文献类型：期刊文献

英文题名：Synthesis and Adsorption Properties of Li1.6Mn1.6O4 Spinel

作者：Xiao, Jia-Li[1];Sun, Shu-Ying[1];Wang, Jin[1];Li, Ping[1];Yu, Jian-Guo[1]

机构：[1]E China Univ Sci & Technol, Natl Engn Res Ctr Integrated Utilizat Salt Lake R, Shanghai 200237, Peoples R China

年份：2013

卷号：52

期号：34

起止页码：11967

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;EI(收录号：20133716722318);WOS:【SCI-EXPANDED(收录号:WOS:000323876000019)】；

基金：The research was supported by NSFC (20906022), National 863 Program (2012AA061601), STCSM (11dz1205202) and the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：Hydrothermal synthesis - X ray diffraction - Chlorine compounds - Potash - Metals - Adsorption - Metal ions - Manganese oxide - Scanning electron microscopy - Ion exchange

摘要：Orthorhombic-LiMnO2, spinel-type Li1.6Mn1.6O4, and spine! MnO2 center dot 0.5H(2)O were synthesized via a combination of hydrothermal synthesis and solid-phase reaction. o-LiMnO2 with different stacking fault concentrations were synthesized by controlled hydrothermal reaction using a KMnO4, MnCl2 and LiOH mixed solution. Spinel-type Li1,6Mn1.6O4 precursor was prepared via heat treatment of o-LiMnO2. The effects of hydrothermal and solid-phase reaction on the structure and ion-exchange properties were examined with powder X-ray diffraction, scanning electron microscopy, and Li+ selective adsorption measurements. The results showed that stacking fault concentration of o-LiMnO2 affects the adsorption properties of Li1.6Mn1.5O4. Li+ adsorption capacity reached 6.06 mmol.g(-1) at equilibrium. Distribution coefficients of metal ions were in the order Li+ >> Na+ > Mg2+ > K > Ca2+ and were significant for Li+ extraction from low grade brine. The equilibrium uptake of Li+ from salt lake brine remained at 3.62 mmol.g(-1) after six cycles.