摘要
Mn CO3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-Mn O2锂离子筛,用其吸附Li离子.结果表明,PVC-Mn O2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 k J/mol,吸附反应为吸热反应,Li离子最高吸附量可达23.4 mg/g.
MnCO_3 and Li_2CO_3 as raw materials were mixed and calcined to prepare Li4 Mn5 O12 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-MnO_2 with 3~4 mm size. PVC-MnO_2 was used to adsorption Li ion. The results showed that the adsorption of Li ion onto PVC-Mn O2 followed the Langmuir isotherm model and the pseudo-second order kinetic equation. The enthalpy change（0.358 k J/mol） was positive indicating the adsorption of Li ion onto PVC-MnO_2 was an endothermic reaction, and the maximum adsorption capacity of Li ion was 23.4 mg/g.
作者
王宏岩
黄凯
张玉生
郑诗礼
张懿
李平
Hongyan WANG;Kai HUANG;Yusheng ZHANG;Shili ZHENG;Yi ZHANG;Ping LI(School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijng 100083, China;National Engineering Lab for Hydrometallurgical Cleaner Production Technology, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China;Shandong Steel Jisteel Alloy Technology Co., Ltd., Jinan, Shandong 250000, China)
出处
《过程工程学报》
CAS
CSCD
北大核心
2018年第4期821-827,共7页
The Chinese Journal of Process Engineering
基金
国家自然科学基金资助项目(编号:51574212,U1403195)
作者简介
王宏岩（1991-），男，江苏省连云港市人，硕士研究生，冶金工程专业;黄凯，通讯联系人，E-mail：khuang@memll．ustb．edu．cn．
