Study on structural ions of LaF3-LiF molten salts by cryoscopic method

3rd International Conference on New Material and Chemical Industry

材料科学;化学工业

Zhu, X.P.^1^2 ; Sun, S.C.^1 ; Liu, C.^1 ; Tu, G.F.^1 ; Sun, T.^2 ; Zhang, J.Y.^3

School of Metallurgy, Northeastern University, Shenyang

110819, China^1

School of Sciences, Northeastern University, Shenyang

110819, China^2

Shenyang Research Institute of Chemical Industry, Shenyang

110021, China^3

关键词: Cryoscopic;    Designed experiments;    Dissociation reactions;    Dynamic thermal analysis;    Flood modeling;    Mole fraction;    Molten salt;    Solidus temperature;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/479/1/012080/pdf
DOI  :  10.1088/1757-899X/479/1/012080

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The dynamic thermal analysis method and specially designed experiment device are used to determine the liquidus and solidus temperatures of LaF3-LiF molten salts in different compositions. Based on the determined results and under the assumed conditions of only one single La species in the molten salts and the formation of the La-F ion in accordance with Temkin or Flood model, the structural ions of LaF3-LiF molten salts in which the mole fraction of LaF3 was less than 15% were studied by cryoscopic method. The results show that the most reasonable dissociation reaction mechanism of LaF3 in LaF3-LiF melts in which LaF3 mole fraction is less than 15% is LaF3+F-=LaF4-.