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Sulfur-resistant monodisperse fusiform monatomic catalyst for denitration and preparation method of sulfur-resistant monodisperse fusiform monatomic catalyst

A monodisperse, catalyst technology, used in separation methods, chemical instruments and methods, physical/chemical process catalysts, etc., to achieve the effect of increasing the active site of the reaction, fast reaction, efficient denitration and anti-sulfur

Pending Publication Date: 2021-12-07
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Today, single-atom catalysts have become a research hotspot in various fields due to their unique advantages, and have been widely used in a series of redox reaction systems, such as CO oxidation, CO 2 Reduction, oxygen reduction reaction (ORR), selective hydrogenation, photocatalyst, etc., but there is no suitable technology to successfully apply single-atom catalysts to the field of denitrification and anti-sulfur

Method used

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  • Sulfur-resistant monodisperse fusiform monatomic catalyst for denitration and preparation method of sulfur-resistant monodisperse fusiform monatomic catalyst
  • Sulfur-resistant monodisperse fusiform monatomic catalyst for denitration and preparation method of sulfur-resistant monodisperse fusiform monatomic catalyst
  • Sulfur-resistant monodisperse fusiform monatomic catalyst for denitration and preparation method of sulfur-resistant monodisperse fusiform monatomic catalyst

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Experimental program
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Effect test

Embodiment 1

[0026] Accurately weigh 0.1 g of a monodisperse spindle-shaped iron oxide sample, dissolve it in 50 mL of deionized water, prepare an iron oxide solution, disperse it ultrasonically for 20 min, and mark it as solution A. Accurately weigh 0.15 g of dopamine hydrochloride, dissolve it in 50 mL of deionized water, then add 0.2 mg of vanadyl ethylene acetonate, ultrasonically disperse for 30 min, and mark it as solution B. Then add solution B to solution A, stir at room temperature for 30 minutes, add 40 mL of tris-hydrochloric acid solution (0.24 g of tris, 6 mL of hydrochloric acid, and 34 mL of deionized water), and continue stirring at room temperature for 12 hours After the reaction, the reaction solution was repeatedly suction filtered and dried for later use. The dried sample was calcined in a nitrogen-protected muffle furnace at 900°C for 2 hours to remove organic impurities. After cooling, the calcined sample was placed in 5% dilute hydrochloric acid solution to repeatedl...

Embodiment 2

[0029] Accurately weigh 0.1 g of a monodisperse spindle-shaped iron oxide sample, dissolve it in 50 mL of deionized water, prepare an iron oxide solution, disperse it ultrasonically for 20 min, and mark it as solution A. Accurately weigh 0.15 g of dopamine hydrochloride, dissolve it in 50 mL of deionized water, then add 0.4 mg of vanadyl ethylene acetonate, ultrasonically disperse for 30 min, and mark it as solution B. Then add solution B to solution A, stir at room temperature for 30 minutes, add 40 mL of tris-hydrochloric acid solution (0.24 g of tris, 6 mL of hydrochloric acid, and 34 mL of deionized water), and continue stirring at room temperature for 12 hours After the reaction, the reaction solution was repeatedly suction filtered and dried for later use. The dried sample was calcined in a nitrogen-protected muffle furnace at 900°C for 2 hours to remove organic impurities. After cooling, the calcined sample was placed in 5% dilute hydrochloric acid solution to repeatedl...

Embodiment 3

[0032] Accurately weigh 0.1 g of a monodisperse spindle-shaped iron oxide sample, dissolve it in 50 mL of deionized water, prepare an iron oxide solution, disperse it ultrasonically for 20 min, and mark it as solution A. Accurately weigh 0.15 g of dopamine hydrochloride, dissolve it in 50 mL of deionized water, then add 0.6 mg of vanadyl ethylene acetonate, ultrasonically disperse for 30 min, and mark it as solution B. Then add solution B to solution A, stir at room temperature for 30 minutes, add 40 mL of tris-hydrochloric acid solution (0.24 g of tris, 6 mL of hydrochloric acid, and 34 mL of deionized water), and continue stirring at room temperature for 12 hours After the reaction, the reaction solution was repeatedly suction filtered and dried for later use. The dried sample was calcined in a nitrogen-protected muffle furnace at 900°C for 2 hours to remove organic impurities. After cooling, the calcined sample was placed in 5% dilute hydrochloric acid solution to repeatedl...

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Abstract

The invention discloses a sulfur-resistant monodisperse fusiform monatomic catalyst for denitration and a preparation method of the sulfur-resistant monodisperse fusiform monatomic catalyst. The preparation method comprises the following steps: firstly, weighing monodisperse fusiform iron oxide as a monatomic catalyst carrier; anchoring monatomic vanadyl on dopamine hydrochloride and adjusting a pH value by using a trihydroxymethyl aminomethane-hydrochloric acid solution to allow dopamine hydrochloride to undergo a polymerization reaction so as to tightly wrap an iron oxide carrier; carrying out high-temperature calcination to enable polydopamine to form carbon; and carrying out acid pickling to remove iron oxide so as to finally form the monodisperse fusiform monatomic vanadyl catalyst. Compared with other denitration sulfur-resistant catalysts, the monatomic oxygen vanadium disclosed by the invention has the advantages that the preparation cost of the catalyst is greatly reduced, and the catalytic capability of active substances can be exerted to the greatest extent; namely, the effect of an original commercial catalyst can be achieved by the catalyst accounting for only one thousandth of the dosage of the original commercial catalyst.

Description

technical field [0001] The invention belongs to the technical field of functional special-shaped single-atom catalysts, in particular to a monodisperse spindle-shaped single-atom catalyst for denitrification and anti-sulfur and a preparation method thereof. Background technique [0002] Energy is the fundamental driving force of economic development, but it is also the source of pollution. Since mankind entered the industrialized society, social productivity has developed rapidly, and the amount of energy development and use has also gradually increased. Especially in recent decades, the process of industrialization has continued to accelerate, and the amount of energy consumption and pollutant emissions has increased sharply, which has seriously affected the world. Human life, property, health and social progress. Global environmental issues have become increasingly prominent and have become the focus of public attention. Environmental pollution includes air pollution, wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/847C01G49/06B01D53/86B01D53/56
CPCB01J23/8472C01G49/06B01D53/8628B01D2251/2062
Inventor 郑玉婴郑伟杰
Owner FUZHOU UNIV
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