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

Spherical PVC-Li_4Mn_5O_(12) ion-sieves with diameter of about 3.5 mm were prepared by the developed PVC granulation process of Li_4Mn_5O_(12) 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-Li_4Mn_5O_(12) 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.