PVC-Li_4Mn_5O_(12)复合离子筛的锂吸附性能  

Lithium Adsorption of PVC-Li_4Mn_5O_(12) Ion-Sieve

作　　者：肖国萍[1] 周龙生[1] 孙淑英[1] 于建国[1] 

机构地区：[1]华东理工大学国家盐湖资源综合利用工程技术研究中心,上海200237

出　　处：《华东理工大学学报（自然科学版）》2012年第4期402-407,415,共7页Journal of East China University of Science and Technology

基　　金：国家自然科学基金(20906022);国家863计划(2012AA061601)

摘　　要：采用PVC粘合成型技术对实验室合成的Li_4Mn_5O_(12)粉体进行成型,制备出直径约为3.5mm的球形PVC-Li_4Mn_5O_(12)复合材料,并通过SEM、孔径分布、吸附动力学和选择性测试等手段研究成型前后离子筛的形貌和吸附性能。结果表明:PVC-Li_4Mn_5O_(12)复合样品中的离子筛仍为纳米棒;且球形离子筛具有较大的比表面积,在模拟卤水中对Li^+具有良好的选择性吸附性能。Spherical PVC-Li4Mn5O12 ion-sieves with diameter of about 3.5 mm were prepared by the developed PVC granulation process of Li4 MnSO12 ultrafine powder synthesized in our lab. The morphology and adsorption property were characterized by scanning electron microscopy （SEM） and methods to determine the pore size distribution, adsorption kinetics and selectivity. The nanorod structure of ultrafine powder was well maintained in the composite PVC-Li4Mn5O12 ion-sieve, and the spherical ion-sieve had high specific surface area, high Li＋ adsorption capacity and high selectivity for Li＋ adsorption in simulated brine.

关 键 词：PVC-Li_4Mn_5O_12 离子筛 锂 选择性吸附 卤水 

分 类 号：TQ028[化学工程]