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Metal nitride@nitrogen-containing mesoporous carbon nanosphere and preparation method thereof

A technology of nano-carbon spheres and nitrides, which is applied in the direction of nano-carbon, nitrogen-metal/silicon/boron binary compounds, nitrogen compounds, etc., which can solve the problem of insufficient loading, the particle size of the active center cannot reach the ideal state, and the specific surface area low cost, low cost, high industrial application value, and large specific surface area

Active Publication Date: 2019-12-13
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the prior art, the method of nano-carbon supported metal nitrides is mainly the impregnation method, but the metal nitrides prepared by the impregnation method have a low specific surface area and a serious shortage of loading capacity. The particle size of the active center cannot reach the ideal state

Method used

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  • Metal nitride@nitrogen-containing mesoporous carbon nanosphere and preparation method thereof
  • Metal nitride@nitrogen-containing mesoporous carbon nanosphere and preparation method thereof
  • Metal nitride@nitrogen-containing mesoporous carbon nanosphere and preparation method thereof

Examples

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Effect test

Embodiment 1

[0047] Weigh 500ml of ethanol aqueous solution (volume ratio of ethanol: water is 1:1), dissolve 6g of F127 in the ethanol aqueous solution, adjust the speed to 700 rpm and stir for 2h, add 3g of dopamine, continue stirring for 2h, weigh 2.6 g nickel nitrate hexahydrate, dissolved in 3ml concentrated hydrochloric acid, and slowly added dropwise to the dopamine solution, then stirred for 2h. Take 15ml of mesitylene and slowly drop into the above solution, and stir again for 4 hours; slowly add 10ml of concentrated ammonia solution dropwise to the stirred solution, and stir and react at 30°C for 3 hours; alternately centrifuge the obtained solution with deionized water and ethanol Wash more than 3 times and dry at 50°C. Then carry out reduction, the program of reduction is 3°C / min to 300°C, hold for 3h, then 2°C / min to 550°C, hold for 4h, cool down.

[0048] The specific surface area of ​​the obtained nanometer mesoporous carbon sphere is 400m 2 / g.

[0049] figure 1 It is a...

Embodiment 2

[0052] Adjust nickel nitrate hexahydrate to 0.8g, and other steps are the same as in Example 1.

[0053] The specific surface area of ​​the obtained nanometer mesoporous carbon sphere is 559m 2 / g.

Embodiment 3

[0055] Nickel nitrate hexahydrate was adjusted to 1.4g, and other steps were the same as in Example 1.

[0056] The specific surface area of ​​the obtained nanometer mesoporous carbon sphere is 482m 2 / g.

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Abstract

The invention belongs to the technical field of organic synthesis and specifically relates to a metal nitride@nitrogen-containing mesoporous carbon nanosphere and a preparation method thereof. A metalnitride@nitrogen-containing mesoporous carbon catalytic material involved in the invention is a flower-like nitride nano-carbon sphere composed of metal nitride coated with nitrogen-containing mesoporous carbon, and involved metal is Ni, Co, Fe, W and the like. The wrapping effect of the nitrogen-containing mesoporous carbon is beneficial to the high dispersion of the metal nitride, and the particle size of the metal nitride can be kept at about 1 nm while the content of the metal nitride is increased. The preparation method disclosed by the invention is simple in process; the metal nitride is uniformly distributed; high dispersity and high stability are obtained; and the catalytic material has long service life and good industrial application prospects.

Description

technical field [0001] The invention belongs to the technical field of organic synthesis, and specifically relates to a metal nitride@nitrogen-containing mesoporous carbon nano-carbon sphere and a preparation method thereof. Background technique [0002] Nanocarbon materials exist in various shapes, such as film, monolith, rod, fiber, single crystal, and sphere. Carbon nanomaterials with different shapes have different applications. For example: spherical carbon materials with uniform particle size can be applied to chromatography; carbon thin films or transparent carbon monoliths with better interfacial effects can be applied to sensors and separation applications; monolithic blocks with uniform texture, high bulk density and high strength Shaped carbons can be used for optical and electrochemical applications. [0003] Among the porous carbon materials with different morphologies, spherical nano-carbon materials have become popular due to their rich pore structure, large...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/15C01B21/06B82Y30/00B01J27/24
CPCC01B32/15C01B21/0622C01B21/062B82Y30/00B01J27/24C01P2004/80C01P2004/04C01P2006/12B01J35/39Y02W10/37
Inventor 鲁墨弘张朋柴恭璞沈栩铖王东磊向方远李明时张伟
Owner CHANGZHOU UNIV