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Preparation of Co-MOF-74 material with three-dimensional structure and VOCs application of Co-MOF-74 material

A co-mof-74, three-dimensional technology, used in catalyst activation/preparation, gas treatment, metal/metal oxide/metal hydroxide catalysts, etc., can solve problems such as air quality and adverse effects on human health, and achieve The product shape and size are controllable, the yield is high, and the phase is uniform.

Inactive Publication Date: 2022-03-04
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In recent years, with the rapid development of industry, VOCs have been emitted in large quantities. However, VOCs are the main components of air pollutants and are important precursors for the formation of smog and ozone pollution, which have adverse effects on air quality and human health.

Method used

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  • Preparation of Co-MOF-74 material with three-dimensional structure and VOCs application of Co-MOF-74 material
  • Preparation of Co-MOF-74 material with three-dimensional structure and VOCs application of Co-MOF-74 material
  • Preparation of Co-MOF-74 material with three-dimensional structure and VOCs application of Co-MOF-74 material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Weigh 0.198g of 2,5-dihydroxyterephthalylene and 1.164g of Co(NO 3 ) 2 ·6H 2 O was added to 100mL (DMF:EtOH:H 2 O=1:1:1), sonicated for 5 minutes to mix the solution evenly, placed in a 100 mL reactor, aged at 100°C for 24 hours, then centrifuged and filtered to obtain a solid, which was washed three times with ethanol and water, and then heated at 100°C Co-MOF-74 crystals with rod-like three-dimensional structure were obtained after drying.

[0030] The catalytic activity of the Co-MOF-74 sample with rod-shaped three-dimensional structure prepared in this embodiment was tested. Specifically: take 0.1 g of the sample prepared in this embodiment and place it in a quartz tube with an inner diameter of 6 mm and a length of 75 cm. Quartz wool is placed in the quartz tube as a carrier to prevent the catalyst from falling. Set the reaction temperature to the temperature program mode, and the space velocity is 120000mL g -1 h -1 , the mixed gas of oxygen and nitrogen and...

Embodiment 2

[0032] 0.246g 2-MI dissolved in 10ml DMF:EtOH:H 2 O=1:1:1 mixed evenly; 0.198g 2,5-dihydroxyterephthalic acid and 1.164g Co(NO 3 ) 2 ·6H 2 O was added to 100mL DMF:EtOH:H2 O=1:1:1, ultrasonication for 5 minutes is used to mix the solution evenly, and the 2-MI mixed solution is evenly added dropwise to the above mixed solution, stirred in a magnetic stirrer for 10 minutes, and then placed in a 100mL reactor for aging at 100°C for 24 hours, then After centrifugal filtration, the obtained solid was washed three times with ethanol and then with ultrapure water, and dried to obtain a flower-like three-dimensional Co-MOF-74 crystal.

[0033] The catalytic activity of the Co-MOF-74 sample with a flower-like three-dimensional structure prepared in this embodiment was tested. Specifically: take 0.1 g of the sample prepared in this embodiment and place it in a quartz tube with an inner diameter of 6 mm and a length of 75 cm. Quartz wool is placed in the quartz tube as a carrier to pr...

Embodiment 3

[0035] 0.492g 2-MI dissolved in 10ml DMF:EtOH:H 2 O=1:1:1 mixed evenly; 0.198g 2,5-dihydroxyterephthalic acid and 1.164g Co(NO 3 ) 2 ·6H 2 O was added to 100 mL DMF:EtOH:H 2 O=1:1:1, mix evenly, add the 2-MI mixed solution evenly to the above mixed solution dropwise, stir for 10mim, then put it in a 100mL reactor for aging at 100°C for 24h, and then centrifuge to obtain a solid that is first washed with ethanol and then Washed three times with ultrapure water, and dried to obtain spherical Co-MOF-74 crystals with three-dimensional structure.

[0036] The catalytic activity of the Co-MOF-74 sample with a spherical three-dimensional structure obtained in this embodiment was tested in a catalytic micro-reaction device. Specifically: take 0.1 g of the sample prepared in this embodiment and place it in a quartz tube with an inner diameter of 6 mm and a length of 75 cm, and place quartz wool in the quartz tube as a carrier to prevent the catalyst from falling. Set the reaction ...

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Abstract

The invention discloses Co-MOF-74 materials with different morphologies as well as a preparation method and application of the Co-MOF-74 materials. The preparation method of the material comprises the following steps: (1) preparing a Co-MOF-74 material with a rod-like three-dimensional structure; (2) preparing a Co-MOF-74 material with a flower-shaped three-dimensional structure; and (3) preparing the Co-MOF-74 material with a spherical three-dimensional structure. After different materials are prepared, the calcination temperature is analyzed through thermogravimetric analysis so as to maintain the original morphology, and finally, an ethyl acetate removal reaction is carried out by utilizing a micro-catalysis device. The Co-MOF-74 material with the same morphology and the three-dimensional structure is prepared through a hydrothermal method, the preparation process is simple, experiment conditions are easy to control, and the obtained material is high in catalytic reaction activity and stability. When the conversion rate of the three-dimensional structure materials with different morphologies to ethyl acetate reaches 100%, the corresponding temperatures are 200 DEG C, 210 DEG C and 220 DEG C.

Description

technical field [0001] The invention relates to the preparation of a catalyst for degrading volatile organic compounds, in particular to a preparation method of a three-dimensional structure Co-MOF-74 material and its application to VOCs. Background technique [0002] In recent years, with the rapid development of industry, VOCs have been emitted in large quantities. However, VOCs are the main components of air pollutants and are important precursors for the formation of smog and ozone pollution, which have adverse effects on air quality and human health. In addition, VOCs in ozone (O 3 ), secondary organic aerosols (SOA) and peroxyacetyl nitrate (PAN) play a key role in the formation of secondary air pollutants. The most common VOCs groups include alkanes, alkenes, aromatics, halogenated hydrocarbons and carbonyls. VOCs come from a variety of natural and anthropogenic sources, including emissions from biological sources and emissions from human activities, such as fuel an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G83/00B01J23/75B01J37/08B01D53/86B01D53/72
CPCC08G83/008B01J23/75B01J37/086B01D53/8668B01D2257/708
Inventor 莫胜鹏丁学刚廖雷李沫睿李俊曾鹏樊银明黄丽丽
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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