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Preparation method of analytically pure nickel sesquioxide

A technology of nickel trioxide and nickel nitrate, which is applied in the direction of nickel oxide/nickel hydroxide, etc., can solve the problems of high impurity content and low purity of nickel trioxide, and achieve low impurity content, easy control, and improved competitiveness Effect

Inactive Publication Date: 2011-04-27
TIANJIN CHEM REAGENT RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the preparation method of nickel trioxide is to dry the nickel nitrate and burn it at 250°C to obtain nickel oxide. The nickel oxide produced by this method has low purity and high impurity content, so it can only be used as ceramics, glass, etc. , enamel coloring pigments, cannot meet the needs of the rapid development of the electronics industry and aerospace technology

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A preparation method for analyzing pure nickel sesquioxide, the steps are:

[0018] (1), nickel nitrate iron removal:

[0019] Dissolve 1kg of nickel nitrate in 3000mL of distilled water, add 10g of hydrogen peroxide to oxidize, heat to 80°C, slowly add 85g / L sodium carbonate solution while stirring, control the pH value of the solution to 1.7, add dropwise for 1.5 hours, continue to add sodium carbonate to the solution When the pH value reaches 4.0, there is no iron ion in the solution, filter to obtain solution A;

[0020] (2) Calcium removal and magnesium ion removal:

[0021] Heat solution A to 85°C, slowly add ammonium fluoride, control the pH value of the solution to 5.0, let it stand for 2 hours, and filter to obtain solution B;

[0022] (3), synthetic nickel oxalate:

[0023] Heat and concentrate solution B at 50°C to a relative density of 15°Be, add 1.04g / L oxalic acid solution while stirring, control the pH value of the solution to 4.5, and form a nickel ox...

Embodiment 2

[0027] A preparation method for analyzing pure nickel sesquioxide, the steps are:

[0028] (1), nickel nitrate iron removal:

[0029] Dissolve 1.2kg nickel nitrate in 3600mL distilled water, add 12g hydrogen peroxide to oxidize, heat to 85°C, slowly add 90g / L sodium carbonate solution while stirring, control the pH value of the solution to 2.0, add dropwise for 2 hours, continue to add sodium carbonate to The pH value of the solution reaches 4.5, and there is no iron ion in the solution, and is filtered to obtain solution A;

[0030] (2) Calcium removal and magnesium ion removal:

[0031] Heat solution A to 90°C, slowly add ammonium fluoride, control the pH value of the solution to 6.0, let it stand for 2.5 hours, and filter to obtain solution B;

[0032] (3), synthetic nickel oxalate:

[0033] Heat and concentrate solution B at 60°C to a relative density of 18°Be, add 1.05g / L oxalic acid solution while stirring, control the pH value of the solution to 5.0, and form a nicke...

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Abstract

The invention relates to the field of preparation methods of inorganic compounds, in particular to a preparation method of analytically pure nickel sesquioxide. The method comprises the steps of adding hydrogen peroxide to nickel nitrate solution for oxidation, adding sodium carbonate to remove iron ions, adding ammonium fluoride to remove calcium and magnesium ions, then reacting with oxalic acid to generate nickel oxalate and calcining nickel oxalate to obtain the analytically pure nickel sesquioxide. The method is easy to operate and control and the prepared analytically pure nickel sesquioxide has low impurity content and high purity, thus improving the market competitiveness of a product.

Description

technical field [0001] The invention relates to the field of preparation methods of inorganic compounds, in particular to a preparation method of analytically pure nickel sesquioxide. Background technique [0002] Analytical pure nickel trioxide can be used as electronic component materials, storage battery materials, etc., such as using its strong oxidation to make nickel-cadmium alkaline batteries, and can also be used to manufacture high-energy batteries for artificial satellites and spacecraft. At present, the preparation method of nickel trioxide is to dry the nickel nitrate and burn it at 250°C to obtain nickel oxide. The nickel oxide produced by this method has low purity and high impurity content, so it can only be used as ceramics, glass, etc. , The coloring pigment of enamel cannot meet the needs of the rapid development of the electronics industry and aerospace technology. Contents of the invention [0003] The purpose of the invention is to overcome the defici...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G53/04
Inventor 胡建华
Owner TIANJIN CHEM REAGENT RES INST
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