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

页码：88 / 91

页数：4

共 39 条

[31] RADIOCHEMICAL INVESTIGATION OF THULIUM CHLORIDE ALUMINUM-CHLORIDE AND GADOLINIUM CHLORIDE ALUMINUM-CHLORIDE VAPOR COMPLEXES [J].