应用化学 ›› 1998, Vol. 0 ›› Issue (5): 98-100.

• 研究论文 • 上一篇    下一篇

MnO2的离子交换行为及其离子筛法提取锂

张碧泉   

  1. 福建师范大学化学系 福州350007
  • 收稿日期:1998-03-30 修回日期:1998-06-17 出版日期:1998-10-10 发布日期:1998-10-10
  • 基金资助:
    福建省自然科学基金

Ionic-exchange Behaviour of MnO2 and Selective Adsorption of Lithium Ions by MnO2 Ionic Sieve

Zhang Biquan   

  1. Department of Chemistry, Fujian Normal University, Fuzhou 350007
  • Received:1998-03-30 Revised:1998-06-17 Published:1998-10-10 Online:1998-10-10

摘要: 锂在受控核聚变反应中的应用以及高能锂电池的出现,显示了其在解决能源问题的重要意义.但当前查明的锂矿石贮量不大,近年来,人们已开展有关从海水中提取锂的研究.在电 解质溶液中MnO2表面具有离子交换特性[1],以MnO2和LiOH制得的离子筛型吸附剂,对海水中的锂有非常高的选择性.本文以电解二氧化锰(EMD)为基体制成离子筛型无机阳离子交换剂,探讨其对盐场卤水和海水中Li+离子的选择吸附性.

关键词: 电解二氧化锰, 离子筛, 锂提取

Abstract: Fibrous electrolytic manganese dioxide(EMD) was prepared from manganous chloride solution by electrolyzing at 90~95 ℃ and using graphite anode. EMD has the exchange properties with cations in aqueous chloride solutions. A lithium type ionic sieve made from EMD substrate may be used for selective adsorption of trace lithium from sea water with yield of about 90%.

Key words: electrolytic manganese dioxide, ionic sieve, lithium adsorption