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Supported metal composite oxide SCR catalyst and preparation method thereof

A SCR catalyst, metal composite technology, applied in metal/metal oxide/metal hydroxide catalyst, catalyst activation/preparation, physical/chemical process catalyst, etc., to achieve high activity, widening temperature window, and good application prospects.

Pending Publication Date: 2020-12-08
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, there is no literature or patent report on the application of this type of iron-copper-titanium catalyst in SCR reaction

Method used

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  • Supported metal composite oxide SCR catalyst and preparation method thereof
  • Supported metal composite oxide SCR catalyst and preparation method thereof
  • Supported metal composite oxide SCR catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1 (comparative example):

[0032] Accurately weigh 1.30 g of titanyl sulfate powder and dissolve it in a certain amount of deionized water. Weigh 2.65g Fe(NO 3 ) 3 9H 2 O, add to the above solution, add 20g TiO after dissolving 2 powder, mix well. The above mixed solution was sonicated for 0.5h, then heated in a microwave field, and the input power was controlled to 600-950W, and then the sample was transferred to a muffle furnace for 3h at 500°C to obtain 1# catalyst.

Embodiment 2

[0033] Embodiment 2 (comparative example):

[0034] Accurately weigh 1.23g of titanyl sulfate powder, dissolve in a certain amount of deionized water, weigh 1.52g of Cu(NO 3 ) 2 ·3H 2 O, add to the above solution, add 20g TiO after dissolving 2 powder, mix well. The above mixed solution was sonicated for 0.5h, then heated in a microwave field, and the input power was controlled to 600-950W, and then the sample was transferred to a muffle furnace for 3h at 500°C to obtain 2# catalyst.

Embodiment 3

[0036] Accurately weigh 0.81g titanyl sulfate powder, dissolve in a certain amount of deionized water, weigh 0.84g Fe(NO 3 ) 3 9H 2 O and 1.01gCu(NO 3 ) 2 ·3H 2 O was added to the above solution, stirred until it was completely dissolved, and 20g TiO was added after dissolution 2 powder, mix well. The above mixed solution was sonicated for 0.5h, then heated in a microwave field, and the input power was controlled to 600-950W, and then the sample was transferred to a muffle furnace for 3h roasting at 500°C to obtain 3# catalyst.

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Abstract

The invention discloses a supported metal composite oxide SCR catalyst and a preparation method thereof, and belongs to the technical field of SCR catalyst preparation. The preparation method comprises the following steps: (1) firstly, weighing raw materials, dissolving the raw materials in deionized water, and mixing the raw materials in a molar ratio of Fe: Cu: Ti of (0.1-0.3): (0.1-0.2): 0.1 bymeans of stirring, grinding, ball milling and the like; (2) heating the mixture in a microwave field at the heating temperature of 60-100 DEG C and the power of 600-950 W; and (3) transferring the mixture into a muffle furnace for roasting at the temperature of 400-800 DEG C for 3-6 hours. The raw materials are simple and easy to obtain, preparation conditions are easy to control, no toxicity orharm is caused, and the obtained catalyst has good catalytic activity.

Description

technical field [0001] The invention belongs to the technical field of preparation of SCR catalysts, and in particular relates to an iron-copper-titanium composite metal oxide denitration catalyst and a preparation method thereof. Background technique [0002] Nitrogen oxides (NO X ) is one of the main pollutants in air pollution at present. It mainly comes from fixed and mobile sources such as power plants, factories, automobile exhaust and combustion of fossil fuels. It is the cause of greenhouse effect, acid rain, photochemical smog and PM2.5 The main cause of pollution has a significant impact on the global environment and human health. And for nitrogen oxides (NO X ) removal to ammonia (NH 3 ) is the SCR process of reducing agent (ie NH 3 -SCR) has attracted much attention and has been widely used commercially in the removal of stationary and mobile sources of nitrogen oxides. [0003] Catalysts are highly efficient and selective NOx in SCR technology X converted ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/745B01J37/03B01J37/34B01J37/10B01J37/08B01D53/86B01D53/56
CPCB01J23/745B01J37/031B01J37/346B01J37/10B01J23/002B01J37/088B01D53/8628B01J2523/00B01D2251/2062B01J35/394B01J2523/17B01J2523/47B01J2523/842
Inventor 宋丽云李双叶冀芊竹李坚张逸馨邓世林
Owner BEIJING UNIV OF TECH
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