Li+ extraction/insertion reaction with Mg2Mn0.5Ti0.5O4 inverse spinel in the aqueous phase
来源期刊：Rare Metals2007年第6期
论文作者：JANG Jinhe, DONG Dianquan, CHEN Guanghui, LIU Jiaqiang, and LI Jianlong Department of Chemical Engineering, Qingdao University of Science & Technology, Qingdao , China
文章页码：536 - 540
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 investi- gated by X-ray, saturation capacity of exchange, pH titration, and distribution coefficient （Kd） measurement. The acid treat- ments of Mg2Mn0.5Ti0.5O4 caused Mg2+ extractions of more than 81%, whereas the dissolutions of Mn4+ and Ti4+ 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.
JANG Jinhe, DONG Dianquan, CHEN Guanghui, LIU Jiaqiang, and LI Jianlong Department of Chemical Engineering, Qingdao University of Science & Technology, Qingdao 266042, China
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 investi- gated by X-ray, saturation capacity of exchange, pH titration, and distribution coefficient （Kd） measurement. The acid treat- ments of Mg2Mn0.5Ti0.5O4 caused Mg2+ extractions of more than 81%, whereas the dissolutions of Mn4+ and Ti4+ 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.
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