文献类型：期刊文献

英文题名：Granulation to LiMn₂O₄ Ion-Sieve and Its Lithium Adsorption Property

作者：Xiao Guo-Ping[1];Peng Jie[1];Zhang Qin-Hui[1];Yu Jian-Guo[1]

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, Coll Chem Engn, Shanghai 200237, Peoples R China

年份：2010

卷号：26

期号：3

起止页码：435

外文期刊名：CHINESE JOURNAL OF INORGANIC CHEMISTRY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000276230800011)】；

语种：英文

外文关键词：MnO2; ion-sieve; lithium; selective adsorption; brine

摘要：The granular-type LiMn2O4 adsorbent was prepared by the solvent-exchange method using PVC as a binder and was then changed to H type ion-sieve by proper dilution with HCl solution. The effect of PVC content during the preparation process was studied on the surface morphology, and the lithium-ion exchange ability were studied by SEM and static/dynamic adsorption-desorption measurement. Static adsorption kinetics of SMO-a, SMO-b and SMO-p sample is well accorded with Lagergren equation with the first order adsorption rate constant of 1.03x10(-5), 1.06x10(-5) and 9.72x10(-6) s(-1), respectively, and the static ion-exchange capacity for lithium ions of SMO-a is 2.50 mmol.g(-1). The PVC-granulation process of LiMn2O4 superfine powder has little influence on the static adsorption capacity of the ion-sieve, however, the capacity decreases to 1.11 mmol.g(-1) during the dynamic adsorption process. The maximum enrichment of lithium as evaluated by hydrochloric acid elution is 9 folds.