| 摘要 |
PURPOSE:To produce the titled compound useful as a Li adsorbing material, etc., having improved selective adsorption of Li, high adsorption rate and large absorption volume, by treating Mg2MnO4 with an acidic solution and eluting Mg in the solution. CONSTITUTION:Mg2MnO4 is treated with an acidic solution at pH <=5 and Mg in the solution is eluted to give a novel Mn compound having relative intensity of X-ray diffraction peak shown by the table. The prepared Mg compound has spacing suitable for Li adsorption, improved selective adsorbability of Li, extremely high adsorption rate and extremely large adsorption volume, no toxicity, is stable in aqueous solutions, has the same Li concentration in an adsorbent as than in Li-containing ore and Li can be efficiently and economically recovered from a dilute solution such as sea water or water of terrestrial heat. The compound is useful as an electrode material having cell activity, etc. |
