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用醋酸锰分别与柠檬酸、草酸和8-羟基喹啉在室温及低温下发生固相反应生成锰配合物，经热分解和酸处理等手段最终制备出纳米γ－MnO2用元素分析、化学分析、X射线衍射、热重／差热分析和透射电镜等测试手段对固相反应的可行性作了讨论，并对合成的样品进行了表征．从TEM照片上看，产物粒子呈球形，粒径多为20～30nm．酸处理可大大提高样品的氧化度，但酸化过程中粒子出现团聚现象，粒子形貌也有所改变，似有取向生长的趋势．文中还讨论了低温条件下利用固相反应制备纳米材料的原因．
Manganese acetate was respectively reacted with citric acid, oxalic acid and 8-hydroxyquinoline at room temperature and low temperature to produce manganese complex. The final analysis of the results showed that the nanometer γ-MnO2 was prepared by elemental analysis and chemical analysis by thermal decomposition and acid treatment , X-ray diffraction (XRD), thermogravimetric / differential thermal analysis (TEM) and transmission electron microscopy (TEM) were used to discuss the feasibility of the solid-state reaction. The synthesized samples were characterized. From the TEM photograph, the product particles are spherical, the particle size is mostly 20 ~ 30nm. Acid treatment can greatly improve the degree of oxidation of the sample, but the acidification process particles agglomeration phenomenon, the particle morphology has changed, it seems that the orientation of growth. The paper also discusses the reasons for the preparation of nanomaterials by solid state reaction at low temperature.