Violet Tungsten Oxide (VTO or TVO) is the abbreviation of purple tungsten oxide. Violet tungsten is the most special kind of purple powder in the crystal structure of tungsten oxide, which is needle-shaped or rod-shaped. The chemical formula of violet tungsten is W18O49 or WO2.72 , the molecular weight is 227.36. Violet tungsten (TVO) powder has the largest mesopore volume, the smallest micropore volume, the narrowest pore size distribution, the smallest fractal dimension and the largest average pore size, which is conducive to hydrogen reduction to produce ultra-fine tungsten powder without It is beneficial to the doping process, and it is a unique crystal structure, so it is used to prepare fine tungsten powder and fine tungsten carbide powder. Violet tungsten is obtained by reacting pure ammonium paratungstate in argon, and then deoxidizes violet tungsten to make tungsten powder particles. (Purity: 99.99%, dew point -40°C).
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