Preparing Glassy Tungsten Trioxide

You may have seen a wide variety of glass products in life, such as mobile phones glass, glass vases, glass windows, glass roofs, glass lid, glass cups, and so on. They all have one thing in common, and that is: they are transparent. But did you have seen the glassy tungsten trioxide? How it is prepared? Is it transparent?

Tungsten trioxide are yellow powder, it dissolves in water, dissolves in alkali, slightly dissolves in acid. It is mainly used to restore the production of calcined tungsten powder and tungsten carbide powder, and then for the production of carbide products, such as tool and die manufacturing. It also can be used in the manufacture of pure tungsten products, tungsten electrode; and the use of counterweight and radiation shielding material. In the shipbuilding industry, the tungsten trioxide is used as important anti-corrosion paint and coatings material. Due to extensive use of tungsten trioxide, more and more people increase research efforts on the tungsten trioxide, at present, the study shows that glassy tungsten trioxide is unique performance oxidation, it is able to meet the needs of production and processing areas.

Preparing glassy tungsten trioxide, the first steep is adding tungsten powder (diameter 1μm) 15% to hydrogen peroxide capacity of 25ml (H₂O₂), stirring for 3-10 minutes, and the tungsten powder is almost completely dissolved. As colorless solution, it is strongly acidic to remove small amount of undissolved impurities. The second steep is meshing Pt, Pt-plated to reduce the excess H₂O₂. Finally, drying solution at room environment, we can obtain paint yellow glassy tungsten trioxide.

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