] Chinese Acad Sci, Inst Appl Ecol, Shenyang 110015, Liaoning, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 1998年 / 269卷 / 1-2期
基金：
中国国家自然科学基金;
关键词：
rare earth separation; binary oxide mixture; chlorination; chemical vapour transport; vapour complex;
D O I：
10.1016/S0925-8388(98)00162-5
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Mutual separation characteristics have been investigated for the neighbouring rare earth elements Nd, Sm, Eu and Gd from binary oxide mixtures Nd2O3-Sm2O3, Sm2O3-Eu2O3 and Eu2O3-Gd2O3 using a stepwise chlorination-chemical vapour transport reaction mediated by vapour complexes LnAl(n)Cl(3n+3) within 6 h. The separation factor, expressed as atomic ratio for the resulting chlorides, was 6.84 for Nd:Sm, 4.84 for Sm:Eu and 26.5 for Gd:Eu, respectively. As a comparison, the conventional CVT process resulted in the separation factor values of 1.64 for Nd:Sm, 3.19 for Sm:Eu, 1.78 for Gd:Eu and 3.99 for Eu:Gd. (C) 1998 Elsevier Science S.A.
引用
收藏
页码：88 / 91
页数：4
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