Frontiers of Chemical Science and Engineering
>> 2014,
Volume 8,
Issue 4
doi:
10.1007/s11705-014-1449-3
RESEARCH ARTICLE
Preparation and characterization of lithium
1. College of Marine Science & Engineering, Tianjin University of Science & Technology, Tianjin 300457, China.2. College of Material Science & Chemical Engineering, Tianjin University of Science & Technology, Tianjin 300457, China
Accepted: 2014-12-11
Available online: 2015-01-14
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Abstract
Lithium -MnO ion-sieves were prepared from spinel LiMn O via treatment with nitric acid. The LiMn O was synthesized by a solid state reaction between LiOH·H O and MnO . The effects of the calcination time and temperature on the preparation of the LiMn O precursor and the lithium ion-sieve were investigated. In addition, the Li extraction ratio, the Mn dissolving ratio and the adsorption properties of the lithium ion-sieve were all measured. The lithium ion-sieve had a high exchange capacity and was selective for Li . Specifically, at pH= 13, the ion exchange capacity of Li was 30.9 mg/g in 10 mmol/L LiCl solution and the lithium extraction ratio and manganese dissolving ratio were 95% and 25%, respectively.