摘要
采用冰点降低法分别研究了以LiF为溶剂的稀LiF-NdF3熔盐中Nd-F离子团及LiF-NdF3-Li2CO3熔盐中Nd-O-F离子团的非氟离子的个数。结果表明,在以LiF为溶剂的稀LiF-NdF3熔盐中,Nd-F离子团中Nd3+的个数为2,这种离子团最可能的存在形式为Nd2F7-;而在以LiF为溶剂的稀LiF-NdF3-Li2CO3熔盐的含Nd3+,O2-离子团中,Nd3+与O2-的个数比为1,认为这种离子团最可能的存在形式为Nd2O2F42-。由此而得到的关于熔盐离子结构的信息对于理解工业实际应用的高NdF3含量的电解钕熔盐结构会有很大帮助。
Non-fluoride ionic number of Nd-F in dilute LiF-NdF3 melts and Nd-O-F species in dilute LiF-NdF3-Li2CO3 melts was researched by cryoscopic method,respectively.The results have showed that number of Nd3＋ was 2 in Nd-F species for dilute LiF-NdF3 melts,and it was thought that the most reasonable one was Nd2F7-.For dilute LiF-NdF3-Li2CO3 melts,the Nd^3＋ and O2-ratio was thought to be 1 in Nd-O-F species,and Nd2O2F42-was deemed as the most probable one.Information about ionic structure of the researched melts may contribute to understanding of melts with higher NdF3 contents for industrial application.
出处
《稀土》
EI
CAS
CSCD
北大核心
2008年第5期58-60,共3页
Chinese Rare Earths
基金
国家重点基础研究发展计划(2007CB210305)
