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Mn/Ce/Cu-based low-temperature plasma catalyst as well as preparation and application

A low-temperature plasma and catalyst technology, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, gas treatment, etc., can solve industrial application limitations, poor thermal stability, chemical stability, etc. problems, such as high selectivity, high porosity, and simple preparation method.

Active Publication Date: 2018-12-07
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the relatively poor stability (including thermal stability, chemical stability, etc.) of the MOFs framework itself, its industrial application is greatly limited.

Method used

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  • Mn/Ce/Cu-based low-temperature plasma catalyst as well as preparation and application
  • Mn/Ce/Cu-based low-temperature plasma catalyst as well as preparation and application
  • Mn/Ce/Cu-based low-temperature plasma catalyst as well as preparation and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) 520 μL of 50% Mn(NO 3 ) 2 Aqueous solution, 1.94gCe(NO 3 ) 3 ·6H 2 O and 0.54gCu(NO 3 ) 2 ·3H 2 O was added to 80 mL of DMF, 1000 μL of formic acid was added, and ultrasonically mixed for 10 min to obtain a mixed solution;

[0033] (2) Place the mixed solution in an oven at 80°C for 10 hours. After the solution is cooled, remove the supernatant, add fresh DMF, soak and activate at room temperature for 12 hours, and obtain an activated crystal material (Mn / Ce / Cu-MOF);

[0034] (3) The activated crystal material is washed with DMF, filtered, and the filtered material is dried in a vacuum oven at 50°C; the dried crystal material is put into a muffle furnace and roasted at 300°C for 2h to obtain Mn / Ce / Cu based low temperature plasma catalyst.

Embodiment 2

[0036] (1) 520 μL of 50% Mn(NO 3 ) 2 Aqueous solution, 1.94gCe(NO 3 ) 3 ·6H 2 O and 0.81gCu(NO 3 ) 2 ·3H 2 O was added to 80 mL of DMF, 1200 μL of formic acid was added, and ultrasonically mixed for 10 min to obtain a mixed solution;

[0037] (2) Place the mixed solution in an oven at 100°C for 12 hours. After the solution is cooled, remove the supernatant, add fresh DMF, soak and activate at room temperature for 18 hours, and obtain an activated crystal material (Mn / Ce / Cu-MOF);

[0038](3) The activated crystal material is washed with DMF, filtered, and the filtered material is dried in a vacuum oven at 50°C; the dried crystal material is baked in a muffle furnace at 350°C for 2.5h to obtain Mn / Ce / Cu based low temperature plasma catalyst.

Embodiment 3

[0040] (1) 520 μL of 50% Mn(NO 3 ) 2 Aqueous solution, 1.94gCe(NO 3 ) 3 ·6H 2 O and 1.08gCu(NO 3 ) 2 ·3H 2 O was added to 80 mL of DMF, 1500 μL of formic acid was added, and ultrasonically mixed for 10 min to obtain a mixed solution;

[0041] (2) Place the mixed solution in an oven at 120°C for 15 hours. After the solution is cooled, remove the supernatant, add fresh DMF, soak and activate at room temperature for 24 hours, and obtain an activated crystal material (Mn / Ce / Cu-MOF);

[0042] (3) The activated crystal material is washed with DMF, filtered, and the filtered material is dried in a vacuum oven at 50° C.; the dried crystal material is put into a muffle furnace and roasted at 400° C. for 3 hours to obtain Mn / Ce / Cu based low temperature plasma catalyst.

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Abstract

The invention belongs to the technical field of catalysis materials and discloses an Mn / Ce / Cu-based low-temperature plasma catalyst as well as preparation and application. The preparation comprises the following steps: dissolving manganese-containing metal salt, cerium-containing metal salt and copper-containing metal salt into DMF (Dimethyl Formamide); adding an organic ligand and carrying out ultrasonic treatment; uniformly mixing and taking an obtained mixed solution to react at the temperature of 80 to 120 DEG C; immersing a solid product in the DMF and activating to obtain an activated crystal; washing and drying the activated crystal; and then roasting at 300 to 400 DEG C to obtain the Mn / Ce / Cu-based low-temperature plasma catalyst. According to the Mn / Ce / Cu-based low-temperature plasma catalyst, a MOFs material is calcined at high temprature to prepare a nano porous carbon-based catalysis material and the material has the advantages that metal active components are highly dispersed, the structure is stable and the like; and the agglomeration of the metal active components can be effectively avoided, and the catalysis activity and the stability are remarkably improved.

Description

technical field [0001] The invention belongs to the technical field of catalytic materials, and in particular relates to a Mn / Ce / Cu-based low-temperature plasma catalyst and its preparation and application. Background technique [0002] Volatile organic compounds (volatile organic compounds, VOCs) are various, including alkanes, olefins, halogenated hydrocarbons, esters, aldehydes, ketones and aromatic compounds, mainly from pharmaceutical, petrochemical, printing and other industries. Most VOCs are toxic and will react under light to form photochemical smog, which is one of the precursors of ozone pollution and PM2.5. Long-term stay in an environment containing volatile organic compounds will increase the possibility of diseases such as cancer. Therefore, it has extremely important application value to carry out industrial volatile organic compound pollution control. [0003] In order to effectively control VOCs pollution in organic waste gas, the technologies widely used ...

Claims

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Application Information

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IPC IPC(8): B01J23/889B01D53/86B01D53/44
CPCB01D53/8687B01D2257/708B01D2259/818B01J23/8892
Inventor 李忠李根夏启斌赵长多
Owner SOUTH CHINA UNIV OF TECH
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