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A kind of nanocomposite material pmma@fe-n-c preparation method and application

A nano-composite material, nano-technology, applied in diamond and other directions, can solve the problems of affecting the synthesis process, high oxygen content, high cost, and achieve the effects of increasing contact opportunities, increasing contact area, and improving stability

Active Publication Date: 2021-11-23
HENAN HUANGHE WHIRLWIND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Based on the current reduction technology used in catalyst factories, the purpose of deoxygenation is achieved by using hydrogen and oxygen to react at high temperature and under nitrogen atmosphere. This method uses hydrogen, which is produced by pyrolysis of liquid ammonia. The liquid ammonia and hydrogen used are dangerous chemicals with high cost and high requirements on equipment and environment. The most important thing is that the oxygen content in the graphite powder as one of the raw materials is not well treated and the oxygen content is too high, thus Affect the subsequent synthesis process, thereby affecting the quality of diamond

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The preparation method of the nanocomposite material PMMA@Fe-N-C in this embodiment, the method is.

[0027] S1. Ultrasonic dispersion of nano-PMMA powder with a particle size of 50nm to 60nm in purified water, and ultrasonication for 1 hour to obtain a PMMA dispersion with a mass fraction of 11%.

[0028] S2. Dissolve 439mg of ferric nitrate nonahydrate and 3.39g of zinc nitrate hexahydrate in 500mL of methanol, and obtain mixed solution A after ultrasonication for 0.5h; dissolve 3.94g of dimethylimidazole in 500mL of methanol, and ultrasonicate for 0.5 After h, the mixed solution B was obtained; the mixed solution B was added to the mixed solution A, and after reflux reaction for 24 h under the condition of an oil bath at a temperature of 60 ° C, it was centrifuged and washed with ethanol for 3 times to obtain a carrier precursor.

[0029] S3. Dry the carrier precursor obtained in S2 under vacuum conditions at a temperature of 60°C for 8h, and then heat-treat it under...

Embodiment 2

[0036] The preparation method of the nanocomposite material PMMA@Fe-N-C in this embodiment, the method is.

[0037] S1. Ultrasonic dispersion of nano-PMMA powder with a particle size of 50nm to 60nm in purified water, ultrasonication for 2 hours, to obtain a PMMA dispersion with a mass fraction of 11%.

[0038] S2. Dissolve 439mg of ferric nitrate nonahydrate and 3.39g of zinc nitrate hexahydrate in 500mL of methanol, and obtain mixed solution A after ultrasonication for 0.5h; dissolve 3.94g of 2-methylimidazole in 500mL of methanol, and ultrasonically After 0.5 h, the mixed solution B was obtained; the mixed solution B was added to the mixed solution A, and after reflux reaction for 24 h under the condition of an oil bath at a temperature of 60° C., the carrier precursor was obtained by centrifugal washing with ethanol for 4 times.

[0039] S3. Dry the carrier precursor obtained in S2 under vacuum conditions at a temperature of 60°C for 8h, and then heat-treat it under a nitr...

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PUM

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Abstract

The invention provides a method for preparing a nanocomposite material PMMA@Fe-N-C, the method is: preparing a Fe-N-C carrier, then dispersing in a PMMA dispersion liquid and ultrasonically stirring to obtain a nanocomposite material PMMA@ Fe‑N‑C also provides applications for removing oxygen from raw materials for preparing diamonds, uniformly dispersing PMMA on the surface and internal voids of Fe‑N‑C carriers, and obtaining nanocomposite PMMA@Fe‑N ‑C, through the adsorption load of the Fe‑N‑C carrier, the contact opportunity between PMMA and oxygen is increased, and the effect of oxygen removal is improved.

Description

technical field [0001] The invention belongs to the technical field of oxygen removal for diamond raw materials, and in particular relates to a preparation method and application of a nanocomposite material PMMA@Fe-N-C. Background technique [0002] Based on the current reduction technology used in catalyst factories, the purpose of deoxygenation is achieved by using hydrogen and oxygen to react under high temperature and nitrogen atmosphere. This method uses hydrogen, which is produced by pyrolysis of liquid ammonia. The liquid ammonia and hydrogen used are dangerous chemicals with high cost and high requirements on equipment and environment. The most important thing is that the oxygen content in the graphite powder as one of the raw materials is not well treated and the oxygen content is too high, thus Affect the subsequent synthesis process, and then affect the quality of diamond. So there is an urgent need for a method that is both safe and easy to operate and has an ex...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L33/12C08K7/24C01B32/26
CPCC08K7/24C08K2201/006C01B32/26C08L33/12
Inventor 尚朝阳赵自勇张崇建蔡玉乐姜益华李振宇
Owner HENAN HUANGHE WHIRLWIND CO LTD
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