Mn base metal organic skeletal catalyst, and preparation method and application thereof in air pollution prevention

An organic framework and catalyst technology, applied in the field of metal-organic framework catalytic materials, can solve problems such as difficult to achieve complete conversion, difficult to industrial application, and high reaction temperature

Active Publication Date: 2017-01-25
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above methods not only have high reaction temperature but also are difficult to achieve complete conversion. In addition, these methods are difficult to realize industrial application

Method used

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  • Mn base metal organic skeletal catalyst, and preparation method and application thereof in air pollution prevention
  • Mn base metal organic skeletal catalyst, and preparation method and application thereof in air pollution prevention
  • Mn base metal organic skeletal catalyst, and preparation method and application thereof in air pollution prevention

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A preparation method of Mn-based metal organic framework catalyst includes the following steps:

[0025] Step 1. Take 5ml of methanol solution with a graduated cylinder and place it in a 50ml beaker, and weigh 2.5g of manganese nitrate tetrahydrate (Mn(NO 3 ) 2 ·4H 2 O) Dissolve in the above beaker containing 5 ml methanol solution, stir until completely dissolved, and obtain a methanol solution of manganese nitrate.

[0026] Step 2: Dissolve the methanol solution of manganese nitrate in the methanol solution of homotricarboxylic acid, and heat the reaction for 0.5 h while stirring to obtain the reacted solution;

[0027] Step 3: Put the reacted solution in a reaction kettle lined with polytetrafluoroethylene, seal it, put it in an oven at a temperature of 120°C and heat it for 2 hours to obtain coarse crystals, filter and wash the coarse crystals, Dry for 8 hours in an oven at a temperature of 80° C. to obtain crystals.

[0028] Step four, put the crystal obtained in step thre...

Embodiment 2

[0041] A preparation method of Mn-based metal-organic framework catalyst. The preparation method is the same as in Example 1. The calcination temperature in step 4 is changed to 100°C (atmosphere volume ratio is 1% CO, 20% O 2 , 79% He). The evaluation method of the Mn-based metal-organic framework catalyst prepared in this example is the same as that of Example 1. The activity test shows that the Mn-based metal-organic framework catalyst prepared in this embodiment has a CO conversion rate of 100% at 360°C.

Embodiment 3

[0043] A preparation method of Mn-based metal-organic framework catalyst. The preparation method is the same as in Example 1. The calcination temperature in step 4 is changed to 200°C (atmosphere volume ratio is 1% CO, 20% O 2 , 79% He). The evaluation method of the Mn-based metal-organic framework catalyst prepared in this example is the same as that of Example 1. The activity test shows that the Mn-based metal-organic framework catalyst prepared in this example has a CO conversion rate of 100% at 330°C.

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Abstract

The invention provides a Mn base metal organic skeletal catalyst, and a preparation method and application thereof in air pollution prevention. The preparation method comprises the following steps of (1) dissolving manganese metal salt into an organic solvent, and obtaining an organic solution of the manganese metal salt; (2) mixing the organic solution of the manganese metal salt and an organic solution of an organic ligand, stirring and heating, and obtaining a reacted solution; (3) putting the reacted solution into a reaction kettle, putting into a drying oven, heating, obtaining a coarse crystal, filtering, washing and drying the coarse crystal, and obtaining a crystal; (4) roasting the crystal, and obtaining the Mn base metal organic skeletal catalyst. The preparation method is simple, easy to operate, and suitable for industrialized application; the Mn base metal organic skeletal catalyst prepared by adopting the preparation method is high in heat stability and large in specific surface area, and can be used for catalyzing CO and eliminating volatile organic pollutants in air and oxynitride containing sulfur dioxide atmosphere.

Description

Technical field [0001] The invention belongs to the field of metal-organic framework catalytic materials, and specifically relates to a Mn-based metal-organic framework catalyst, a preparation method thereof, and application in preventing and controlling air pollution. Background technique [0002] With the development of modern industry, environmental pollution has become more and more serious, and the prevention and control of environmental pollution has become a major issue related to the national economy and people's livelihood. In particular, automobile exhaust pollution has become one of the main sources of air pollution, and CO is one of the main pollutants in automobile exhaust. Since various volatile organic compounds emitted from building materials, interior decoration materials, and living and office supplies are also harmful to human health at all times, the development of efficient and stable CO and VOCs catalysts is of great significance. [0003] The Mn-MOF material...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/22B01J35/10B01D53/86B01D53/60B01D53/62
CPCB01D53/8637B01D53/864B01D2257/502B01J31/1691B01J31/2208B01J35/1019B01J35/1023B01J35/1028B01J35/1047Y02A50/20
Inventor 张晓东李红欣侯扶林杨阳杨一琼
Owner UNIV OF SHANGHAI FOR SCI & TECH
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