Production process of subnanometer level cobalt oxide

Abstract

The production process of subnanometer level cobalt oxide includes compounding cobalt solution, ammonium bicarbonate solution and ammonium oxalate solution; preparing mixed cobalt carbonate and cobalt oxalate slurry; filtering, washing, roasting and sorting. The present invention introduces surfactant to reduce the grain size of cobalt oxalate, adopts mixed cobalt carbonate and cobalt oxalate slurry, washes with deionized water to eliminate alkali metal ion and alkali earth metal ion and raises the permeability of roasted material, so as to produce the subnanometer level cobalt oxide product with high purity and fine grain size. The product can meet the requirement for producing electronic elements.

Description

technical field [0001] The present invention belongs to cobalt oxide (Co 2 o 3 ) production method, particularly a method for producing high-purity, sub-nanometer cobalt oxide. The cobalt oxide produced by this method is especially suitable as a doping material for electronic components and devices such as lightning arresters, thermistors, varistors, and glass bulbs of picture tubes; it can also be used as a dyeing agent and bonding agent in the production of ceramics and hard alloys. agent. Background technique [0002] Cobalt oxide is widely used in electronics, chemical industry, glass, ceramics, cemented carbide and other fields; especially for cobalt oxide used in the electronics industry, it requires both low impurity content and fine particle size; however, it is difficult for cobalt oxide commonly produced at the same time meet these two requirements. For example: in the "Manufacturing Method of Nanoscale Cobalt Oxide" disclosed in the patent literature with the ...

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Problems solved by technology

[0003] The purpose of the present invention is to study and design a production method of sub-nanometer cobalt oxide in view of the disadvantages of the background technology, so as to solve the background technology or product with high impurity content, difficult washing and filtering, or large particles and high production cost; As well as issues affecting the quality of subsequent products, balance the relationship between product purity and particle size, achieve product purity and particle size, and improve the effect, efficiency, and product quality of washing and filtering impurities.