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Nickel micro nanoparticle and preparation method thereof

A technology of micro-nano particles and nickel salts, which is applied in the field of micro-nano materials, can solve the problems of low catalytic activity, insufficient catalytic performance of nickel micro-nano materials, and no catalytic coupling reaction proposed, and achieves low price and simple preparation method Effect

Active Publication Date: 2015-06-03
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] First of all, professional organic chemists are not specific enough to study the catalytic properties of nickel micro-nano materials, and the catalytic selectivity for different reaction substrates needs to be improved.
Whether the structure, size, and morphology of nickel micro-nano materials will affect the catalytic performance has not been systematically studied, nor has it been proposed how to design nickel micro-nano catalysts to improve the efficiency of catalytic coupling reactions.
[0006] Secondly, compared with palladium catalysts, nickel micro-nano materials have low catalytic activity

Method used

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  • Nickel micro nanoparticle and preparation method thereof
  • Nickel micro nanoparticle and preparation method thereof
  • Nickel micro nanoparticle and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Prepare 50mL of 5mmol / L nickel sulfate aqueous solution and 15mmol / L sulfaquinoxaline sodium aqueous solution respectively, and set aside;

[0026] Take 5mL of 5mmol / L nickel sulfate solution and 5mL of 15mmol / L sodium sulfaquinoxaline aqueous solution and mix them, stir and ultrasonically react at 20°C for 24h, after the reaction is completed, let stand and age for 12h. The product obtained by the reaction was centrifuged, the clear liquid was discarded, and the remaining precipitate was washed three times with deionized water and ethanol respectively, ultrasonically dispersed, and dried to obtain sulfaquinoxaline nickel microparticles. The product was observed with a scanning electron microscope (SEM). figure 1 , the product is a granular particle with a size of about 300-800nm.

Embodiment 2

[0028] Prepare 50 mL each of 10 mmol / L nickel nitrate aqueous solution and 10 mmol / L sulfaquinoxaline sodium aqueous solution, and set aside;

[0029] Take 5mL of 10mmol / L nickel sulfate aqueous solution and 5mL of 10mmol / L sulfaquinoxaline sodium aqueous solution and mix them, stir and ultrasonically react at 80°C for 24h, after the reaction is completed, naturally cool to room temperature and stand for 12h. The product obtained by the reaction was centrifuged, the clear liquid was discarded, and the remaining precipitate was washed three times with deionized water and ethanol respectively, ultrasonically dispersed, and dried to obtain sulfaquinoxaline nickel microparticles. The product was observed with a scanning electron microscope (SEM). figure 1 , the product is a granular particle with a size of about 300-800nm.

Embodiment 3

[0031] Prepare 50 mL each of 10 mmol / L nickel chloride aqueous solution and 10 mmol / L sulfaquinoxaline sodium ethanol solution for subsequent use;

[0032] Take 5mL 10mmol / L nickel chloride aqueous solution and 5mL 10mmol / L sulfaquinoxaline sodium ethanol solution respectively, mix them, stir and ultrasonically react at 60°C for 20h, cool naturally to room temperature and let stand for 20h. The product obtained by the reaction was centrifuged, the clear liquid was discarded, and the remaining precipitate was washed three times with deionized water and ethanol respectively, ultrasonically dispersed, and dried to obtain sulfaquinoxaline nickel microparticles. The product was observed with a scanning electron microscope (SEM). figure 1 , the product is a granular particle with a size of 300-800nm.

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Abstract

The invention discloses a nickel micro nanoparticle and a preparation method thereof. The preparation method comprises the following steps: adding a certain quantity of nickel salt solution into a solution which contains sodium sulfaquinoxaline, performing centrifugation on products after reaction and aging at a certain temperature, leaving precipitate, washing the precipitate respectively with deionized water and ethanol, performing ultrasonic dispersion, and drying, so as to prepare the corresponding sulfaquinoxaline nickel micro nanoparticle. According to the preparation method, the preparation of metal micro nanoparticles through reaction to different nickel salts and sulfaquinoxaline is successfully realized, metal-ligand micro nanoparticles with uniform particle size are obtained, and excellent physical and chemical properties are provided. The sulfaquinoxaline nickel micro nanoparticle as a catalyst has good catalytic activity and wide application prospects in the field of catalysis. In a whole preparation process, the operation is simple, the cost of raw materials is low, the equipment investment is low, and mass production is facilitated.

Description

technical field [0001] The invention relates to the field of micro-nano materials, in particular to nickel micro-nano particles and a preparation method thereof. Background technique [0002] As an emerging science and technology with the most market application potential, nanotechnology has no doubt about its potential importance, and some developed countries have invested a lot of money in research work. For example, the United States first established a nano research center, and the Ministry of Culture, Education, Science and Technology of Japan listed nano technology as one of the four major research and development projects of materials science. research work. [0003] Nanoparticles, also called ultrafine particles, are located in the transition zone between atomic clusters and macroscopic objects. Such a system is neither a typical microscopic system nor a typical macroscopic system. It is a typical mesoscopic system, which has surface effects, Small size effect and ...

Claims

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Application Information

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IPC IPC(8): B22F9/24B82Y40/00C07D241/44B01J31/22C07C41/30C07C43/205C07C43/225
Inventor 周云龙李星赵亚云赵秀华
Owner NINGBO UNIV
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