Oxide solubility and Raman spectra of NdF3-LiF-KF-MgF2-Nd2O3 melts

被引：57
|
作者：
Stefanidaki, E
Photiadis, GM
Kontoyannis, CG
Vik, AF
Ostvold, T
机构：
[1] Inst Chem Engn & High Temp Chem Proc, FORTH, GR-26500 Patras, Greece
[2] Univ Patras, Dept Pharm, Patras, Greece
[3] Norwegian Univ Sci & Technol, Dept Chem, N-7194 Trondheim, Norway
来源：
JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS | 2002年 / 11期
关键词：
D O I：
10.1039/b111563b
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The solubility of Nd2O3 in NdF3-LiF-MgF2 melts is about 0.08-0.38 mol% when the NdF3 concentration varies from 15 to 30 mol% at 900degreesC. The solubility increases from 0.13 mol% at 750 degreesC to 0.22 mol% at 900 degreesC in the NdF3-LiF eutectic. When MgF2 is added to NdF3-LiF binary melts saturated with Nd2O3, the Nd2O3 solubility seems to decrease slightly at 30 mol% NdF3, while a slight increase was observed with 15 mol% NdF3 in the binary. When dissolving Nd2O3 in the NdF3-LiF eutectic Raman spectroscopy showed that the complex ions NdOFx(x-1)- and Nd2OF(x+3)((x-1)-) may form in the melt. The most reasonable candidates seem to be: NdOF43- and NdOF54- among the mononuclear compounds and Nd2OF106-, Nd2OF84- among the binuclear complexes.
引用
收藏
页码：2302 / 2307
页数：6
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