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A kind of copper-doped manganese dioxide catalyst and preparation method thereof

A manganese dioxide and catalyst technology, which is applied in the field of copper-doped manganese dioxide catalyst material and its preparation, can solve the problems of low doping amount of manganese-cerium catalyst, difficult control of doping amount and the like, and achieves high doping degree , the effect of high reaction efficiency

Active Publication Date: 2019-02-26
NINGBO TAIAN NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The manganese-cerium catalyst prepared by this method is not high in the doping amount of cerium and the doping amount is also difficult to control

Method used

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  • A kind of copper-doped manganese dioxide catalyst and preparation method thereof
  • A kind of copper-doped manganese dioxide catalyst and preparation method thereof
  • A kind of copper-doped manganese dioxide catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Add 14.35g of manganese nitrate hexahydrate, 15.8g of potassium permanganate and 0.96g of copper powder into 400g of pure water, stir, and add nitric acid to adjust the pH of the solution to 2.0. Continue to stir to make it react at 0°C for 30 hours, then transfer the mixed solution and internally generated intermediate products to the reaction kettle, then place the above reaction kettle at 200°C for 1 hour reaction, take it out after the reaction is completed and cool, and clean , filtering and drying the resulting filter residue to obtain the copper-doped manganese dioxide catalyst material.

[0030] Through the energy spectrum test, the content of each component in the product of this embodiment is shown in Table 1, and the detailed energy spectrum is as shown in Table 1. figure 2 As shown, it shows that the synthesized copper-doped manganese dioxide catalyst material is a rod-shaped nanoscale material, and copper has been successfully doped into the lattice of man...

Embodiment 2

[0033] Add 1.98g manganese chloride tetrahydrate, 4.74g potassium permanganate and 0.64g copper powder to 370g pure water, stir, then add sulfuric acid to adjust the pH of the solution to 4.0. Continue to stir to make it react at 90°C for 1 hour, then transfer all the mixed solution and internally generated intermediate products to the reaction kettle, then place the reaction kettle at 150°C for 10 hours, take it out after the reaction is completed and cool, and clean , filtering and drying the resulting filter residue to obtain the copper-doped manganese dioxide catalyst material.

[0034] Through the energy spectrum test, the content of each component in the product of this embodiment is shown in Table 1, and the detailed energy spectrum is as shown in Table 1. image 3 As shown, it shows that the synthesized copper-doped manganese dioxide catalyst material is a rod-shaped nanoscale material, and copper has been successfully doped into the lattice of manganese dioxide.

[0...

Embodiment 3

[0037] Add 22.3g of manganese sulfate tetrahydrate, 18.96g of potassium permanganate and 3.2g of copper powder into 400g of pure water, stir, and then add hydrochloric acid to adjust the pH of the solution to 1.0. Continue to stir to make it react at room temperature for 15 hours, then transfer all the mixed solution and internally generated intermediate products to the reaction kettle, and then place the above reaction kettle at 100°C for 20 hours of reaction. After the reaction is completed, take it out after cooling, and clean it , filtering and drying the resulting filter residue to obtain the copper-doped manganese dioxide catalyst material.

[0038] The catalytic performance test is the same as in Example 1, and the test results show that the efficiency of the ultra-dispersed composite catalyst prepared in this example to catalyze and decompose 120 ppm of formaldehyde once at room temperature is 89%.

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Abstract

The invention discloses a preparation method for a copper-doped manganese dioxide catalyst. The method comprises the following steps: adding three kinds of raw materials, i.e., permanganate, a Mn<II> salt and copper powder into a solvent so as to obtain a reaction solution, adding an acid into the reaction solution so as to enable the reaction solution to be strongly acidic, carrying out stirring, and carrying out a precipitation reaction, thereby obtaining a mixed solution containing a precursor; and adding the mixed solution obtained after the precipitation reaction into a reactor for a hydrothermal reaction, then, carrying out washing and filtrating, and drying filtrated residue, thereby obtaining a copper-doped manganese dioxide catalyst material. According to the preparation method disclosed by the invention, the doped amount of copper can be controlled, a doping reaction is thorough, and the doped amount of copper can be increased greatly. The catalyst prepared by the preparation method is the copper-doped manganese dioxide catalyst material, the doping of lattice-held copper is achieved, and the catalytic decomposition reaction activity of the catalyst is greatly improved.

Description

technical field [0001] The invention relates to a functional inorganic material and a preparation method thereof, in particular to a copper-doped manganese dioxide catalyst material which catalyzes the decomposition of oxidative formaldehyde and a preparation method thereof. Background technique [0002] With the development of science and technology and the progress of human civilization, interior decoration has become popular. Pollutants such as formaldehyde and other pollutants produced in the interior decoration process are a kind of toxic and harmful components. Existing in the polluted environment indoors for a long time will seriously threaten human health. [0003] At present, there are many methods to solve the problem of formaldehyde pollution. Among them, transition metal oxides, especially manganese dioxide, are favored by people because of their low price and effective catalytic decomposition of formaldehyde and other pollutants. However, in the process of cata...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/889B01D53/86B01D53/72
CPCB01D53/72B01D53/8668B01D2255/2073B01D2255/20761B01D2257/702B01J23/8892
Inventor 黄建国肖鸽
Owner NINGBO TAIAN NEW MATERIAL TECH CO LTD
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