物理化学学报 >> 2003, Vol. 19 >> Issue (09): 839-843.doi: 10.3866/PKU.WHXB20030912

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Li2Mg2Si4O10F2、H2Mn8O16•1.4H2O和Li1.3Ti1.7Al0.3(PO4)3在高浓度LiCl水溶液中的离子交换行为

娄太平;李大纲;潘蓉;张慧萍   

  1. 东北大学材料与冶金学院，沈阳　110004
  • 收稿日期:2003-03-28 修回日期:2003-05-09 发布日期:2003-09-15
  • 通讯作者: 娄太平 E-mail:loutaiping@yahoo.com.cn

Ion Exchange Behavior of Li2Mg2Si4O10F2, H2Mn8O16•1.4H2O and Li1.3Ti1.7Al0.3(PO4)3 in High-concentration LiCl Solution

Lou Tai-Ping;Li Da-Gang;Pan Rong;Zhang Hui-Ping   

  1. School of Materials and Metallurgy, Northeastern University, Shenyang　110004
  • Received:2003-03-28 Revised:2003-05-09 Published:2003-09-15
  • Contact: Lou Tai-Ping E-mail:loutaiping@yahoo.com.cn

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摘要： 研究了用功能材料Li2Mg2Si4O10F2 (LHT)、H2Mn8O16•1.4H2O (CRYMO)和Li1.3Ti1.7Al0.3(PO4)3 (LTAP)分别去除高浓度氯化锂水溶液中的杂质Fe3＋、K＋和Na＋.实验结果表明，这几种功能材料分别对溶液中的杂质Fe3＋、K＋和Na＋有很高的选择性，除杂效果明显.分析和研究了这几种功能材料在高浓度氯化锂水溶液中分别与Fe3＋、K＋和Na＋的交换行为.结果表明，在高浓度氯化锂溶液中这几种功能材料与杂质交换的动力学行为可近似用JMAK方程描述.

关键词: 氯化锂, 杂质, 功能材料, 离子交换

Abstract: In this paper several functional materials, such as Li2Mg2Si4O10F2 (LHT), H2Mn8O16•1.4H2O (CRYMO) and Li1.3Ti1.7Al0.3(PO4)3 (LTAP), were investigated in order to separate respectively iron, potassium and sodium impurities from the aqueous solution of high-concentration lithium chloride. The experimental results show that these functional materials have very high ion exchange selectivity to Fe3＋, K＋ and Na＋, respectively. And these functional materials are effective for the separation of impurities from high-concentration lithium chloride solution. The ion exchange behavior of these functional materials with impurities in high-concentration lithium chloride solution was analyzed and discussed. It is shown that the ion exchange kinetics of the Li2Mg2Si4O10F2, H2Mn8O16•1.4H2O and Li1.3Ti1.7Al0.3(PO4)3 with Fe3＋, K＋ and Na＋ respectively in high-concentration lithium chloride solution can be represented approximately by the equation of JMAK.

Key words: Lithium chloride, Impurity, Functional materials, Ion exchange