湿法冶金Issue(6)：487-492,6.DOI:10.13355/j.cnki.sfyj.2014.06.19
MnO2·0．5 H2O锂离子筛吸附剂制备条件对其性能的影响
Effect of Synthesis Conditions on Properties of MnO2 · 0 .5H2 O Lithium Ion-Sieve Adsorbent
摘要
Abstract
By orthogonal experimental method ,the effects of synthesis factors on the performances of lithium ion‐sieve adsorbent MnO2 · 0 .5H2 O were studied .The mainly synthesis factors are hydrothermal temperature ,n(Li)∶ n(Mn) ,hydrothermal reaction time ,calcination temperature and calcination time .The results show that the factors affect the absorption capacity of the lithium ion‐sieve ,but the loss ratio of dissolved Mn has no significant change .The optimal conditions for preparation of lithium ion‐sieve have determined such as hydrothermal temperature of 230 ℃ ,lithium‐manganese molar ratio of 5∶1 ,reaction time of 13 h ,calcination temperature of 450 ℃ and calcination time of 6h .Ten cycles absorption/desorption experiments using the lithium ion‐sieve prepared under optimal conditions were performed .The absorption capacity in first absorption process is 37 .18 mg/g . The absorption capacity remain 36 .11 mg/g after ten consecutive cycles of absorption desorption .The loss ratio of dissolved Mn is lower in these processes .The samples ,which before and after absorption desorption process ,were characterized by XRD .The results show that the samples always maintain Li1 .6 M n1 .6 O4 spinel structure .关键词
MnO2·0.5H2O/吸附剂/制备/正交试验/影响/优化Key words
M nO2 · 0 .5H2 O/adsorbent/preparation/orthogonal experiment/effect/optimization分类
化学化工引用本文复制引用
石西昌,唐天罡,尹世豪,徐徽,陈亚,杨喜云..MnO2·0．5 H2O锂离子筛吸附剂制备条件对其性能的影响[J].湿法冶金,2014,(6):487-492,6.基金项目
国家“十一五”科技支撑计划项目（2008BAB35B04）。 （）
