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Preparation method of high-purity nickel disulphide

A nickel disulfide, high-purity technology, applied in the direction of nickel sulfide, chemical instruments and methods, iron sulfide, etc., can solve the problems of complex process and high cost, and achieve the effect of simple process technology, cheap raw materials, and mild preparation conditions

Inactive Publication Date: 2017-03-15
乐山凯亚达光电科技有限公司
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a kind of preparation method of high-purity nickel disulfide to achieve the purpose of synthesis method with simple process and low cost, and solve the problems of complex process and high cost of the existing nickel disulfide preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Dissolve 6mmol nickel nitrate in 250mL deionized water, add nitric acid to adjust the pH value of the solution to 0.7, then add 35mmol thiourea, fully dissolve and move to a 300mL airtight hydrothermal reaction kettle, and place the nickel salt and sulfur-containing compound in a microwave environment Carry out hydrothermal reaction under low temperature, heat up to 180°C, react for 1.5 hours, take out the solution after the reaction, filter, wash with water, wash with alcohol, and vacuum dry to obtain 0.69g of nickel disulfide, with a purity of more than 99%, calculated as the reacted metal nickel , the yield of nickel disulfide was 92.1%.

Embodiment 2

[0014] Dissolve 6mmol of nickel sulfate in 250mL of deionized water, add sulfuric acid to adjust the pH value of the solution to 0.5, then add 35mmol of sodium sulfide, fully dissolve and move to a 300mL closed hydrothermal reaction kettle, and place the nickel salt and sulfur-containing compound in a microwave environment Carry out hydrothermal reaction under low temperature, heat up to 220°C, react for 3 hours, take out the solution after the reaction, filter, wash with water, wash with alcohol, and vacuum dry to obtain 0.66g of nickel disulfide, the purity is greater than 99%, calculated by the reacted metal nickel , the yield of nickel disulfide was 89.5%.

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Abstract

The invention discloses a preparation method of high-purity nickel disulphide, belonging to the technical field of chemical engineering. The preparation method comprises the steps of dissolving soluble nickel salt in deionized water to obtain a solution, dropwise adding acid to regulate the pH value of the solution to 0-3, adding a water-soluble sulfur-containing compound, stirring to completely dissolve to obtain a solution, adding the solution into a reaction kettle, carrying out hydrothermal reaction on the nickel salt and the sulfur-containing compound at a constant temperature of 180-220 DEG C for 1-3 hours, and carrying out water washing, alcohol washing and vacuum drying, so as to obtain high-purity nickel disulphide, wherein the molar ratio of sulfur to nickel is 4 to 10. By virtue of the preparation method, the problems of complex process and high cost of an existing nickel disulphide preparation method are solved.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a method for preparing high-purity nickel disulfide. Background technique [0002] Nickel sulfide is an electronic, energy and chemical material that has attracted more and more attention in recent years. It has a unique electronic structure, molecular structure and excellent optical, electrical and magnetic properties. Battery storage devices, infrared detectors, hydrodenitrogenation reactions, hydrodesulfurization reactions, etc. have broad industrial application prospects. Nickel sulfide is a very complex system, and there are many phase compositions with different ratios, such as Ni3S2, Ni6S5, Ni7S6, Ni9S8, NiS, Ni3S4 and NiS2. Therefore, it is very difficult to control the reaction process to prepare single-phase nickel sulfide powder. There are many ways to prepare NiS2 at present. Chinese patent CN 1240765A discloses a method for preparing high-purity NiS2: mi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G53/11C01G51/00C01G49/12
CPCC01G53/11C01G49/12C01G51/30C01P2006/80
Inventor 郭春雨陈俊陈云博于平于清炎干大强
Owner 乐山凯亚达光电科技有限公司
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