Li^+ extraction/insertion reaction with Mg_2Mn_(0.5)Ti_(0.5)O_4 inverse spinel in the aqueous phase

作     者：JANG Jinhe DONG Dianquan CHEN Guanghui LIU Jiaqiang LI Jianlong 

作者机构：Department of Chemical Engineering Qingdao University of Science ＆ Technology Qingdao 266042 China 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2007年第26卷第6期

页      面：536-540页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

主　　题：extraction/insertion reaction inverse spinel-type metal oxides ion-exchange mechanism Mg2Mn0.5Ti0.5O4 

摘      要：An inverse spinel-type metal oxide, magnesium-manganese-titanium oxide （Mg2Mn0.5Ti0.5O4）, were prepared using the coprecipitation/thermal crystallization method. The extraction/insertion reaction with this material was investigated by X-ray, saturation capacity of exchange, pH titration, and distribution coefficient （Kd） measurement. The acid treatments of Mg2Mn0.5Ti0.5O4 caused Mg^2＋ extractions of more than 81%, whereas the dissolutions of Mn^4＋ and Ti^4＋ were less than 10%. The experimental results proved that the acid-treated sample has a capacity of exchange 56 mg·g^-1 for Li^＋ in the solution. The chemical analysis showed that the Li^＋ extraction/insertion progressed mainly by ion-exchange mechanism and surface adsorption.