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Low-dimensional nano-structured iron vanadate denitration catalyst, and preparation method and application thereof

A denitration catalyst and low-dimensional nanotechnology are applied in the field of low-dimensional nanostructured iron vanadate catalyst and its preparation, which can solve the problems of sharp reduction of forests, marine pollution, solid waste pollution, etc., achieve N2 selective sulfur resistance, improve Catalytic efficiency and stable product quality

Active Publication Date: 2013-09-25
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The top ten environmental problems facing the world at present are: 1. Climate warming; 2. Destruction of the ozone layer; 3. Reduction of biodiversity; 4. Spread of acid rain; , Water Pollution; 9. Marine Pollution; 10. Solid Waste Pollution
However, no special high-efficiency denitration catalyst based on the low-dimensional nanostructure of ferrovanadium has been reported. Therefore, it is necessary to study this

Method used

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  • Low-dimensional nano-structured iron vanadate denitration catalyst, and preparation method and application thereof
  • Low-dimensional nano-structured iron vanadate denitration catalyst, and preparation method and application thereof
  • Low-dimensional nano-structured iron vanadate denitration catalyst, and preparation method and application thereof

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Experimental program
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Embodiment 1

[0039] see Figure 1 to Figure 5 , the present invention provides a low-dimensional nano-structure iron vanadate denitration catalyst, which is one of the iron vanadate structures of nanorods, nanowires or nanosheets.

[0040] The iron vanadate with a nanorod structure has a diameter of 50-300 nm and a length of 1-5 μm; the iron vanadate with a nanowire structure has a diameter of 50-300 nm and a length of 10-500 μm; the vanadate with a nanosheet structure Iron, 0.5-5μm long, 0.5-5μm wide, 50-100nm thick.

[0041] The low-dimensional nano-structure iron vanadate denitration catalyst is made of the following components: metavanadate, nitric acid, iron salt, ammonia, and surfactant, and its molar ratio is: metavanadate 1.0: Nitric acid 10.0: iron salt 0.5-1.0: ammonia water 0.1-4.0: surfactant 0.0-4.0.

[0042] Wherein the metavanadate is one of ammonium metavanadate, sodium metavanadate or potassium metavanadate; the iron salt is one of ferric nitrate, ferric chloride or ferr...

Embodiment 2

[0055] see figure 1 , the low-dimensional nanostructure ferric vanadate denitration catalyst provided in this example and its preparation method and application, its structure, components and steps are the same as in Example 1, the difference is:

[0056] The low-dimensional nanostructure iron vanadate denitration catalyst is specifically a nanorod structure, which is made of metavanadate, nitric acid, iron salt, and ammonia water. The molar ratio of metavanadate, nitric acid, iron salt, and ammonia water is It is 1.0:10.0:0.8:3.

[0057] The metavanadate is ammonium metavanadate.

[0058] The iron salt is iron nitrate.

[0059] The preparation method of the above-mentioned low-dimensional nanorod structure iron vanadate denitration catalyst comprises the following steps:

[0060] (1) prepare each raw material component according to following mol ratio: the mol ratio of metavanadate, nitric acid, iron salt, ammoniacal liquor is 1.0: 10.0: 0.8: 3;

[0061] (2) Configure iro...

Embodiment 3

[0066] The low-dimensional nanostructure ferric vanadate denitration catalyst provided in this example and its preparation method and application, its structure, components and steps are the same as those of Examples 1 and 2, the difference is:

[0067] This embodiment provides a low-dimensional nanorod structure iron vanadate denitration catalyst, which is made of metavanadate, nitric acid, iron salt, and ammonia water, and the molar ratio of metavanadate, nitric acid, iron salt, and ammonia water is 1.0:10.0:1:0.1.

[0068] The metavanadate is sodium metavanadate.

[0069] The iron salt is ferric chloride.

[0070] The method for preparing the above-mentioned low-dimensional nanorod structure iron vanadate denitration catalyst comprises the following steps:

[0071] (1) The mol ratio of metavanadate, nitric acid, iron salt, ammoniacal liquor is 1.0: 10.0: 1: 0.1, prepare each component according to above-mentioned mol ratio:

[0072] (2) Configure iron salt solution: diss...

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Abstract

The invention discloses a low-dimensional nano-structured iron vanadate denitration catalyst which is characterized in that the iron vanadate has a nano-rod or nano-wire or nano-sheet structure. The catalyst is prepared by using meta-vanadate, nitric acid, iron salt and ammonia water with a molar ratio of 1.0:10.0:0.5-1.0:0.1-4.0:0.0-4.0. The invention also discloses a preparation method and an application of the low-dimensional nano-structured iron vanadate denitration catalyst. According to the invention, advantages of a vanadium-based catalyst, an iron-based catalyst, and the low-dimensional nano structure are combined. Excellent activity, selectivity, thermal stability, and SO2 intoxication resistance are provided. The catalyst can be used in removing of nitrogen oxides in various flue gases.

Description

technical field [0001] The invention relates to the field of environmental protection technology, in particular to a low-dimensional nanostructure iron vanadate catalyst and its preparation method and application. The catalyst is used for NH in flue gas 3 -SCR denitrification. Background technique [0002] Environmental protection refers to the general term for various actions taken by human beings to solve actual or potential environmental problems, coordinate the relationship between human beings and the environment, and ensure the sustainable development of economic society. Among them, the methods and means of engineering technology are particularly important. [0003] With the continuous development of human society, the air and other environmental pollution problems caused by industrial production and other reasons are becoming more and more serious. The top ten environmental problems facing the world at present are: 1. Climate warming; 2. Destruction of the ozone la...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/847B01D53/86B01D53/56
Inventor 施利毅张登松黄垒李红蕊张剑平曹卫国
Owner SHANGHAI UNIV
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