摘要
本文以氯化铝作为络合物配体与稀土氯化物形成气态络合物，研究了相邻稀土元素氯化物之间火法分离（化学气相传输分离）的可能性，结果表明，二元系分离系数La∶Ce＝12.30，Pr∶Ce＝5.79，Pr∶Nd＝1.32；四元系中Pr－Nd的分离系数高达Pr∶Nd＝1.98。
Mutual separation of neighboring rare earth elements has been investigated from their binary chloride mixtures LaCl3-CeCl3, CeCl3-PrCl3, PrCl3-NdCl3 and their quaternary chloride mixtures LaCl3-CeCl3-PrCl3-NdCl3 by using a dry process (i.e. chemical vapour transport process), in which the aluminium chloride is selected as complex former.The separation factors from the binary chloride mixtures are 12.3 for La : Ce, 5.79 for Pr:Ce and 1.32 for Pr: Nd. An higher separation factor of Pr:Nd=1.98 was also observed from their quaternary chloride mixture.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
1997年第4期391-394,共4页
Acta Metallurgica Sinica
基金
国家自然科学基金
高等学校博士点专项科研基金
关键词
稀土
火法分离
化学气相传输法
氯化物
rare earth, dry separation, LaCl_3-CeCl_3, CeCl_3-PrCl_3, PrCl_3-NdCl_3,LaCl_3-CeCl_3-PrCl_3-NdCl_3
