Ammonium metatungstate microspheres (AMT microspheres) are a special material whose characteristics are summarized below.
Chemical composition
The chemical formula of Ammonium Metatungstate (AMT) is (NH₄)₆[H₂W₁₂O₄₀], which is a compound salt composed of ammonium ions, hydrogen ions, tungsten element and oxygen element.
Physical form
Ammonium metatungstate microspheres usually have a spherical or near-spherical appearance, and their size is usually in the micrometer (μm) class.
These microspheres have a relatively uniform particle size distribution, which contributes to the stability of their performance in various applications.
Preparation Methods
Ammonium metatungstate microspheres can be prepared by methods such as spray drying. The basic principle of this method is that a solution, emulsion, suspension or paste is atomized into fine droplets by a sprayer, and then dried rapidly under the action of hot air to form microspheres. Ammonium metatungstate microspheres prepared by spray drying method are characterized by good sphericity and uniform particle size distribution.
Use and Characteristics
Ammonium metatungstate microspheres are one of the precursors of tungsten carbide (WC) catalysts, and the surface morphology and particle size distribution of WC particles are affected by the nature of the precursor, which in turn affects its catalytic activity. The high specific surface area and uniform particle size distribution of ammonium metatungstate microspheres help to improve the catalytic efficiency and stability of the catalyst.
Ammonium metatungstate microspheres can also be used as precursors for the production of tungsten powder and other tungsten compounds, which are widely used in the fields of electronics, aerospace and chemical industries.
Safety:
Although Ammonium Metatungstate Microspheres have a wide range of industrial applications, ingestion of the compound is toxic and may cause skin irritation if it comes into contact with the skin. Therefore, when using and storing Ammonium Metatungstate Microspheres, safety operation procedures should be strictly followed to ensure the safety of personnel and the environment.
In summary, ammonium metatungstate microsphere is a material with specific chemical composition, physical form and preparation method, which has a wide range of application prospects in the fields of catalysis, electronics, aerospace and chemical industry.
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