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Low-temperature denitration catalyst based on metal organic framework structure and preparation method thereof

A metal-organic framework, denitration catalyst technology, applied in organic compound/hydride/coordination complex catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problem of reducing reactive sites, reducing specific surface area, The problem of high production cost, to achieve the effect of good application prospect, large specific surface area and high porosity

Inactive Publication Date: 2020-04-07
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Noble metal catalysts have excellent low-temperature activity, but high production costs
The study found that manganese-based catalysts have better low-temperature catalytic activity, but have a lower activity window and are prone to sintering, resulting in a significant decrease in specific surface area, thereby reducing the number of reactive sites.

Method used

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  • Low-temperature denitration catalyst based on metal organic framework structure and preparation method thereof
  • Low-temperature denitration catalyst based on metal organic framework structure and preparation method thereof
  • Low-temperature denitration catalyst based on metal organic framework structure and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] In this example, a metal-organic framework-based low-temperature denitrification catalyst uses a metal-organic framework MOF-74 as a carrier, and uses metal manganese and metal iron as active components attached to the carrier to form a metal-organic framework- The composite material with MnFe structure is used as a denitrification catalyst for low temperature denitrification at 115-300°C.

[0030] A method for preparing a low-temperature denitration catalyst based on a metal-organic framework structure in this embodiment, comprising the following steps:

[0031] a. According to the solvent mixing ratio, measure 3.5mL of ethanol, 3.5mL of pure water and 53mL of N,N-dimethylformamide (DMF) in a 100mL reaction flask with a graduated cylinder, stir and mix evenly to obtain Mixed solvent;

[0032] b. According to the mixing ratio of the reactants, weigh 0.133g of 2,5-dihydroxyterephthalic acid (DHTP), 0.300g of MnCl 2 4H 2 O, 0.153g of iron nitrate nonahydrate (Fe(NO 3 ...

Embodiment 2

[0039] This embodiment is basically the same as Embodiment 1, especially in that:

[0040] In this example, a metal-organic framework-based low-temperature denitrification catalyst uses a metal-organic framework MOF-74 as a carrier, and uses metal manganese and metal iron as active components attached to the carrier to form a metal-organic framework- The composite material with MnFe structure is used as a denitrification catalyst for low temperature denitrification at 115-300°C.

[0041] A method for preparing a low-temperature denitration catalyst based on a metal-organic framework structure in this embodiment, comprising the following steps:

[0042]a. According to the solvent mixing ratio, measure 3.5mL of ethanol, 3.5mL of pure water and 53mL of N,N-dimethylformamide (DMF) in a 100mL reaction flask with a graduated cylinder, stir and mix evenly to obtain Mixed solvent;

[0043] b. According to the mixing ratio of the reactants, weigh 0.133g of 2,5-dihydroxyterephthalic a...

Embodiment 3

[0050] This embodiment is basically the same as the previous embodiment, and the special features are:

[0051] In this example, a metal-organic framework-based low-temperature denitrification catalyst uses a metal-organic framework MOF-74 as a carrier, and uses metal manganese and metal iron as active components attached to the carrier to form a metal-organic framework- The composite material with MnFe structure is used as a denitrification catalyst for low temperature denitrification at 115-300°C.

[0052] A method for preparing a low-temperature denitration catalyst based on a metal-organic framework structure in this embodiment, comprising the following steps:

[0053] a. According to the solvent mixing ratio, measure 3.5mL of ethanol, 3.5mL of pure water and 53mL of N,N-dimethylformamide (DMF) in a 100mL reaction flask with a graduated cylinder, stir and mix evenly to obtain Mixed solvent;

[0054] b. According to the mixing ratio of the reactants, weigh 0.133g of 2,5-d...

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Abstract

The invention discloses a low-temperature denitration catalyst based on a metal organic framework structure and a preparation method of the low-temperature denitration catalyst. The catalyst comprisesa carrier and an active component attached to the carrier, the carrier structure is a metal organic framework structure MOF-74, the active components are manganese and metal X, and X is one or more of copper, iron, cobalt, nickel, zinc and magnesium. The low-temperature denitration catalyst based on a metal organic framework structure has the advantages of large specific surface area, high porosity, a stable frame structure, complete exposure of metal active points and the like; the MOF-based low-temperature efficient denitration catalyst has the advantages that the catalytic efficiency at 150 DEG C is close to 100%, the active temperature window is wide, the application prospect is promising, the reaction activity in the low-temperature range is excellent, the toxicity is avoided, the safety is realized, and the production cost is low.

Description

technical field [0001] The invention relates to a denitration catalyst and a preparation method thereof, in particular to a low-temperature denitration catalyst and a preparation method thereof, which are applied in the technical field of catalysts. Background technique [0002] Nitrogen oxides have become the largest acid gas pollutant in my country, and nitrogen oxide pollution can cause human respiratory diseases, photochemical smog, acid rain and smog. The nitrogen oxides in the atmosphere mainly come from motor vehicles, thermal power plants, industrial combustion devices, etc. How to effectively reduce the emission of nitrogen oxides has become an important research direction in the field of environmental protection. [0003] The most effective control method at present is to use ammonia and oxygen to carry out selective catalytic reduction (SCR) of nitrogen oxide gas to generate green nitrogen and water. The denitrification device in this method is generally installe...

Claims

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Application Information

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IPC IPC(8): B01J31/22B01J35/10B01D53/86B01D53/56
CPCB01J31/2239B01D53/8628B01J2531/72B01J2531/842B01J35/61
Inventor 陈莹莹刘艺昊张佳冯凌燕
Owner SHANGHAI UNIV
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