文献类型：期刊文献

英文题名：The influence of NaCl concentration on the (LiCl-KCl) eutectic system and temperature dependence of the ternary system

作者：Wu, Jie;Wang, Jia;Ni, Haiou;Lu, Guimin[1];Yu, Jianguo

机构：[1]East China Univ Sci & Technol, Sch Resources & Environm Engn, Shanghai 200237, Peoples R China; East China Univ Sci & Technol, Natl Engn Res Ctr integrated Utilizat Salt Lake R, Shanghai 200237, Peoples R China

年份：2018

卷号：253

起止页码：96

外文期刊名：JOURNAL OF MOLECULAR LIQUIDS

收录：;EI(收录号：20180204643403);WOS:【SCI-EXPANDED(收录号:WOS:000426411500012)】；

基金：We acknowledge the financial support provided by the National Natural Science Foundation Project of China (Grant U1407202 and Grant U1407126).

语种：英文

外文关键词：Ternary molten salts; Reverse non-equilibrium molecular dynamic simulation; The correlation of local structure and properties

摘要：To explore the complex correlation between local structure and properties in the alkali chlorides ternary system, simulations were systematically conducted for 11 different (Li, Na, K) Cl compositions from 900 K to 1200 K as the fundamental study of magnesium chloride electrolysis. For the ternary system, the density was calculated across the full composition and database was established. Furthermore, the structure simulation results revealed that the coordination of Li-Cl pair tended to be a distorted tetrahedron and the Na-Cl and K-Cl pairs tended to be an octahedron. The prediction of the properties was compared with available experiments and extrapolated analytical data, the deviations are acceptable. The temperature had no significant effects on the local structure and thermal conductivity. The results also showed that the Tosi-Fumi potential predicted positive temperature dependence of self-diffusion coefficients and ionic conductivity, and negative temperature dependence of the viscosity. In addition, the correlation between the local structure and transport properties was explored. The hydrodynamic radius of Li+ and K+ is similar in the ternary system, it can be found that whilst the K+ ion diffuses as an atomic species, the Li+ ion carries at least some of its coordinating ions in the diffusion process, giving the diffusing species a larger effective size than the bare ion. (C) 2018 Elsevier B.V. All rights reserved.