摘要
用微波固相合成法制备提锂离子筛前驱体LiMn2O4,高温焙烧时间大大缩短,制得的产物纯净.最佳制备条件:n(Li)/n(Mn)为0.5,微波加热6 min,焙烧温度850℃,焙烧8 h.对前驱体LiMn2O4,用HCl洗脱后进行提锂实验,利用原子吸收法测定含锂量,得到样品的锂吸附量为3.19 mg/g.
Lithium ion-sieve LiMn_2O_4 was prepared by a microwave solid state reaction and characterized by XRD and SEM.Compared with the traditional preparation,the calcined time for the precursor is greatly shortened and the product with high purity is obtained by using the microwave solid state reaction.The optimum synthesis conditions were reactant mixtures with n(Li)/n(Mn) molar ratio of 0.5 were heated for 6?min,under microwave conditions and followed by calcination 8?h at 850?℃.The precursor LiMn_2O_4 was delithiated by using HCl and the experiment of extract of lithium was made.The experimental results show that the adsorptive volume of lithium ion-sieve material for Li^+ is 3.19?mg/g determined by atomin adsorption spectroscopy(AAS).
出处
《云南大学学报（自然科学版）》
CAS
CSCD
北大核心
2005年第S3期465-467,共3页
Journal of Yunnan University(Natural Sciences Edition)
基金
国家"863"计划资助项目(2002AA302302)
关键词
锂离子筛
微波
固相合成
lithium ion-sieve
microwave
solid state reaction
