文献类型：期刊文献

英文题名：Synthesis and Adsorption Properties of Li1.6Mn1.6O4 by a Combination of Redox Precipitation and Solid-Phase Reaction

作者：Sun, Shu-Ying[1];Xiao, Jia-Li[1];Wang, Jin[1];Song, Xingfu[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：2014

卷号：53

期号：40

起止页码：15517

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;EI(收录号：20144300120792);WOS:【SCI-EXPANDED(收录号:WOS:000343016500023)】；

基金：This work is supported by NSFC (20906022), National 863 Program (2012AA061601), and the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：Ions - Sieves - X ray diffraction - Adsorption - Manganese compounds - Scanning electron microscopy - Synthesis (chemical) - Ion exchange - Chlorine compounds

摘要：Orthorhombic LiMnO2 (o-LiMnO2), spinel Li1.6Mn1.6O4 precusors, and spinel H1.6Mn1.6O4 ion sieves were synthesized by a combination of controlled redox precipitation and solid-phase reaction. o-LiMnO2 was synthesized by a controlled redox precipitation using Mn(OH)(2), LiOH, and (NH4)(2)S2O8. Spinel Li1.6Mn1.6O4 precursor was prepared by the heat treatment of o-LiMnO2. Further, an ion sieve (H1.6Mn1.6O4) was synthesized by the acid (HCl) treatment of Li1.6Mn1.6O4. The effect of redox precipitation and solid-phase reaction on the structure and ion-exchange property of the ion sieve was examined by powder X-ray diffraction, scanning electron microscopy, and Li+-selective adsorption measurements. The results showed that the ion sieve exhibited highly selective adsorption capacity for Li+ (3.88 mmol.g(1)) from Qarhan salt lake brine, which was significant for the Li+ extraction from low-grade brine.