文献类型：期刊文献

中文题名：水热合成法制备锂离子筛工艺参数的研究

英文题名：Study on Preparation of Lithium Ion Sieve by Hydrothermal Synthesis Method

作者：孟庆祥[1];许海涛[1];许振良[1];陈光[2]

机构：[1]华东理工大学化学工程联合国家重点实验室,化学工程研究所膜科学与工程研发中心,上海200237;[2]上海电气海水淡化工程技术公司,上海200090

年份：2014

卷号：55

期号：10

起止页码：588

中文期刊名：化学世界

外文期刊名：Chemical World

收录：北大核心:【北大核心2011】；CSCD:【CSCD_E2013_2014】；

基金：上海市科技攻关计划(11DZ1205201)

语种：中文

中文关键词：水热法;Li1.6Mn1.6O4;锂离子筛;吸附

外文关键词：hydrothermal method; Li1.6Mn1.6O4; lithium ion sieve; adsorption

摘要：采用水热合成法,以自制的碱式氧化锰和氢氧化锂为原料制备LiMnO2,经高温焙烧后制备富锂锂锰氧化物Li1.6Mn1.6O4,再经酸洗得到了锂离子筛。讨论了锂离子筛制备过程中涉及到的水热合成LiMnO2的锂锰比、反应温度、反应时间、焙烧温度和升温速率等工艺参数,研究了其对锂离子筛吸附锂性能的影响,筛选了适宜的合成条件。结果表明,当锂锰比为3.0、反应温度100℃、反应时间24h、焙烧温度400℃和升温速率10℃/min时得到的Li1.6Mn1.6O4,其酸洗产物-锂离子筛在锂离子浓度10mg/L的LiCl水溶液中前3h吸附速率很快,锂吸附量达到27mg/g,经过24h后达到吸附平衡,吸附量为34mg/g左右。
LiMnO2was synthesized by hydrothermal method with MnOOH and LiOH·H2O,and was then calcined at high temperature to prepare rich-lithium lithium manganese oxide Li1.6Mn1.6O4,the precursor of lithium ion sieve.The synthesis conditions of lithium ion sieve were studied,such as the lithium manganese ratio in the preparation process of LiMnO2,reaction temperature,reaction time,calcining temperature and heating rate.After studying their effects on the adsorption performance of lithium ion sieve,the appropriate synthetic conditions were selected,which were 3.0,100℃,24 h,400℃and 10℃/min,respectively.The adsorption went on smoothly in the first 3hours,and the final uptake of lithium reached27mg/g when the initial concentration of lithium was 10mg/L.After 24 hours,the lithium adsorption balance came close,and the final uptake was about 34mg/g.