二氧化锰_10g

化学性质

分子式： MnO2 分子量: 86.94 熔点: 535° dec.

密度： 5.026 灵敏度： Ambient temperatures. 形态： Powder 溶解性： Insoluble in water, nitric acid, sulfuric acid. Soluble in HCl. In presence of hydrogen peroxide or oxalic acid soluble in dilute HNO{3} and H{2}SO{4}

参考文献

应用

As an oxidizing agent, source of metallic manganese, decolorizing glass, painting porcelain, as an analytical reagentManganese(IV) oxide is used as an oxidizing agent in organic synthesis such as oxidation of allylic/benzylic alcohols, as a textile dye, as a reducing agent, and as a component of dry cell batteries such as zinc-carbon battery and alkaline battery. It is also used in making pigments for glasses and ceramics, and drier for paints. Further it is used in the manufacture of manganese steel and several manganese derivatives including potassium permanganate, a powerful versatile oxidant. Catalytic hydration of nitriles to amides by flowing through manganese dioxide has been reported. Manganese dioxide supported on inorganic oxide can be used for oxidation of methylamine through CWAO (Catalytic Wet Air Oxidation). It has high potential as highly efficient and robust material for water oxidation reaction (WORs).

备注

At temperatures above 550°C, manganese(IV) oxide forms manganese(III) oxide and oxygen. It can slightly stain the skin, which can be washed off with some rubbing.

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