Journal of Jishou University(Natural Sciences Edition)

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Sol-Gel Preparation and Characterization of KxMnO2

HE Pingxiang,LIU Bo,YANG Yuhuan,QIU Youyou,ZHAO Jiuyi,LIU Shenglin,JIANG Jianbo   

  1. (College of Chemistry and Chemical Engineering,Jishou University,Jishou 416000,Hunan China)
  • Online:2016-09-25 Published:2016-10-01


The sol-gel preparation and characterization of Mn-based K-intercalating compounds KxMnO2 were investigated.The objected materials were obtained by calcining gel precursors of K-contained manganese citrate complexes through a sol-gel route with using KHCO3,Mn (Ac)2,and citric acid (CA) as raw materials,and the products were characterized by XRD,FTIR,and SEM.The results show that a crystal of K-intercalating compound KxMnO2 can be obtained which is cryptomelane-like in structure and has the channel structure of Mn8O16,when n(Mn)∶n(CA)=1,n(K)∶n(Mn)=0.17~0.3,and the calcining temperature is 800 ℃.The SEM image shows that the particles of this crystal compound have flake-like morphologies which are regular and flat.

Key words: KxMnO2, Mn-based K-intercalating compounds, sol-gel

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