A kind of ozone decomposition catalyst and its preparation method and application

An ozone decomposition and catalyst technology, applied in separation methods, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc. Ozone decomposition active site, efficient ozone decomposition ability, and the effect of reducing energy consumption

Active Publication Date: 2021-03-26
INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the prior art, the ozonolysis catalyst is directly loaded on the carrier by the impregnation method. However, the products obtained by impregnation method tend to have insufficient bonding force between the catalyst and the carrier, and the catalyst is easy to fall off.

Method used

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  • A kind of ozone decomposition catalyst and its preparation method and application
  • A kind of ozone decomposition catalyst and its preparation method and application
  • A kind of ozone decomposition catalyst and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] 3.16 g of potassium permanganate is soluble in 50 ml of deionized water, and the alumina ball of 150 g of a particle size of 2 to 3 mm is mixed with the resulting solution, and the potassium permanganate solution will completely wet the alumina ball after 120 ° C. Drying; 25 ml of ethanol and 5 ml of glacial acetic acid are dissolved in 30 ml of deionized water, then mixed with dry carrier, so that the liquid is sufficiently infiltrating the carrier and stirring, then placed in an oven at 50 ° C for 1 h, remove extra After the moisture obtained, the manganese precursor was coated; placed in a muffle furnace, raised at a rate of 5 ° C / min to 500 ° C calcined for 3 h, and the catalyst product was obtained after natural cooling.

[0050] In this embodiment, the mammanese oxide catalyst was prepared by using ethanol using ethanol on the surface of the alumina spheroid. The outer surface of the catalyst was evenly brownish black, and the molded catalyst was not removed. Evalua...

Embodiment 2

[0052] 3.16 g of potassium permanganate is soluble in 50 ml of deionized water, and the activated carbon particles 150g having a diameter of 2 to 3 mm are mixed with the resulting solution, and the potassium permanganate solution is completely wetted at 120 ° C after drying; 25 ml of ethanol and 5 ml of glacial acetic acid were dissolved in 30 ml of deionized water, then mixed with dry carrier, so that the liquid sufficiently infiltrated the carrier and stirred, mixed the solution and activated carbon particles, so that the liquid sufficiently infiltrated the carrier and stirred, then put it in an oven The constant temperature reactive reaction at 60 ° C, the regular carrier obtained by the manganese precursor obtained after the excess moisture was removed; the resulting carrier was placed in a muffle furnace, and the rate was raised to 550 ° C for 2.5 h at a rate of 5 ° C / min. Naturally, the catalyst product is obtained.

[0053] In this embodiment, the cementation of potassium...

Embodiment 3

[0055] 6.76 g of manganese sulfate is dissolved in 50 ml of deionized water, and the alumina ball of 150 g of a particle size of 2 to 3 mm is mixed with the resulting solution, the manganese sulfate is completely wetted after drying at 120 ° C after mixing the alumina ball; 9.12 g of ammonium sulfate, 5.28 g of ammonium sulfate and 10 g of potassium nitrate were dissolved in 50 ml deionized water, and then mixed with dry carrier, so that the liquid sufficiently infiltrated the carrier and stirred, then placed in an oven at 50 ° C at 50 ° C at 50 ° C. 1H, the regular carrier obtained by the manganese precursor obtained after excess moisture was removed; the resulting carrier was placed in a muffle furnace, raised at a rate of 5 ° C / min, and calcined for 3 h at a rate of 500 ° C, naturally catalyst product.

[0056] In this example, manganese dioxide catalysts were formed by oxidizing manganese sulfate using sulfate, and the outer surface of the catalyst was uniform, and the formi...

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Abstract

The invention relates to an ozonolysis catalyst and a preparing method and application thereof. The method comprises the steps of mixing a forming carrier with a manganese source solution, after fullwetting, conducing drying, then mixing the mixture with additive, conducting a reaction at constant temperature, after the reaction is completed, obtaining a regular carrier covered with a manganese precursor, and after baking, obtaining a catalyst product, wherein when manganese in a manganese source is at +7 price, the additive is reductant, and when manganese in the manganese source is at +2 price, the additive is oxidizing agent. The catalyst preparing process and the forming process are integrated, on the basis of the forming carrier, efficient manganese-based ozone catalyst is subjectedto in-situ growth on the outer surface of the forming carrier, the catalyst is stably combined with the carrier, the surface of the catalyst is stable, powder does not easily fall off, the particle size is adjustable, the appearance is formed, the ozonolysis capability is also efficient, the ozonolysis catalyst conveniently fills all air purifiers or fresh air system modules, production of an airpurification module can be accelerated, and the application prospect is good.

Description

Technical field [0001] The present invention relates to catalyst preparation and the field of air pollution purification, and more particularly to an ozone decomposition catalyst and a preparation method thereof. Background technique [0002] Ozone (O 3 ) And oxygen (O 2 ) Is a homologous body of oxygen element, and there is a double-edged sword for human dependence. In the same temperature layer, ozone is good for our living environment, it can resist harmful ultraviolet rays; however, in the near-place table, ozone is an invisible killer, which will have different degrees of skin and nervous system, etc. Impact, it can also damage the human immune function, resulting in chromosome lesions in lymphocytes, accelerating the aging of the human body, resulting in an increase in the birth rate of malformation. The World Health Organization stipulates that the concentration of ozone in the 8-hour environment continuous work cannot exceed 0.1 ppm. At present, there are ozone pollution ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/34B01D53/86B01D53/66
CPCB01D53/8675B01J23/34Y02A50/20
Inventor 贺泓邓华马金珠李要彬单文坡康顺宇
Owner INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI
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