| LiMn_2O_4离子筛成型及锂吸附性能 |
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| 引用本文： | 肖国萍,彭 洁,张钦辉,于建国.LiMn_2O_4离子筛成型及锂吸附性能[J].无机化学学报,2010,26(3):435-439. |
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| 作者姓名： | 肖国萍 彭 洁 张钦辉 于建国 |
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| 作者单位： | 华东理工大学化工学院,化学工程联合国家重点实验室,上海,200237 |
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| 基金项目： | 国家自然科学基金，上海市科委纳米专项，教育部科学研究重点项目 |
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| 摘 要： | 采用PVC为粘结剂制备了LiMn_2O_4离子筛球型颗粒,分析了PVC添加量对离子筛吸附性能的影响,并通过扫描电境(SEM)、静态和动态连续锂吸附实验研究了PVC粘结剂对离子筛形貌和锂离子吸附性能的影响。结果表明,SMO-a、SMO-b和SMO-P样品的锂离子静态吸附数据与Lagergren方程吻合良好,吸附速率常数依次为1.03×10~(-5)、1.06×10~(-5)s~(-1)和9.72×10~(-6)s~(-1)SMO-a样品的静态饱和吸附量达到2.50 mmol·g~(-1),PVC造粒对离子筛的静态条件下的饱和吸附容量和吸附速率影响很小,但连续动态操作条件下SMO-a的吸附容量降低为1.11 mmol·g~(-1);经盐酸洗涤脱附后,Li~+最大富集倍数约为9。
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| 关 键 词： | 二氧化锰 离子筛 锂 选择性吸附 卤水 |
Granulation to LiMn2O4 Ion-Sieve and Its Lithium Adsorption Property |
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| XIAO Guo-Ping,PENG Jie,ZHANG Qin-Hui and YU Jian-Guo.Granulation to LiMn2O4 Ion-Sieve and Its Lithium Adsorption Property[J].Chinese Journal of Inorganic Chemistry,2010,26(3):435-439. |
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| Authors: | XIAO Guo-Ping PENG Jie ZHANG Qin-Hui and YU Jian-Guo |
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| Institution: | State Key Lab of Chemical Engineering, College of Chemical Engineering East China University of Science and Technology, Shanghai 200237,State Key Lab of Chemical Engineering, College of Chemical Engineering East China University of Science and Technology, Shanghai 200237,State Key Lab of Chemical Engineering, College of Chemical Engineering East China University of Science and Technology, Shanghai 200237 and State Key Lab of Chemical Engineering, College of Chemical Engineering East China University of Science and Technology, Shanghai 200237 |
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| Abstract: | The granular-type LiMn_2O_4 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 HC1 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 adso... |
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| Keywords: | MnO2 ion-sieve lithium selective adsorption brine |
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