KxMnO2的溶胶-凝胶法制备及其表征

doi:10.3969/j.cnki.jdxb.2016.05.011

吉首大学学报（自然科学版）

K_xMnO₂的溶胶-凝胶法制备及其表征

贺平祥，刘波，杨玉环，邱优优，赵玖翼，刘生林，蒋剑波

（吉首大学化学化工学院，湖南吉首 416000）

出版日期:2016-09-25 发布日期:2016-10-01
通讯作者: 蒋剑波（1970—），男，湖南双牌人，吉首大学化学化工学院副教授，博士生，主要从事纳微结构无机非金属材料的制备及其电化学储能研究.
基金资助:
吉首大学大学生研究性学习与创新性实验项目（教通[2014]48号）

Sol-Gel Preparation and Characterization of K_xMnO₂

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

(College of Chemistry and Chemical Engineering,Jishou University,Jishou 416000,Hunan China)

Online:2016-09-25 Published:2016-10-01

摘要/Abstract

摘要：

以KHCO₃，Mn(Ac)2和柠檬酸（CA）为原料，采用溶胶-凝胶法制备含钾柠檬酸锰配合物凝胶前驱体，煅烧前驱体获得目标产物，并运用XRD，FTIR，SEM等分析手段对产物进行表征.实验结果表明，当n(Mn)∶n(CA)=1，n(K)∶n(Mn)=0.17~0.3，煅烧温度800 ℃时，可以获得一种结构与隐钾锰类似，含有Mn₈O₁₆隧道结构的锰基嵌钾化合物K_xMnO₂晶体，SEM结果显示其微观形貌表现为规则扁平状薄片.

关键词： KxMnO2, 锰基嵌钾化合物, 溶胶-凝胶法

Abstract:

The sol-gel preparation and characterization of Mn-based K-intercalating compounds K_xMnO₂ 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 K_xMnO₂ 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: K_xMnO₂, Mn-based K-intercalating compounds, sol-gel

贺平祥，刘波，杨玉环，邱优优，赵玖翼，刘生林，蒋剑波. K_xMnO₂的溶胶-凝胶法制备及其表征[J]. 吉首大学学报（自然科学版）, DOI: 10.3969/j.cnki.jdxb.2016.05.011.

HE Pingxiang,LIU Bo,YANG Yuhuan,QIU Youyou,ZHAO Jiuyi,LIU Shenglin,JIANG Jianbo. Sol-Gel Preparation and Characterization of K_xMnO₂[J]. Journal of Jishou University（Natural Sciences Edition), DOI: 10.3969/j.cnki.jdxb.2016.05.011.

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K_xMnO₂的溶胶-凝胶法制备及其表征

Sol-Gel Preparation and Characterization of K_xMnO₂

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