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Preparation of cerium oxide polishing powder by gas phase method and spray pyrolysis method
source：www.btslckj.cn | Release time：2022年04月02日Ceria rare earth polishing powder was prepared by gas phase method.
Gas phase method refers to the method that two or more simple substances or compounds react in the gas phase to form new nano compounds. Gas phase method includes low-pressure gas evaporation, gas condensation, active hydrogen molten metal reaction, sputtering, electric heating evaporation, mixing of volatile compounds, laser-induced chemical vapor deposition, etc.
Cerium oxide polishing powder was prepared by spray pyrolysis.
Ultrafine powders of rare earth cerium oxide have been prepared by spray pyrolysis. Because they have many advantages such as liquid phase and gas phase, they have become a new method to prepare rare earth ceria ultrafine powder in recent years.
Spray pyrolysis is a continuous process. The particle shape is uniform and controllable. It does not require filtration, cleaning, drying, crushing and calcination in various liquid phases. In the above process, the operation is simplified, the industrial production is promoted, the introduction of impurities and the destruction of crystal structure are avoided, so as to ensure the high purity and high activity of the product. At present, this method has been used to prepare some rare earth ceria nanoparticles, but it has not been reported in the preparation of nano dioxide. Therefore, conditional readers can try.
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