Li~+ Extraction/Insertion Reaction with MgMn_(0.5)Ti_(0.5)O_3 Spinel in the Aqueous Phase

摘要

Inverse spinel-type metal oxides, magnesium-manganese-titanium oxide(MgMn_(0.5)Ti_(0.5)O_3), was prepared by a coprecipitation/thermal crystallization method. The extraction/insertion reaction with this material was investigation by X-ray, saturation capacity of exchange, and Kd measurement. The acid treatments of MgMn_(0.5)Ti_(0.5)O_3 caused Mg~(2+) extractions of more than 82%, while the dissolutions of Mn~(4+) and Ti~(4+) were less than 15%.The experimental results have proved that the acid-treated sample has a capacity of exchange 7.6 mmol·g~(-1) for Li~+ in the solution.