PVC-MnO2的制备及其对锂离子的吸附行为

doi:10.12034/j.issn.1009-606X.217358

过程工程学报 ›› 2018, Vol. 18 ›› Issue (4): 821-827.DOI: 10.12034/j.issn.1009-606X.217358

PVC-MnO₂的制备及其对锂离子的吸附行为

王宏岩1，黄凯1*，张玉生3，郑诗礼2，张懿2，李平2

1. 北京科技大学冶金与生态工程学院，北京 100083
2. 中国科学院过程工程研究所湿法冶金清洁生产技术国家工程实验室，北京 100190
3. 山东钢铁济钢合金科技有限公司，山东济南 250000

收稿日期:2017-10-16 修回日期:2017-12-08 出版日期:2018-08-22 发布日期:2018-08-15
通讯作者: 黄凯 khuang@metall.ustb.edu.cn
基金资助:
亚熔盐法处理低品位硼镁矿制备过硼酸钠清洁化工新过程的基础研究

Preparation of PVC-MnO₂ and its adsorption behavior to Li ion

Hongyan WANG1, Kai HUANG1*, Yusheng ZHANG3, Shili ZHENG2, Yi ZHANG2, Ping LI2

1. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijng 100083, China
2. National Engineering Lab for Hydrometallurgical Cleaner Production Technology, Institute of Process Engineering,
Chinese Academy of Sciences, Beijing 100190, China
3. Shandong Steel Jisteel Alloy Technology Co., Ltd., Jinan, Shandong 250000, China

Received:2017-10-16 Revised:2017-12-08 Online:2018-08-22 Published:2018-08-15
Contact: Kai -HUANG khuang@metall.ustb.edu.cn

摘要/Abstract

摘要： MnCO3和Li2CO3经高温煅烧合成Li4Mn5O12，再与聚氯乙烯(PVC)和N,N-二甲基甲酰胺溶液混合，干燥、酸洗后制得粒径3?4 mm的多孔球形PVC?MnO2锂离子筛，用其吸附Li离子. 结果表明，PVC?MnO2吸附Li离子的反应符合Langmuir方程和拟二级动力学方程，吸附焓变为0.358 kJ/mol，吸附反应为吸热反应，Li离子最高吸附量可达23.4 mg/g.

关键词: PVC-MnO2, 锂离子筛, 成型, 吸附行为, 动力学, 吸附焓变

Abstract: MnCO3 and Li2CO3 as raw materials were mixed and calcined to prepare Li4Mn5O12 powders, which was further added into the polyvinyl chloride (PVC) and N,N-Dimethylformamide (DMF) solutions to form suspensions. The suspensions were dried and acid-washed to obtain spherical PVC?MnO2 with 3?4 mm size. PVC?MnO2 was used to adsorption Li ion. The results showed that the adsorption of Li ion onto PVC?MnO2 followed the Langmuir isotherm model and the pseudo-second order kinetic equation. The enthalpy change (0.358 kJ/mol) was positive indicating the adsorption of Li ion onto PVC?MnO2 was an endothermic reaction, and the maximum adsorption capacity of Li ion was 23.4 mg/g.

Key words: PVC-MnO2, Granulation, Lithium ion-sieves, Adsorption behavior, Kinetics, Adsorption enthalpy change

王宏岩黄凯张玉生郑诗礼张懿李平. PVC-MnO₂的制备及其对锂离子的吸附行为[J]. 过程工程学报, 2018, 18(4): 821-827.

Hongyan WANG Kai HUANG Yusheng ZHANG Shili ZHENG Yi ZHANG Ping LI. Preparation of PVC-MnO₂ and its adsorption behavior to Li ion[J]. Chin. J. Process Eng., 2018, 18(4): 821-827.

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PVC-MnO₂的制备及其对锂离子的吸附行为

Preparation of PVC-MnO₂ and its adsorption behavior to Li ion

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