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Composite air purification catalyst and preparation method thereof

A composite catalyst and air purification technology, which is applied in the direction of physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problems of difficult to meet the needs of air purification, low performance activity, low specific surface area, etc., and achieve accelerated catalysis Decomposition efficiency, improved catalytic performance, high surface activity effect

Active Publication Date: 2017-01-18
UCHEER PURIFICATION & POLLUTION CONTROL TECH ZHEJIANG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the manganese dioxide catalyst material obtained by the ordinary precipitation method has the problems of low specific surface area and low performance activity, which makes its purification capacity low, and it is difficult to meet the current air purification needs in the air environment with complex air pollution and high pollutant content.

Method used

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  • Composite air purification catalyst and preparation method thereof
  • Composite air purification catalyst and preparation method thereof
  • Composite air purification catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Add 39.5g of potassium permanganate, 19.8g of manganese chloride tetrahydrate, 12.5g of copper sulfate pentahydrate and 13.6g of cerium nitrate hexahydrate in 1708g of pure water in turn, stir until fully dispersed and dissolved, and the speed of the mixer is 10r / min , reacted at 0°C for 300min. The above mixed solution was transferred to a high-pressure reactor, set to react at 150°C for 16 hours, then taken out, washed and filtered, and then dried at 60°C for 30 hours to obtain the air purification composite catalyst precursor.

[0060] Mix the above-mentioned composite catalyst precursor, silicon dioxide and clay uniformly according to the mass ratio of 1:2:1 to obtain composite granulated powder for use. Select 0.1mm alumina particles and add them to the disc granulator at a rotation speed of 60r / min for granulation. Water is used as a binder during the granulation process, and the mass ratio of composite granulation powder to water is The ratio is 1:0.2, and the g...

Embodiment 2

[0067] Add 28g of potassium permanganate, 28.7g of manganese nitrate hexahydrate, 8.5g of copper chloride dihydrate and 17.7g of cerium chloride hexahydrate in sequence in 786g of pure water, stir until fully dispersed and dissolved, and the speed of the mixer is 1000r / min , reacted at 100°C for 10min. The above mixed solution was transferred to a high-pressure reactor, set to react at 100°C for 30 hours, then taken out, washed and filtered, and then dried at 200°C for 2 hours to obtain the air purification composite catalyst precursor.

[0068] Mix the above-mentioned composite catalyst precursor, silica micropowder and clay uniformly according to the mass ratio of 1:0.5:2 to obtain composite granulated powder for use. Select 0.2mm silica particles and add them to the disc granulator at a rotational speed of 45r / min for granulation. Water is used as the binder during the granulation process. The added mass of the composite granulation powder and water The ratio is 1:0.3, and...

Embodiment 3

[0072] Add 31.6g of potassium permanganate, 17.8g of manganese sulfate tetrahydrate, 1.2g of copper nitrate trihydrate and 6.4g of cerium sulfate tetrahydrate into 285g of pure water in turn, stir until fully dispersed and dissolved, and the speed of the mixer is 150r / min. React at 20°C for 180min. The above mixed solution was transferred to a high-pressure reactor, set to react at 180°C for 2 hours, then taken out, washed and filtered, and then dried at 100°C for 20 hours to obtain the air purification composite catalyst precursor.

[0073] The above composite catalyst precursor, diatomaceous earth and clay are uniformly mixed according to the mass ratio of 1:0.2:1 to obtain composite granulated powder for use. Select 0.2mm zirconia particles and add them to the disc granulator, and the rotation speed is 10r / min for granulation. Water is used as the binder in the granulation process, and the mass ratio of composite granulation powder to water is The ratio is 1:0.45, and the ...

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Abstract

The invention discloses a composite air purification catalyst and a preparation method thereof. The composite air purification catalyst is prepared from manganese oxide composite copper oxide and cerium oxide. The preparation method comprises the steps that an oxidant, MnII salt, CuII salt and CeIII salt are dissolved in a solvent, the mixture is transferred to a high-pressure reaction kettle after mixing reaction, performs high temperature and high pressure reaction and then is filtered, cleaned and dried to obtain a composite catalyst precursor; the composite catalyst precursor is mixed with auxiliary materials and clay to get compound granulation powder; the compound granulation powder is granulated to obtain the composite air purification catalyst. The composite air purification catalyst prepared by adopting the preparation method is high in surface activity and high in catalytic performance.

Description

technical field [0001] The invention relates to a material used in the field of environmental protection, in particular to a composite catalyst material used for purifying gas. Background technique [0002] At present, human beings are facing two major problems: environmental pollution and energy shortage, among which environmental pollution is particularly prominent. In the past hundred years, a large amount of hazardous waste has been produced in the process of human modern industrial development, which has caused serious pollution to the environment, making the content of pollutants in the atmosphere, soil and water far beyond the range that they can bear. Compared with the soil and water environment that can be treated differently, the atmospheric environment, especially the indoor air environment that people live on, directly affects human health. The pervasive air pollutants have become the primary problem that needs to be dealt with urgently. According to the differe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/889B01J29/00B01D53/85B01D53/44B01D53/72B01D53/66
CPCB01D53/8668B01D53/8675B01D53/8687B01J23/002B01J23/8892B01J29/00B01J2523/00B01J2523/17B01J2523/72B01J2523/3712Y02A50/20
Inventor 黄建国
Owner UCHEER PURIFICATION & POLLUTION CONTROL TECH ZHEJIANG CO LTD
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