Lithium adsorption from brine by iron-doped titanium lithium ion sieves  

作　　者：Shulei Wang Xin Chen Ying Zhang Yang Zhang Shili Zheng 

机构地区：[1]National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology,Institute of Process Engineering,Chinese Academy of Sdences,Beijing 100190,China [2]University of ChineseAcademy of Sciences,No.19A Yuquan Road,Beijing 100049,China [3]School of Chemical Engineering,Tianjin University,Tianjin 300350,China

出　　处：《Particuology》2018年第6期40-47,共8页颗粒学报（英文版）

基　　金：National Natural Science Foundation of China (Nos.51761135108;51774261).

摘　　要：Iron-doped lithium titanium oxides were prepared via a solid-state reaction and transformed into lithium ion sieves by acid treatment.Scanning electron microscopy,X-ray photoelectron spectroscopy,and transmission electron microscopy showed that Fe^3+was doped into the Ti-O lattice and Ti-Fe-O bonds were formed.Iron-doping improved lithium ion adsorption from brines.The saturated adsorption capacity of the iron-doped ion sieves in brine (Li+1.56g/L,pH =8.8)was 34.8mg/g.Lithium ion adsorption fitted pseudo-second-order kinetic and Langmuir equations,indicating that lithium ion adsorption on irondoped lithium ion sieves was chemical and predominantly monolayer.In addition,the iron-doped ion sieves showed excellent selectivity for lithium ion and good recyclability.These iron-doped ion sieves therefore provide effective lithium adsorbents for practical applications.

关 键 词：Iron-doped LITHIUM ion SIEVES BRINE ADSORPTION 

分 类 号：O3[理学—力学]