Preparation of Manganese Oxide and Its Adsorption Properties  

作　　者：贺跃 王海峰 YANG Pan WANG Song CHEN Xiaoliang YANG Chunyuan 王家伟 HE Yue;WANG Haifeng;YANG Pan;WANG Song;CHEN Xiaoliang;YANG Chunyuan;WANG Jiawei(School of Materials and Metallurgy,Guizhou University,Guiyang 550025,China;Guizhou Provincial Engineering Technology Research Center of Manganese Materials for Batteries,Tongren Guizhou 554300,China;Guizhou Provincial Key Laboratory of Metallurgical Engineering and Energy Saving,Guiyang 550025,China)

机构地区：[1]School of Materials and Metallurgy,Guizhou University,Guiyang 550025,China [2]Guizhou Provincial Engineering Technology Research Center of Manganese Materials for Batteries,Tongren Guizhou 554300,China [3]Guizhou Provincial Key Laboratory of Metallurgical Engineering and Energy Saving,Guiyang 550025,China

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2024年第4期1031-1040,共10页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the National Natural Science Foundation of China(No.51864012);the Key Projects Supported by Science and Technology in Guizhou Province(No.[2002]KEY020);the Major Special Projects in Guizhou Province(No.[2022]003);the Guizhou Provincial Science Cooperation Program(Nos.[2016]5302,[2017]5788,[2018]5781,[2019]1411,and[2019]2841);the Major Special Projects in Tongren City,Guizhou Province(No.[2021]13)。

摘　　要：The in-situ oxidation of manganese sulfate solution with H2O_(2),sodium hypochlorite,potassium permanganate and oxygen as oxidants was investigated by means of SEM,EDS,XRD,BET and infrared analysis,and the effects of different oxidants on the morphology,phase composition,surface properties and specific surface area of manganese oxides were investigated.The experimental results show that the diameter of manganese oxide particles prepared with H_(2)O_(2)is the smallest,about 50 nm,and the specific surface area is the largest,63.8764 m^(2)/g.It has the advantages of abundant surface hydroxyl groups,no introduction of other impurities and large adsorption potential.It is most suitable to be used as an oxidant for oxidizing manganese sulfate solution to prepare manganese oxide by in-situ oxidation.Nano manganese oxide prepard by H_(2)O_(2)in-situ oxidation method is used as adsorbent to adsorb cobalt and nickel impurities in manganese sulfate.When the reaction pH is 6,the reaction time is 30min and the amount of adsorbent is 1.0 g,the adsorption rates of cobalt and nickel impurities in 100ml manganese sulfate solution are 97.59%and 97.67%,respectively.The residual amounts of cobalt and nickel meet the industrial process standard of first-class products(Co,Ni w/%≤0.005)of high-purity manganese sulfate(Hg/t4823-2015)for batteries.The study plays a guiding role in the preparation and regulation of manganese oxide,and provides a new method with high efficiency,purity and adsorbent availability for the preparation of high-purity manganese sulfate solution.

关 键 词：manganese oxide in situ oxidation ADSORBENT regulation mechanism PHYSICAL chemical properties 

分 类 号：TQ137.12[化学工程—无机化工] TQ424