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Preparation method, product and application of carbon-supported activated mnox

A carbon-supported and active technology, which is applied in the field of preparation of carbon-supported active MnOx, can solve problems such as difficult preparation of supported catalysts, and achieve the effects of maintaining degradation effect, strong stability and simple operation

Inactive Publication Date: 2016-06-15
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, calcination in air will produce a lot of ash, and it is difficult to prepare supported catalysts; there are relatively few studies on the preparation of catalysts by calcination in nitrogen

Method used

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  • Preparation method, product and application of carbon-supported activated mnox
  • Preparation method, product and application of carbon-supported activated mnox
  • Preparation method, product and application of carbon-supported activated mnox

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Add 3g of activated carbon to manganese sulfate solution (100ml, 0.2mol / L) with a molar mass of 0.02mol, stir at room temperature for 20min, mix well and let stand for 12h, then add equimolar ammonium persulfate solution (200ml, 0.1mol / L) / L), stirred and mixed at room temperature, then carried out hydrothermal reaction, the temperature was 120°C, and the time was 12h. After the hydrothermal reaction, it was naturally cooled to room temperature, centrifuged, the solid was washed with water, and finally dried to obtain carbon-supported active MnOx, where x is generally Between 3 and 4, the following examples are the same.

[0034] The carbon-supported active MnO prepared in the present embodiment is tested for performance respectively, and the test results are as follows: figure 1 , figure 2 and image 3 Shown:

[0035] figure 1 It is a Fourier transform infrared spectrogram, and the changes of functional groups on the surface of activated carbon before and after lo...

Embodiment 2

[0039] Add 3g of activated carbon to manganese sulfate solution (100ml, 0.4mol / L) with a molar mass of 0.04mol, stir at room temperature for 20min, mix well and let stand for 12h, then add equimolar ammonium persulfate solution (200ml, 0.2mol / L), stirred and mixed at room temperature, then carried out hydrothermal reaction at 120°C for 12 hours, cooled naturally to room temperature after hydrothermal reaction, centrifuged, washed the solid with water, and finally dried to obtain carbon-supported active MnOx.

Embodiment 3

[0041] Add 3g of activated carbon to manganese sulfate solution (100ml, 0.2mol / L) with a molar mass of 0.02mol, stir at room temperature for 20min, mix well and let stand for 12h, then add equimolar ammonium persulfate solution (200ml, 0.1mol / L) / L), stirred and mixed at room temperature, and carried out hydrothermal reaction at 140°C for 12 hours. After hydrothermal reaction, it was naturally cooled to room temperature, centrifuged, the solid was washed with water, and finally dried to obtain carbon-supported active MnOx.

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Abstract

The invention discloses a preparation method of carbon-supported active MnOx. The method comprises the following steps: adding active carbon into an aqueous solution of manganese salt, stirring, standing, adding an aqueous solution of persulfate, performing hydrothermal reaction at 120-160 DEG C, after the hydrothermal reaction is finished, cooling, separating the solid, washing and drying to obtain the carbon-supported active MnOx. The invention further discloses the product prepared by the method and application of the product to treatment of dye wastewater. The operation of treating dye wastewater by the carbon-supported active MnOx disclosed by the invention is simple, and the mineralization degradation process can be finished by only directly adding the product into a \ solution containing dye wastewater without any oxidizing agent and stirring for reacting at the room temperature condition; the product has an environment-friendly effect, is low in cost, and has industrial application prospect.

Description

technical field [0001] The invention belongs to the field of water treatment and environmental catalysis, and in particular relates to a preparation method, product and application of carbon-supported active MnOx. Background technique [0002] At present, the development of the textile industry has caused increasingly serious water environment pollution, and a large number of pollutants in the water body threaten the health of human beings themselves. According to statistics, the annual output of dyes in the world is about 700,000 tons, of which about 10-15% is discharged into the environment in the form of waste water, and azo dyes are the largest type of dyes used in industry. Due to the complex composition of dye wastewater, high chromaticity and high COD, it has become one of the most difficult industrial wastewater to treat. At present, dye wastewater treatment methods mainly include physical methods, chemical methods, biological methods and some combined processes. W...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/34C02F1/72
Inventor 文岳中徐丽丽刘维屏
Owner ZHEJIANG UNIV
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