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Carbon-doped graphite-phase carbon nitride loaded iron-manganese denitration catalyst as well as preparation method and application thereof

A graphite-phase carbon nitride and denitrification catalyst technology, applied in the field of denitrification catalyst materials, can solve the problems of ammonia leakage, poor environmental friendliness, secondary pollution, etc., and achieve the effects of easy adsorption, improved charge transfer ability, and improved denitrification efficiency

Pending Publication Date: 2022-03-18
ANHUI YUANCHEN ENVIRONMENTAL PROTECTION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The patent publication number is CN113117722, and the name is a kind of NH 3 -A method for preparing an atomic-level active site catalyst for SCR denitrification, which is represented by g-C 3 N 4 Support nickel lanthanum metal elements for NH 3 -In the SCR reaction, but the process uses ammonia as a reducing agent, which may easily lead to ammonia leakage during use, causing secondary pollution and poor environmental friendliness

Method used

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  • Carbon-doped graphite-phase carbon nitride loaded iron-manganese denitration catalyst as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1: Carbon-doped graphite phase carbon nitride-supported iron-manganese catalyst (CCN-FM)

[0025] (1) 0.075g of tannic acid is added to 15mL of deionized water to form a tannic acid solution;

[0026] (2) Put 20g of urea in a covered crucible, then add tannic acid solution and stir evenly, then heat to 400°C for 2h under air atmosphere, then heat to 500°C for 2h, you can get carbon-doped Graphite phase carbon nitride;

[0027] (3) 12g manganese acetate tetrahydrate is dissolved in 50mL deionized water, after its dissolution is completed, 10g ferric nitrate nonahydrate is added, and the graphite phase carbon nitride of 6g carbon doping is added in the mixed solution of manganese acetate and ferric nitrate, carry out Stir magnetically for 2 hours, dry at 105°C after stirring, and finally calcinate in a muffle furnace at 500°C for 2 hours (heating rate 5°C / min) to obtain a carbon-doped graphite phase carbon nitride-supported iron-manganese denitrification catalyst...

Embodiment 2

[0028] Example 2: Carbon-doped graphite phase carbon nitride-supported iron-manganese catalyst (CCN-FM)

[0029] (1) 0.15 g of tannic acid is added to 15 mL of deionized water to form a tannic acid solution;

[0030] (2) Put 20g of urea in a covered crucible, then add tannic acid solution and stir evenly, then heat to 400°C for 2h under air atmosphere, then heat to 500°C for 2h, you can get carbon-doped Graphite phase carbon nitride;

[0031] (3) 12g manganese acetate tetrahydrate is dissolved in 50mL deionized water, after its dissolution is completed, 10g ferric nitrate nonahydrate is added, and the graphite phase carbon nitride of 6g carbon doping is added in the mixed solution of manganese acetate and ferric nitrate, carry out Stir magnetically for 2 hours, dry at 105°C after stirring, and finally calcinate in a muffle furnace at 500°C for 2 hours (heating rate 5°C / min) to obtain a carbon-doped graphite phase carbon nitride-supported iron-manganese denitrification catalys...

Embodiment 3

[0032] Example 3: Carbon-doped graphite phase carbon nitride-supported iron-manganese catalyst (CCN-FM)

[0033] (1) 0.3 g of tannic acid is added to 15 mL of deionized water to form a tannic acid solution;

[0034] (2) Put 20g of urea in a covered crucible, then add tannic acid solution and stir evenly, then heat to 400°C for 2h under air atmosphere, then heat to 500°C for 2h, you can get carbon-doped Graphite phase carbon nitride;

[0035] (3) 12g manganese acetate tetrahydrate is dissolved in 50mL deionized water, after its dissolution is completed, 10g ferric nitrate nonahydrate is added, and the graphite phase carbon nitride of 6g carbon doping is added in the mixed solution of manganese acetate and ferric nitrate, carry out Stir magnetically for 2 hours, dry at 105°C after stirring, and finally calcinate in a muffle furnace at 500°C for 2 hours (heating rate 5°C / min) to obtain a carbon-doped graphite phase carbon nitride-supported iron-manganese denitrification catalyst...

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Abstract

The invention relates to the technical field of denitration catalyst materials, in particular to a carbon-doped graphite-phase carbon nitride loaded iron-manganese denitration catalyst and a preparation method and application thereof, and provides the following scheme: the preparation method comprises the following steps: dissolving ferric nitrate and manganese acetate in water to obtain a first mixed solution; and adding carbon-doped graphite phase carbon nitride into the first mixed solution, stirring, drying to obtain a first product, and calcining the first product at 350-600 DEG C for 2-6 hours to obtain the denitration catalyst, a preparation method of the carbon-doped graphite phase carbon nitride comprises the following steps: dissolving tannic acid in water to obtain a tannic acid solution with the concentration of 5-20 mg / mL, adding the tannic acid solution with the concentration of 5-20 mg / mL into the first mixed solution, stirring, drying to obtain a second product, and calcining the second product at 350-600 DEG C for 2-6 hours to obtain the denitration catalyst. And stirring and mixing the tannic acid solution and urea to obtain a second mixed solution, and calcining the second mixed solution in the air atmosphere at 400-600 DEG C for 2-6 hours to obtain the carbon-doped graphite phase carbon nitride. According to the catalyst prepared by the preparation method provided by the invention, the denitration efficiency of the catalyst is improved by taking the carbon-doped graphite phase carbon nitride as a carrier.

Description

technical field [0001] The invention relates to the field of denitration catalyst materials, in particular to a carbon-doped graphite phase carbon nitride-supported iron-manganese denitration catalyst, a preparation method and application thereof. Background technique [0002] A catalyst is a substance that can speed up the reaction without being consumed by itself. It is mainly composed of two parts, the active component and the carrier. Among them, the active component plays a major role in the catalytic process and is the key factor determining the catalytic performance of the catalyst. , the carrier plays the role of supporting the active ingredient and providing a reaction site for the reactant; [0003] Graphite carbon nitride (g-C 3 N 4 ) is a new type of organic polymer semiconductor, which is rich in nitrogen atoms and has good electron transport ability. The patent publication number is CN113117722, and the name is a kind of NH 3 -A method for preparing an atom...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24B01D53/86B01D53/56
CPCB01J27/24B01D53/8628B01D2251/204B01D2258/0283
Inventor 薛晚林许晓龙王光应
Owner ANHUI YUANCHEN ENVIRONMENTAL PROTECTION SCI & TECH
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