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is an inorganic compound with the molecular formula GeO2, which is the dioxide of germanium, and the electronic formula is the same as that of carbon dioxide. Germanium dioxide is mainly used to make metal germanium, and it is also used as a material for spectroscopy and semiconductor.
Germanium Dioxide Properties
Germanium dioxide is a white powder or colorless crystal. There are two types: a slightly soluble hexagonal crystal system (stable at low temperature) and an insoluble tetragonal crystal system. Its transformation temperature is 1033degC.
Germanium dioxide is insoluble in water and hydrochloric acid, but soluble in lye to generate germanate. Germanium dioxide with a rutile-like structure is more soluble in water than hexagonal germanium dioxide, and can produce germanic acid when it interacts with water. When germanium dioxide and germanium powder are heated together at 1000degC, germanium monoxide can be obtained.
Germanium Dioxide Applications
1. Germanium dioxide is used to make germanium and also used in the electronics industry.
2. Germanium dioxide is used as a semiconductor material. It is made by heating and oxidizing germanium or hydrolyzing germanium tetrachloride.
3. Germanium dioxide is used as a raw material for the preparation of metallic germanium and other germanium compounds, as a catalyst in the preparation of polyethylene terephthalate resin, as well as a spectroscopic analysis and semiconductor material.
4. Germanium dioxide can be used to produce optical glass phosphors, which can be used as a catalyst for conversion during petroleum refining, dehydrogenation, adjustment of gasoline fractions, color film and polyester fiber production.
5. Germanium dioxide is also a catalyst for the polymerization reaction. Glass containing germanium dioxide has higher refractive index and dispersion properties, and can be used as a wide-angle camera and microscope lens.
6. With the development of technology, germanium dioxide is widely used to make high purity metal germanium, germanium compounds, chemical catalysts and pharmaceutical industry, PET resin, electronic devices, etc.
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