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Nitrogen-enriched hollow hybrid carbon catalytic material as well as preparation method and application thereof

A carbon catalysis and enrichment technology, applied in chemical instruments and methods, physical/chemical process catalysts, separation methods, etc., can solve the problems of low nitrogen introduction, underdeveloped pore structure, and few applications, and achieve high nitrogen content. , Small environmental pollution, high activity effect

Active Publication Date: 2021-07-23
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, when MOF is used as a raw material, the carbon-based material has a low introduction of nitrogen and an undeveloped pore structure; and it is rarely used in the field of low-temperature plasma synergistic catalysis.

Method used

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  • Nitrogen-enriched hollow hybrid carbon catalytic material as well as preparation method and application thereof
  • Nitrogen-enriched hollow hybrid carbon catalytic material as well as preparation method and application thereof
  • Nitrogen-enriched hollow hybrid carbon catalytic material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] A kind of method for preparing monodisperse Zn-ZIF, specifically finish according to the following steps:

[0080] Zinc nitrate hexahydrate (Zn(NO 3 ) 2 ·6H 2 O) and manganese nitrate (Mn(NO 3 ) 2 ) was dissolved in methanol to form a homogeneous metal solution; finally, the metal solution was quickly poured into a methanol solution containing 2-methylimidazole under stirring; left to react at room temperature for 24 hours, filtered, washed twice with water, and washed with methanol 3 times, and then dried at a temperature of 100°C for 8 hours to obtain Zn-ZIF;

[0081] Zn(NO 3 ) 2 ·6H 2 The concentration of O is 100mmol / L;

[0082] Mn(NO 3 ) 2 The concentration is 0mmol / L;

[0083] The concentration of 2-methylimidazole in the methanol solution of 2-methylimidazole described in the step is 500mmol / L;

[0084] The volume ratio of the metal solution described in the step to the methanol solution of 2-methylimidazole is 1:1.

[0085] figure 1 For the SEM fig...

Embodiment 2

[0087] A kind of method for preparing monodisperse Mn-Zn-ZIF, specifically finish according to the following steps:

[0088] Zinc nitrate hexahydrate (Zn(NO 3 ) 2 ·6H 2 O) and manganese nitrate (Mn(NO 3 ) 2 ) was dissolved in methanol to form a homogeneous metal solution; finally, the metal solution was quickly poured into a methanol solution containing 2-methylimidazole under stirring; left to react at room temperature for 24 hours, filtered, washed twice with water, and washed with methanol 3 times, and then dried at a temperature of 100°C for 8 hours to obtain Mn-Zn-ZIF;

[0089] Zn(NO 3 ) 2 ·6H 2 The concentration of O is 100mmol / L;

[0090] Mn(NO 3 ) 2The concentration is 10mmol / L;

[0091] The concentration of 2-methylimidazole in the methanol solution of 2-methylimidazole described in the step is 500mmol / L;

[0092] The volume ratio of the metal solution described in the step to the methanol solution of 2-methylimidazole is 1:1.

[0093] figure 2 For the ...

Embodiment 3

[0095] A kind of method for preparing monodisperse Mn-Zn-ZIF, specifically finish according to the following steps:

[0096] Zinc nitrate hexahydrate (Zn(NO 3 ) 2 ·6H 2 O) and manganese nitrate (Mn(NO 3 ) 2 ) was dissolved in methanol to form a homogeneous metal solution; finally, the metal solution was quickly poured into a methanol solution containing 2-methylimidazole under stirring; left to react at room temperature for 24 hours, filtered, washed twice with water, and washed with methanol 3 times, and then dried at a temperature of 100°C for 8 hours to obtain Mn-Zn-ZIF;

[0097] Zn(NO 3 ) 2 ·6H 2 The concentration of O is 100mmol / L;

[0098] Mn(NO 3 ) 2 The concentration is 20mmol / L;

[0099] The concentration of 2-methylimidazole in the methanol solution of 2-methylimidazole described in the step is 500mmol / L;

[0100] The volume ratio of the metal solution described in the step to the methanol solution of 2-methylimidazole is 1:1.

[0101] image 3 For the ...

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Abstract

The invention discloses a nitrogen-enriched hollow hybrid carbon catalytic material and a preparation method and application thereof. The preparation method comprises the steps of: adding Mn-Zn-ZIF and a triblock copolymer into deionized water to obtain a solution I; dissolving 1, 3, 5-trimethylbenzene and ammonia water in absolute ethyl alcohol to form a transparent solution II; mixing the solution I and the solution II to obtain a mixed solution, adding the mixed solution into an aqueous solution of dopamine hydrochloride, and reacting to obtain Mn-Zn-ZIF@PDA; and carbonizing the Mn-Zn-ZIF@PDA in an inert atmosphere to obtain the nitrogen-enriched hollow hybrid carbon catalytic material. The material has high nitrogen content, high specific surface area and high pore volume, contains abundant adsorption and active sites on the surface, and can be used for low-temperature plasma coordinated catalytic degradation of toluene, so that the degradation efficiency of toluene can be remarkably improved, and the generation of a secondary pollutant O3 can be effectively inhibited.

Description

technical field [0001] The present invention relates to a low-temperature plasma synergistic catalytic oxidation of volatile organic compounds (VOCs) material, in particular to a nitrogen-enriched hollow hybrid carbon catalytic material and its preparation method and application. Background technique [0002] As a class of important indoor and air pollutants, VOCs pose a huge threat to the environment and human health. Toluene (C 7 h 8 ) is not only a typical VOC emitted during industrial production, but also an important raw material for the synthesis of organic chemicals. It is considered to be an important precursor for highly polluting molecules and the formation of photochemical smog and organic aerosols. Therefore, C 7 h 8 Emission control has received extensive attention from researchers around the world. Nowadays, a variety of technologies have been used to remove VOCs, such as physical adsorption, chemical absorption, high-temperature incineration, and catalyti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24B01J35/02B01J35/10B01D53/86B01D53/72
CPCB01J27/24B01D53/864B01D2257/708B01J35/618B01J35/638B01J35/40Y02A50/20
Inventor 何炽陈长伟马牧笛姜泽宇冯祥波
Owner XI AN JIAOTONG UNIV
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