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LI+ AND MG2+ EXTRACTION AND LI+ INSERTION REACTIONS WITH LIMG0.5MN1.5O4 SPINEL IN THE AQUEOUS PHASE

被引：42
作者：
FENG, Q
MIYAI, Y
KANOH, H
OOI, K
机构：
[1] Government Industrial Research Institute, Takamatsu 761, Shikoku
来源：
CHEMISTRY OF MATERIALS | 1993年 / 5卷 / 03期
关键词：
D O I：
10.1021/cm00027a013
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Spinel-type lithium magnesium manganese oxide LiMg0.5Mn1.5O4 was prepared by a coprecipitation/thermal crystallization method. Li+ and Mg2+ in the spinel-type lithium magnesium manganese oxide could be extracted by an acid treatment. The Li+ and Mg2+ extraction reaction with LiMg0.5Mn1.5O4 and the Li+ insertion reaction with the acid-treated oxide were investigated by chemical, X-ray, DTA-TG analyses, FT-IR spectroscopy, pH titration, and K(d) measurement. The extraction and the insertion proceed topotactically by ion-exchange-type mechanisms. The acid-treated oxide showed a lithium ion sieve property from microamount to macroamount of metal ion loading. The selectivity sequence for alkali metal ions was Na < K < Rb, Cs << Li over the pH range studied.
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页码：311 / 316
页数：6
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