HGa_(0.1)Mn_(1.9)O_(4)锂离子筛的制备与性能评价  

Preparation and performance measurement of HGa_(0.1)Mn_(1.9)O_(4)lithium manganese ion sieve

作　　者：牛越 薛峰[1] 周鑫 居沈贵 NIU Yue;XUE Feng;ZHOU Xin;JU Shen-gui(College of Chemical Engineering,Nanjing Tech University,Nanjing 211816,China)

机构地区：[1]南京工业大学化工学院,江苏南京211816

出　　处：《应用化工》2022年第5期1242-1247,共6页Applied Chemical Industry

基　　金：国家自然科学基金项目(22075134)。

摘　　要：采用共沉淀-水热法制备出掺杂前驱体LiGa_(0.1)Mn_(1.9)O_(4)(LGMO),经酸浸脱锂,得到掺杂离子筛HGa_(0.1)Mn_(1.9)O_(4)(HGMO),考察了离子筛的吸附、脱附及其相关性能。结果表明,吸附约在24 h达到平衡,最佳酸洗和脱附的盐酸溶液浓度为0.07 mol/L,HGMO离子筛锰的溶损为4.65%,表明掺杂Ga^(3+)降低了离子筛的溶损。HGMO饱和吸附容量(Qe)为25.3 mg/g,5次循环吸附后,吸附容量保持在17.267 mg/g以上。The doped precursor LiGa_(0.1)Mn_(1.9)O_(4)(LGMO)was prepared by combination of coprecipitation and hydrothermal method.The doped ion sieve HGa_(0.1)Mn_(1.9)O_(4)(HGMO)was obtained by removing lithium from the LGMO by acid pickling.The adsorption reached equilibrium in about 24 h,the optimal concentration of the hydrochloric acid solution for pickling and desorption is 0.07 mol/L,and the dissolution loss of manganese is 4.65%,which proves that doping Ga^(3+) reduces the dissolution loss of the ion sieve.The saturated adsorption capacity Q of HGMO is 25.3 mg/g.The cycle adsorption capacity of HGMO remained above 17.267 mg/g after 5 cycles of adsorption experiments.

关 键 词：锂离子筛 镓掺杂 吸附 

分 类 号：TQ424.2[化学工程]