Lithium extraction using zirconium oxide coated lithium manganese oxide ion-exchange adsorbents

Abstract

Lithium extraction from sedimentary brines using spinel lithium manganese oxide, Li_1.6Mn_1.6O₄, is challenging because of the presence of dissolved organic compounds, resulting in manganese reduction and loss. Coating the sorbent with a 7.5 nm layer of zirconium dioxide decreased manganese loss by approximately 50%, while not substantially impacting its adsorption capacity and selectivity, thereby increasing its usable life.