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Layered porous nitrogen-doped carbon material as well as preparation method and application thereof

A technology of nitrogen-doped carbon and hydrothermal reaction, applied in separation methods, sulfur preparation/purification, chemical instruments and methods, etc., can solve the problems of poor selectivity, easy deactivation, small specific surface area, etc., to improve activity and Stability, high structural stability, large surface area effect

Pending Publication Date: 2020-01-17
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to address the deficiencies in the existing materials, to provide a layered porous nitrogen-doped carbon material catalyst with high specific surface area and rich active sites, and to solve the problem of the small specific surface area of ​​hydrogen sulfide selective oxidation catalysts in the prior art , Difficult access to active sites, poor selectivity, easy inactivation, etc.

Method used

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  • Layered porous nitrogen-doped carbon material as well as preparation method and application thereof
  • Layered porous nitrogen-doped carbon material as well as preparation method and application thereof
  • Layered porous nitrogen-doped carbon material as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Add 0.01 mol of ethylenediamine to 60 ml of N,N-dimethylformamide, then add 0.01 mol of pyromellitic dianhydride, stir at room temperature for 10 h to a transparent solution, heat at 180 °C for 12 h, centrifuge, and use DMF and ethanol were washed, dried at 80 °C, the dried samples were ground and placed in a tube furnace device. After room temperature, the synthesized samples were collected and labeled NPC-700.

Embodiment 2

[0036] Add 0.01 mol of ethylenediamine to 60 ml of N,N-dimethylformamide, then add 0.01 mol of pyromellitic dianhydride, stir at room temperature for 10 h to a transparent solution, heat at 180 °C for 12 h, centrifuge, and use DMF and ethanol were washed, dried at 80 °C, the dried samples were ground and placed in a tube furnace device. After room temperature, the synthesized samples were collected and labeled NPC-800.

Embodiment 3

[0038] Add 0.01 mol of ethylenediamine to 60 ml of N,N-dimethylformamide, then add 0.01 mol of pyromellitic dianhydride, stir at room temperature for 10 h to a transparent solution, heat at 180 °C for 12 h, centrifuge, and use Washed with DMF and ethanol, dried at 80 °C, the dried samples were ground and placed in a tube furnace. After room temperature, the synthesized samples were collected and labeled NPC-900.

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Abstract

The invention discloses a layered porous nitrogen-doped carbon material, a preparation method of the material and an application of the material in selective catalytic oxidation of H2S. The layered porous nitrogen-doped carbon material is prepared by using pyromellitic dianhydride and ethylenediamine as raw materials through a mild solvothermal method, and the material is used in the field of theselective catalytic oxidation of the hydrogen sulfide; the catalyst shows good activity, selectivity and stability in the selective catalytic oxidation reaction of the hydrogen sulfide; the application field of the nitrogen-doped carbon material is broadened, and an experimental basis is provided for the development of a catalyst for selective oxidation of the hydrogen sulfide; and the preparationmethod adopted by the invention is simple and easy to implement, and has a broad application prospect.

Description

technical field [0001] The invention belongs to the technical field of non-metallic catalytic materials, in particular to a layered porous nitrogen-doped carbon material and a preparation method thereof, and a method for selectively catalytic oxidation of H 2 Applications in S. Background technique [0002] Hydrogen Sulfide (H 2 S) Gas widely exists in the production process of natural gas, coal gasification and petroleum refining and chemical production, which will not only corrode pipelines, instruments and equipment, poison the catalyst and cause deactivation, but also affect product quality and cause environmental pollution. At the same time, hydrogen sulfide Can cause harm to humans and animals. Therefore, how to effectively deal with H 2 S gas is an urgent problem to be solved in the development process of oil industry and natural gas industry. [0003] Currently, H 2 The removal of S mainly adopts the Claus process. i.e. H 2 Partial combustion of S forms SO 2 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24B01J35/08B01J35/10C01B17/04
CPCB01J27/24B01D53/8612B01D53/52C10L3/103C01B17/0434B01J35/51B01J35/647
Inventor 江莉龙樊章加沈丽娟郑笑笑雷淦昌郑小海
Owner FUZHOU UNIV
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