Ozonolysis catalyst and preparing method and application thereof

An ozone decomposition and catalyst technology, which is applied in separation methods, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc. Ozone decomposition ability, rich ozone decomposition active sites, combined with the effect of not easily falling off

Active Publication Date: 2018-07-31
CHINA SCI EVERLAST TECH CO LTD
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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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  • Ozonolysis catalyst and preparing method and application thereof
  • Ozonolysis catalyst and preparing method and application thereof
  • Ozonolysis catalyst and preparing method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0049] Weigh 3.16g of potassium permanganate and dissolve it in 50mL of deionized water, mix 150g of alumina pellets with a particle size of 2-3mm with the obtained solution, the potassium permanganate solution will completely wet the alumina pellets and heat at 120°C Drying at low temperature; Dissolve 25mL ethanol and 5mL glacial acetic acid in 30mL deionized water, then mix with the dried carrier, make the liquid fully infiltrate the carrier and stir, then put it in an oven at 50°C for 1 hour constant temperature reaction, remove excess The manganese precursor-coated regular carrier was obtained after the moisture was obtained; the obtained carrier was placed in a muffle furnace, and the temperature was raised to 500°C for 3 hours at a rate of 5°C / min for calcination, and the catalyst product was obtained after natural cooling.

[0050] In this example, a manganese dioxide catalyst was prepared by reducing potassium permanganate with ethanol on the surface of alumina pellets...

Embodiment 2

[0052] Weigh 3.16g of potassium permanganate and dissolve in 50mL of deionized water, take 150g of activated carbon particles with a particle size of 2-3mm and mix with the obtained solution, the potassium permanganate solution will completely wet the activated carbon particles and dry at 120°C; Dissolve 25mL of ethanol and 5mL of glacial acetic acid in 30mL of deionized water, then mix with the dried carrier, make the liquid fully infiltrate the carrier and stir, mix the solution with activated carbon particles, make the liquid fully infiltrate the carrier and stir, then put it in the oven The manganese precursor-coated regular support was obtained after removing excess water at a constant temperature of 60°C for 2 hours; the obtained support was placed in a muffle furnace, and the temperature was raised to 550°C at a rate of 5°C / min for calcination for 2.5h. The catalyst product was obtained after natural cooling.

[0053] In this example, a manganese dioxide catalyst was pr...

Embodiment 3

[0055] Weigh 6.76g of manganese sulfate and dissolve it in 50mL of deionized water, take 150g of alumina pellets with a particle size of 2-3mm and mix with the obtained solution, the manganese sulfate solution will completely wet the alumina pellets and dry them at 120°C; Dissolve 9.12g of ammonium persulfate, 5.28g of ammonium sulfate and 10g of potassium nitrate in 50mL of deionized water, then mix with the dried carrier, make the liquid fully infiltrate the carrier and stir, then put it in an oven at 50°C for constant temperature reaction 1h, the manganese precursor-coated regular support was obtained after removing excess water; the obtained support was placed in a muffle furnace, and the temperature was raised to 500°C at a rate of 5°C / min for calcination for 3h, and the catalyst product was obtained after natural cooling.

[0056] In this example, a manganese dioxide catalyst was prepared by oxidizing manganese sulfate on the surface of alumina pellets with ammonium persu...

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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 invention relates to the technical field of catalyst preparation and air pollution purification, in particular to an ozonolysis catalyst and its preparation method and application. Background technique [0002] Ozone (O 3 ) and oxygen (O 2 ) is an allotrope of oxygen, which has a double-edged sword effect on the environment on which human beings depend. In the atmospheric stratosphere, ozone is good for our living environment, it can resist harmful ultraviolet rays; however, near the surface, ozone is an invisible killer, which will cause varying degrees of damage to the human skin and nervous system It can also damage the immune function of the human body, cause chromosomal changes in lymphocytes, accelerate the aging of the human body, and lead to an increase in the birth rate of deformed children. The World Health Organization stipulates that the concentration of ozone in the environment for 8 hours of continuous work should not exceed 0.1ppm...

Claims

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Application Information

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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 CHINA SCI EVERLAST TECH CO LTD
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