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Method for preparing graphite phase carbon nitride catalyst and application of graphite phase carbon nitride catalyst in H2S oxidation

A graphitic carbon nitride, catalytic oxidation technology, applied in the preparation/purification of sulfur, catalysts for physical/chemical processes, chemical instruments and methods, etc., can solve the problems of poor selectivity and easy deactivation, and achieve good activity and selection. properties, simple preparation method, and the effect of broadening the application field

Active Publication Date: 2017-06-30
FUZHOU UNIV ASSET MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The technical problem to be solved by the present invention is that H 2 S selective oxidation catalysts have defects such as poor selectivity and easy deactivation. 2 In the application of S aspect, the graphitic carbon nitride catalyst has a thin sheet nano-sheet structure with a high specific surface area, which can be used in the selective catalytic oxidation of H 2 S aspect has good catalytic activity and selectivity

Method used

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  • Method for preparing graphite phase carbon nitride catalyst and application of graphite phase carbon nitride catalyst in H2S oxidation
  • Method for preparing graphite phase carbon nitride catalyst and application of graphite phase carbon nitride catalyst in H2S oxidation
  • Method for preparing graphite phase carbon nitride catalyst and application of graphite phase carbon nitride catalyst in H2S oxidation

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Embodiment 1

[0037] Grind 6.0g of thiocyanuric acid into a powder with a particle size of 200 mesh, place it in a heating device, and raise the temperature to 500°C at a heating rate of 5°C / min in an air atmosphere, and perform thermal polymerization for 2h. After naturally cooling to room temperature, the synthesized samples were collected to obtain a graphite-phase carbon nitride catalyst with a nano-flake structure, which was named CNA-500.

Embodiment 2

[0039] Grind 6.0g of thiocyanuric acid into a powder with a particle size of 200 mesh, place it in a heating device, and raise the temperature to 525°C at a heating rate of 5°C / min in an air atmosphere, and perform thermal polymerization for 2h. After naturally cooling to room temperature, the synthesized samples were collected to obtain a graphite-phase carbon nitride catalyst with nanoflake structure, which was named CNA-525.

Embodiment 3

[0041] Grind 6.0g of thiocyanuric acid into a powder with a particle size of 200 mesh, place it in a heating device, and raise the temperature to 550°C at a rate of 5°C / min in an air atmosphere, and perform thermal polymerization for 2 hours. After naturally cooling to room temperature, the synthesized samples were collected to obtain a graphite-phase carbon nitride catalyst with a nano-flake structure, which was named CNA-550.

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Abstract

The invention discloses a method for preparing a graphite phase carbon nitride catalyst. The method comprises the following specific steps: grinding thiocyanuric acid serving as a precursor into powder, and putting into a heating device; then, heating the thiocyanuric acid powder to 500-600 DEG C in an air atmosphere, and performing thermal polymerization reaction for 2 hours; and cooling to room temperature after the reaction is completed so as to finally prepare the graphite phase carbon nitride catalyst having a nano-plate structure. The graphite phase carbon nitride catalyst has a plate nano-laminate structure with high specific surface area, and has excellent catalytic activity and selectivity when applied to selective catalytic oxidation of H2S.

Description

technical field [0001] The present invention relates to the preparation and application of a kind of environmental catalyst, in particular to the preparation method of graphite phase carbon nitride catalyst and its function in oxidation of H 2 S side application. Background technique [0002] Emissions from natural gas processing and petroleum refining generally contain a certain amount of hydrogen sulfide gas. It will not only cause corrosion of production equipment and poisoning of downstream catalysts but also pollute the environment and damage human health. Currently used in industry for H 2 The treatment of S is mainly the Claus sulfur recovery process. This method can not only remove hydrogen sulfide in the tail gas, but also realize the recovery and utilization of sulfur. The basic principle of this process is as follows: [0003] h 2 S+(3 / 2)O 2 → SO 2 +H 2 O (1) [0004] SO 2 +2H 2 O→(3 / n)Sn+2H 2 O (2). [0005] However, due to thermodynamic equilibrium l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24B01J35/10C01B17/04
CPCC01B17/0465B01J27/24B01J35/613B01J35/615
Inventor 王心晨江莉龙沈丽娟曹彦宁雷淦昌
Owner FUZHOU UNIV ASSET MANAGEMENT CO LTD
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