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Preparation method of superfine nickel protoxide

A technology of nickelous oxide and nickel source, applied in the preparation of nickel compounds, chemical instruments and methods, nickel oxide/nickel hydroxide, etc. Complex operation and other problems, to achieve the effect of simple preparation steps, small particle size, and simplified impurity removal operations

Pending Publication Date: 2021-06-04
科立鑫(阳江)新能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a method for preparing ultrafine nickelous oxide, to solve the irregular shape and uncontrollable size of nickelous oxide particles obtained in the prior art, the obtained nickelous oxide powder is easy to contain sodium, and the subsequent purification operation is complicated , low product quality and other issues

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A kind of preparation method of superfine nickelous oxide, comprises the following steps:

[0040] Step 1: Preparation of precursor nickel oxalate powder: adding nickel source and oxalic acid after impurity removal to deionized water successively, after mixing evenly, to obtain a mixed solution, adding a surfactant to the mixed solution, stirring at 250r / min, and waiting After the temperature of the solution reached 78°C, it was reacted at a constant temperature. During the process, the pH of the solution was adjusted with ammonia water so that the pH of the solution was 8.0. After stirring at 600r / min for 30 minutes, it was naturally cooled to room temperature, filtered, washed with water 4 times, and added with ethanol for a total of 30 minutes. After boiling, dry at 50°C for 1.5h to obtain precursor nickel oxalate powder, wherein the dosage ratio of nickel source, oxalic acid, surfactant, and deionized water is 3mol:4mol:1g:20L;

[0041]Step 2: Calcination of the pre...

Embodiment 2

[0051] A kind of preparation method of superfine nickelous oxide, comprises the following steps:

[0052] Step 1: Preparation of precursor nickel oxalate powder: adding nickel source and oxalic acid after impurity removal to deionized water successively, after mixing evenly, to obtain a mixed solution, adding a surfactant to the mixed solution, stirring at 250r / min, and waiting After the temperature of the solution reached 78°C, it was reacted at a constant temperature. During the process, the pH of the solution was adjusted with ammonia water so that the pH value of the solution was 8.2. After stirring at 600r / min for 30 minutes, it was naturally cooled to room temperature, filtered, washed 4 times with water, and added ethanol for a total of 30 minutes. After boiling, dry at 50°C for 1.5h to obtain precursor nickel oxalate powder, wherein the dosage ratio of nickel source, oxalic acid, surfactant, and deionized water is 7.5mol:8mol:1g:11L;

[0053] Step 2: Calcination of the...

Embodiment 3

[0063] A kind of preparation method of superfine nickelous oxide, comprises the following steps:

[0064] Step 1: Preparation of precursor nickel oxalate powder: adding nickel source and oxalic acid after impurity removal to deionized water successively, after mixing evenly, to obtain a mixed solution, adding a surfactant to the mixed solution, stirring at 250r / min, and waiting After the temperature of the solution reached 78°C, it was reacted at a constant temperature. During the process, the pH of the solution was adjusted with ammonia water so that the pH of the solution was 8.2, 600r / min. After stirring for 30 minutes, it was naturally cooled to room temperature, filtered, washed 4 times with water, and added ethanol for a total of After boiling, dry at 50°C for 1.5h to obtain the precursor nickel oxalate powder, wherein the dosage ratio of nickel source, oxalic acid, surfactant, and deionized water is 2mol:2.4mol:3g:25L;

[0065] Step 2: Calcination of the precursor nicke...

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PUM

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Abstract

The invention provides a preparation method of superfine nickel protoxide. The preparation method comprises the following steps: step 1, preparing precursor nickel oxalate powder; 2, calcining precursor nickel oxalate powder; and 3, purifying the crude product. According to the method, the nickel source is firstly subjected to impurity removal, the nickel source containing few impurity ions is obtained, impurity metal ions are reduced fundamentally, the impurity removal operation of the crude nickel protoxide finished product is simplified, the quality of the nickel protoxide powder is improved, and meanwhile, metal cations are not introduced in the impurity removal process of the nickel source; a rosin-based surfactant is added into a reaction system of the impurity-removed nickel source, oxalic acid and ammonia water, so that the uniformity of the shape and size of the obtained precursor nickel oxalate powder particles is ensured, the particle size of the obtained precursor nickel oxalate powder particles is smaller, and the particle size of the final nickel protoxide powder is further controlled.

Description

technical field [0001] The invention belongs to the technical field of nonferrous metal powders, and in particular relates to a preparation method of ultrafine nickelous oxide. Background technique [0002] Nickel oxide is a light green or dark green powdery solid, which has good catalytic activity, ferromagnetism, heat-sensing gas-sensing and electroluminescent properties, and can be used as a p-type semiconductor material with excellent electrochemical properties and chemical stability. An important inorganic functional material, widely used in electronic information, metallurgy, chemical industry and other fields of national defense, security and social life. In addition, nickelous oxide can also be used to produce nickel-zinc-iron oxides, catalysts, semiconductors (such as pressure sensitive, thermistors), etc., as well as powder raw materials for glass and ceramic coloring. [0003] If NiO is made into ultra-fine powder grade, its electrochemical performance and cataly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G53/04C01G53/10C01G53/08C01G53/09C01G53/00
CPCC01G53/04C01G53/10C01G53/08C01G53/09C01G53/00C01G53/003C01P2006/80C01P2006/90C01P2004/61
Inventor 郑良明曹刚侯意全张玉青
Owner 科立鑫(阳江)新能源有限公司