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Method for preparing denitration anti-sulfur catalyst grown in situ on nitrogen-doped grid macromolecule

A technology of in-situ growth and macromolecules, applied in separation methods, chemical instruments and methods, physical/chemical process catalysts, etc., to achieve high denitrification and anti-sulfur performance

Active Publication Date: 2020-04-10
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Carrier-free MnO x -CeO 2 The catalyst has the highest low-temperature SCR activity in such reports so far, NO at 120°C x can be converted almost completely to N 2 , but there is no suitable technique for its successful in situ growth on gridded macromolecules (g-C for short 3 N 4 )superior

Method used

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  • Method for preparing denitration anti-sulfur catalyst grown in situ on nitrogen-doped grid macromolecule
  • Method for preparing denitration anti-sulfur catalyst grown in situ on nitrogen-doped grid macromolecule
  • Method for preparing denitration anti-sulfur catalyst grown in situ on nitrogen-doped grid macromolecule

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Accurately weigh 0.1 g of cyanuric acid (abbreviated as CA) sample, dissolve it in 50 mL of N, N-dimethylformamide solvent, place it in an ultrasonic machine for 30 min, and prepare a CA solution. Accurately weigh 0.024g of cerium acetate (abbreviated as Ce(Ac) 3 ) into the prepared above solution, put into a stirring bar, and stir at room temperature for 1 hour until Ce(Ac) 3 completely dissolved. Accurately weigh 0.027g of tin tetrachloride (SnCl 4 ), added to the above solution, and continued to stir at room temperature for 1 hour until SnCl 4 completely dissolved. After complete dissolution, accurately weigh 0.075g of 2,4,6-triaminopyrimidine (TAP for short) and add to the above solution. Continue to accurately weigh 0.025g of cytosine (referred to as C) and add it to the above solution for 1h at room temperature, then accurately weigh 0.012g of KMnO 4 , dissolved in 30 mL of N,N-dimethylformamide solvent, ultrasonicated for 10 min, added to the reaction soluti...

Embodiment 2

[0034] Accurately weigh 0.1 g of cyanuric acid (abbreviated as CA) sample, dissolve it in 50 mL of N, N-dimethylformamide solvent, place it in an ultrasonic machine for 30 min, and prepare a CA solution. Accurately weigh 0.048g of cerium acetate (abbreviated as Ce(Ac) 3 ) into the prepared above solution, put into a stirring bar, and stir at room temperature for 1 hour until Ce(Ac) 3 completely dissolved. Accurately weigh 0.054g of tin tetrachloride (SnCl 4 ), added to the above solution, and continued to stir at room temperature for 1 hour until SnCl 4 completely dissolved. . After complete dissolution, accurately weigh 0.075g of 2,4,6-triaminopyrimidine (TAP for short) and add to the above solution. Continue to accurately weigh 0.025g of cytosine (referred to as C) and add it to the above solution for 1h at room temperature, then accurately weigh 0.024g of KMnO 4 , dissolved in 30 mL of N,N-dimethylformamide solvent, ultrasonicated for 10 min, added to the reaction sol...

Embodiment 3

[0037] Accurately weigh 0.1 g of cyanuric acid (abbreviated as CA) sample, dissolve it in 50 mL of N, N-dimethylformamide solvent, place it in an ultrasonic machine for 30 min, and prepare a CA solution. Accurately weigh 0.072g of cerium acetate (abbreviated as Ce(Ac) 3 ) into the prepared above solution, put into a stirring bar, and stir at room temperature for 1 hour until Ce(Ac) 3 completely dissolved. Accurately weigh 0.081g of tin tetrachloride (SnCl 4 ), added to the above solution, and continued to stir at room temperature for 1 hour until SnCl 4 completely dissolved. . After complete dissolution, accurately weigh 0.075g of 2,4,6-triaminopyrimidine (TAP for short) and add to the above solution. Continue to accurately weigh 0.025g of cytosine (referred to as C) and add it to the above solution for 1h at room temperature, then accurately weigh 0.036g of KMnO 4 , dissolved in 30 mL of N,N-dimethylformamide solvent, ultrasonicated for 10 min, added to the reaction sol...

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Abstract

The invention belongs to the technical field of functional organic macromolecular composite catalysts, and relates to a method for preparing a nitrogen-doped grid macromolecule composite material loading an efficient denitration anti-sulfur catalyst. Firstly, a high number of Ce<3+>, Ce<4+>, Sn<3+> and Sn<4+> ions are accumulated around melamine molecules through a manner of adding metal salts; then 2,4,6-triaminopyrimidine and cytosine are added and subjected to a grafting reaction with cyanuric acid to generate a first-stage N-doped macromolecule; then potassium permanganate is adopted as anoxidant to participate a redox reaction on the surface of the N-doped macromolecule so that a manganese-cerium-tin catalyst grows in situ on the surface of N-doped macromolecule; and finally one-timeroasting is performed so that the N-doped macromolecule is crosslinked to generate the composite material in which the denitration anti-sulfur catalyst is grown in situ on the nitrogen-doped grid macromolecule. The composite material has higher denitration anti-sulfur performance.

Description

technical field [0001] The invention belongs to the technical field of functional organic macromolecular composite catalysts, and in particular relates to the preparation of a novel N-doped organic macromolecule and the in-situ growth of ternary Mn-Ce-SnO on its surface x Catalyst High-efficiency denitrification and anti-sulfur catalyst technology. Background technique [0002] With the rapid development of China's industrialization process, many inevitable pollutions have been produced, among which air pollution is the most serious and the most concerned issue among many pollutions. The generation of air pollution has caused people's life, health, work and social Nature has suffered relatively severe damage. At present, air pollution sources can be divided into fixed pollution sources and mobile pollution sources. The pollutants of the pollution sources are mainly produced by coal combustion, including PM2.5, PM10, sulfur dioxide, nitrogen oxides and nitrogen dioxide, etc....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24B01J23/34B01J35/10B01D53/86B01D53/56
CPCB01J27/24B01J35/10B01J23/34B01D53/8628B01D2255/2065B01D2255/2094B01D2255/2073B01D2255/705B01D2255/40B01D2251/2062B01J37/086B01J23/002B01J37/343B01J2523/00B01J2523/3712B01J2523/43B01J2523/72B01D2257/40B01D2258/06B01J6/001B01J35/008B01J37/0236B01J37/08
Inventor 郑玉婴郑伟杰
Owner FUZHOU UNIV
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