Process of preparing zirconium oxide nano powder by supersonic sol-gel process

Abstract

The invention discloses a method of preparing ZrO2 nano powder by ultrasonic sol-gel method, including the following steps: adding a certain amount of ammonia water to a reactor, and during continuously stirring, dropping in zirconium oxychloride solution at a proper speed; making ultrasonic action; ageing; washing zirconium oxychloride colloid by distilled water until no residual ions exist, and in washing, applying ultrasonic action; drying the prepared wet gel by anhydrous alcohol and grinding, burning at temperature 500-750 deg.C for 2 h and obtaining ZrO2 nano powder. It combines the ultrasonic technique with the sol-gel method to prepare ZrO2 nano powder, achieving remarkable effect and able to produce obvious social and economical benefits.

Description

technical field

[0001] The invention relates to a preparation method of zirconia nano-powder, in particular, the coupling of ultrasonic technology and sol-gel preparation technology is used for the preparation of zirconia nano-powder. Background technique

[0002] There are many methods for preparing zirconia nanopowders, including gas-phase method and liquid-phase method. The liquid-phase chemical method has a stronger competitive advantage, because the industrial process control and equipment amplification technology related to this method have already been developed. More mature and less expensive. Liquid-phase methods include sol-gel method, alcohol salt hydrolysis method, hydrothermal method, emulsion method and co-precipitation method, etc. Among them, sol-gel method is a method that is particularly valued in liquid-phase wet chemical method. The advantages of low temperature, simple process and easy control are an effective method for industrial production. However,...