Reduction potentials of alkali metal ions (Li+, K+ and Na+) in LiCl-KCl and LiCl-KCl-NaCl melts

摘要：

The cyclic voltammetry and square wave voltammetry were employed to determine Li+, K+, Na+ reduction potentials in LiCl-KCl and LiCl-KCl-NaCl melts at 450-600 ℃. In KCl-LiCl (1:1 to 7:3 molar ratio) melt, Li ion was reduced prior to K. ion and its reduction potential was dependent on temperature, shifting positively to about 0.2 V as temperature changing from 450 to 600 ℃, and K ion onset reduction potential was varied with composition, shifting positively about 0.22 V as composition changed from 1:1 to 7:3 molar ratio. Therefore, the difference in K and Li ion reduction potential in LiCl-KCl melt decreased as temperature increased and the molar ratio of KC1 to LiCl increased, and slightly higher than the value obtained from the Nernst Equation. Na ion presented a 0.2 V more positive potential than Li ion in LiCl-KCl (1:1 molar ratio)-(0.28 mol/L) NaCl melt that did not obey the Nernst Equation.

关键词： reduction potential KCl-LiCl-NaCl cyclic voltammgram square-wave voltammgram

作者: LI Bing SHEN Miao LOU Jingwei YU Jianguo

作者单位: National Engineering Research Center for Integrated Utilization of Salt Lake Resource, East China University of Science & Technology, Shanghai 20023 7, China

会议类型: 国际会议

会议名称: The 3rd Asian Conference on Molten Salts and Ions Liquids 2011(第三届亚洲熔盐与离子液体会议)

会议地点: 哈尔滨

会议语种:英文

页码: 99-102

在线出版日期: 2011-01-06（万方平台首次上网日期，不代表论文的发表时间）