中文摘要：

以高锰酸钾、无水乙醇、氢氧化锂等为主要原料，采用分步法制备锂离子筛，并考察所得锂离子筛在不同条件下于含锂溶液中的锂吸附情况，同时利用XRD表征相应产物的晶体结构．结果表明，采用分步法可制备具有离子筛特性的锂吸附剂，可从含锂溶液中提取锂，其饱和吸附容量随含锂溶液pH的增大而提高，pH为8时约为26．50mg／g，共存离子Na^＋、Ca^2＋、Mg^2＋等对其锂吸附能力负面影响的大小顺序为Mg^2＋〉Ca^2＋〉Na^＋，锂离子浓度的增大利于吸附容量的提高，该锂离子筛可应用于海水或盐湖卤水提锂；前体、锂离子筛及其不同吸附后产物的晶体结构均与Li1.6Mn1.6O4基本一致，只存在晶胞大小变化所致的细微差别，符合离子筛的特性．

英文摘要：

Lithium ion-sieve was synthesized via fractional treatment with KMnO4, anhydrous ethanol and LiOH. The lithium adsorption capacity for different lithium solutions （simple lithium solution, man-made seawater and brine） was tested and the phases of different product were characterized by powder X-ray diffraction （XRD）. The results show that the adsorption capacity of the as-prepared lithium ion-sieve rises with pH up, and the value is about 26.50 mg/g at pH 8; coexisting ion such as Na＋, Ca2＋ and Mg2＋ has some unfavorable effect on lithium adsorption capacity, and the influence degree is Mg~〉 Ca2~〉 Na＋; high lithium concentration has some advantages on adsorption capacity; the as-prepared ion- sieve has prior adsorption for lithium, and it could be applied in lithium extraction from seawater or brine; the crystal phase of precursor, ion-sieve and adsorption products is as same as Li1. 6Mn1.6O4 except for nuance about crystal cell, which is a specialty of ion-sieve.