Determination of structure stability and adsorption performance of Li1.33Mn1.67O4 adsorbents

Adsorbents based on lithium manganese double oxides Li_1.33Mn_1.67O₄ with a spinel structure were synthesized using the sol–gel method. The influence of temperature during synthesis and conversion to the H-form, as well as the conditions of the adsorption experiment, on the adsorption capacity of the resulting adsorbents was investigated. It was found that increasing the synthesis temperature of Li_1.33Mn_1.67O₄ oxides from 500 to 600 °C leads to a decrease in the adsorption capacity for Li⁺ ions from 6.60 to 1.62 mmol g⁻¹ at an adsorption temperature of 50 °C.