Physical and chemical properties of manganese oxide

Physical and chemical properties of manganese oxide

Manganese trioxide is a black cubic crystal, insoluble in water, acetic acid and ammonium chloride solution, but soluble in other inorganic acids. Heating to 1080 ℃ decomposes to generate Mn3O4 and O2. Dissolve in cold hydrochloric acid to form a brown solution Chemicalbook, and form a red solution in hot dilute sulfuric acid or concentrated sulfuric acid, decompose into MnO2 and manganese nitrate in hot nitric acid, and decompose into Mn3O4 by heating and release O2. It exists in two forms: α-Mn2O3 and γ-Mn2O3.

Mn2O3 production method

Dimanganese trioxide, α-type can be obtained by decomposing divalent manganese nitrate, carbonate or chloride, and hydride in the air to 600-800℃. The γ-type can be obtained by heating MnO2 at 500°C for 78 hours in a vacuum, or by dehydrating γ-MnO(OH).

Overview of manganese oxide Mn2O3

Manganese oxide Mn2O3 is an oxide with a chemical formula of Mn2O3, a molecular weight of 157.88, black cubic crystals, and a relative density of 4.50. Mn2O3 is different from many other transition metal oxides because it does not use corundum (Al2O3) structure. The two generally recognized forms of Mn2O3 are α-Mn2O3 and γ-Mn2O3. Mn2O3 is insoluble in water, acetic acid and ammonium chloride solution, soluble in other inorganic acids, soluble in cold hydrochloric acid to form a brown solution, forms a red solution in hot dilute sulfuric acid or concentrated sulfuric acid, and decomposes into MnO 2 and manganese nitrate in hot nitric acid. It is decomposed into Mn3O4 by heating and releases O2. Manganese oxide can be used in the printing and dyeing process of fabrics, and also in the oxidation process of carbon monoxide and organic matter. It can also be used to synthesize soft magnetic materials, or as an important basic material for the synthesis of lithium-ion batteries.

Heating MnO2 in air below 800°C will generate α-Mn2O3 (higher temperature will generate Mn3O4). γ-Mn2O3 can be prepared by oxidation of manganese (II) hydroxide and then dehydration. The preparation of many nanocrystalline Mn 2 O 3 has been reported, for example involving the oxidation of MnII salt or the synthesis of MnO 2 reduction.

Manganese (III) oxide is formed by the redox reaction in alkaline batteries

2 MnO2 + Zn→Mn2O3 + ZnO

Manganese (III) oxide should not be confused with MnOOH manganese (III) oxyhydroxide. Unlike Mn2O3, MnOOH is a compound that decomposes at about 300°C to form MnO2.

Application of manganese oxide Mn2O3

Manganese Oxide Mn2O3 is a highly insoluble, thermally stable source of manganese suitable for glass, optical and ceramic applications. Manganese oxide is a black/brown solid, high-purity (99.999%) manganese oxide (MnO) powder, which is the main natural source of manganese.

Manganese oxide mineral has been used for thousands of years-ancient people used to make pigments and transparent glass, and now it is used as manganese, catalyst and battery material. There are more than 30 kinds of manganese oxide minerals distributed in various geological environments.

1. Mn2O3 has a wide range of uses and can be used in the printing and dyeing process of fabrics.

2. Mn2O3 can effectively catalyze and oxidize organic pollutants and nitrogen oxides, and catalyze organic coupling reactions.

3. Mn2O3 can be used as the precursor of soft magnetic materials.

4. As a raw material for the synthesis of electrode materials for lithium-ion batteries.

Manganese oxide Mn2O3 price

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Suppliers of Manganese Oxide Mn2O3

As a global supplier of manganese oxide Mn2O3, Tanki New Materials Co., Ltd. has extensive experience in the performance, application and cost-effective manufacturing of advanced engineering materials. The company has successfully developed a series of powder materials (titanium oxide, silicon oxide, titanium oxide, etc.), high-purity target materials, functional ceramics and structural devices, and provides OEM services.