锰氧化物锂离子筛的掺杂改性及吸附性能研究
收稿日期: 2019-10-27
网络出版日期: 2020-04-22
基金资助
青海省自然科学基金项目(2018-ZJ-928Q);青海省盐湖资源化学重点实验室开放课题基金项目(2019-HYS-001);青海师范大学中青年教师科研基金资助项目;青海省高端创新人才“千人计划”项目
Research on doping modification and adsorption performance of manganese oxides lithium ion sieve
Received date: 2019-10-27
Online published: 2020-04-22
许乃才 , 黎四霞 , 曹佳佳 , 杨刚什尕 . 锰氧化物锂离子筛的掺杂改性及吸附性能研究[J]. 无机盐工业, 2020 , 52(4) : 37 -41 . DOI: 10.11962/1006-4990.2019-0297
Lithium manganese oxides precursor was synthesized by high-temperature solid phase method using manganese dioxide and lithium hydroxide as raw materials.Then manganese oxides lithium ion sieve was prepared by using ion-exchange technology and was used to adsorb Li + from aqueous solution.The effects of Al 3+ and La 3+ doping on the structure,morphology and absorption performance of manganese oxides lithium ion sieve was investigated.The products were characterized by pow-der X-ray diffraction(XRD),scanning electron microscope(SEM) and Fourier infrared spectroscopy(FTIR).The results showed that manganese oxides lithium ion sieve presents spinel type structure with flaky morphology and uniform dispersion. The products doped with Al 3+ and La 3+ still maintained spinel type structure,but the morphology changed,and showed irregular cubic and nanoparticles,respectively.The adsorption results showed the adsorption capacity of manganese oxides lithium ion sieve was greatly improved after doping.
Key words: manganese oxides; lithium ion sieve; adsorption; doping; morphology
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