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ＭｎＯ－４和Ｍｎ２＋在酸性条件和一定温度下，用氧化还原方法制得了高结晶度的Ｃｒｙｐｔｏｍｅｌａｎｅ型锰氧化物．用Ｘ射线粉末衍射法（ＸＲＤ）、傅里叶红外光谱法（ＦＴ－ＩＲ）、热重－微商热重差热分析法（ＴＧ－ＤＴＧ／ＤＴＡ）、透射电子显微镜法（ＴＥＭ）等方法对它进行了表征．研究表明，该Ｃｒｙｐｔｏｍｅｌａｎｅ中可能存在两种不同热力学性质的Ｃｒｙｐｔｏｍｅｌａｎｅ，加热Ｃｒｙｐｔｏｍｅｌａｎｅ到６００℃时，热稳定性较差的那部分转化为Ｍｎ２Ｏ３；在６００～８７０℃，Ｃｒｙｐｔｏｍｅ－ｌａｎｅ和Ｍｎ２Ｏ３共同存在；８７０℃，样品完全转化为Ｍｎ２Ｏ３；到９４０℃则Ｍｎ２Ｏ３再度失氧生成Ｍｎ３Ｏ４．另在Ｃｒｙｐ－ｔｏｍｅｌａｎｅ中存在Ｌ酸和Ｂ酸，且Ｂ酸强于Ｌ酸．
MnO-4 and Mn2 + have high crystallinity of Cryptomelane manganese oxide prepared by oxidation-reduction method under acidic condition and under certain temperature. The structures of the samples were characterized by X-ray powder diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), TG-DTG / DTA and TEM It was characterized. The results show that Cryptomelane may have two different thermodynamic properties in Cryptomelane. Cryptomelane is converted into Mn2O3 by heating Cryptomelane to 600 ℃ with poor thermal stability; Cryptomelaway and Mn2O3 co-exist at 600 ~ 870 ℃; 870 ℃, the sample completely converted to Mn2O3; to 940 ℃ then Mn2O3 again oxygen to generate Mn3O4. In addition, there are L acid and B acid in Cryp-tomelane, and B acid is stronger than L acid.