Preparation method of spectroscopically pure zirconium dioxide

Abstract

The invention relates to a preparation method of spectroscopically pure zirconium dioxide, concretely comprising the following steps of: placing zirconium tetrachloride into a container, dissolving by adding distilled water, standing overnight, and filtering to obtain a zirconium oxychloride solution A; adding hydrochloric acid into the zirconium oxychloride solution A for acidification, precipitating zirconium oxychloride, swabbing-off zirconium oxychloride, dissolving by distilled water, adding hydrochloric acid into the solution, precipitating zirconium oxychloride, and swabbing-off to obtain B; calcining B, heating up to the temperature of 300-400 DEG C, keeping a constant temperature for 1-1.5h; continuously heating up to the temperature of 500-600 DEG C and keeping a constant temperature for 1.2-1.5h; heating up to the temperature of 750-800 DEGC, keeping a constant temperature for 5-6h, taking out, and cooling to obtain the spectroscopically pure zirconium dioxide. According to the preparation method, the spectroscopically pure zirconium dioxide is prepared by two-time acidification and two-time purification of zirconium tetrachloride by the use of hydrochloric acid. The preparation method provided by the invention requires low cost, is simple and is easy to control.

Description

technical field [0001] The invention belongs to the field of preparation methods of inorganic compounds, in particular to a preparation method of spectrally pure zirconia. Background technique [0002] Spectrally pure zirconia is widely used, especially in high-purity analytical reagents, high-purity zirconium salt coatings, manufacturing high-pressure, high-frequency ceramics, chemical glass and zirconia fibers, and infrared spectrometer light sources and X-ray photography. The current preparation method is that zirconium hydroxide is recrystallized with hydrochloric acid or methanol, and calcined at high temperature to obtain the finished product. The zirconia produced by this method has low purity and high impurity content, which cannot meet the application and needs of high-purity reagent synthesis, optical instruments and synthetic high-end products, electronic industry grinding and polishing materials, and semiconductor basic grinding and polishing. Contents of the i...

AI Technical Summary

Problems solved by technology

The zirconia produced by this method has low purity and high impurity content, which cannot meet the application and needs of high-purity reagent synthesis, optical instruments and synthetic high-end products, electronic industry grinding and polishing materials, and semiconductor basic grinding and polishing.