Preparation method of white pure cerium oxide

Abstract

The invention discloses a preparation method of white pure cerium oxide. The preparation method comprises the following steps: adding yellow cerium oxide into deionized water to obtain a mixed solution a; ultrasonically treating the mixed solution a, adding the mixed solution an into a reactor, checking the gas tightness of the reactor, emptying the reactor with hydrogen after no gas leakage is checked, and introducing the hydrogen; and putting the reactor into a sand bath fluid with the temperature of 400-450 DEG C, reacting for 0.5-1 hour, filtering and washing after the reaction is finished, and then carrying out vacuum drying to obtain the white cerium dioxide; the white cerium dioxide is prepared by using the yellow cerium dioxide as a raw material by using the supercritical technology, the product is high in whiteness, small in particle size, and good in dispersibility, the preparation method is simple and feasible in process, free of any additive, green and environment-friendlyin the production process, and has no secondary pollution to the environment; and compared with a previous method, the preparation method has the advantages of low production cost and high synthesis yield.

Description

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AI Technical Summary

Benefits of technology

This technology involves making pure or fine powders called yttrium cerumoxide (ceria) through chemical reactions that produce tiny particles known as YC2O3. These minute crystals are then mixed into an acidic solution containing salt solutions at certain temperature levels for specific time periods. By adjusting these variables like pressures, temperatures and volume ratios between them, this new type of product becomes more effective when applied on various materials without causing harmful side products during manufacturing processes. It's highly dispersed evenly throughout it, which makes its use less expensive than other methods while still providing excellent results over their original purpose.

Problems solved by technology

In current technology, different ways have been developed to produce special type chemical compounds called cerumoxides (cerium dioxy) through various processes such as burning ceritite rocks containing calcium carbons like zirconium), crushing them down from their original size, mixing other substances together, heat treatment, dry milling, and sintering techniques. While these procedures provide technical benefits over existing ones but they also involve expensive equipment and require significant time and resources. Therefore, research has focused towards finding new methods without requiring excessive effort or expenses.

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