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Catalyst for purifying volatile organic pollutant and ozone in air under normal temperature as well as preparation and use thereof

A volatile organic and air-purifying technology, applied in metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve secondary pollution, low pollutant removal rate, Narrow application range and other problems, to achieve the effect of small gas resistance, low cost and high removal efficiency

Inactive Publication Date: 2008-11-05
SHENZHEN GREEN WELCOME TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the problems of low pollutant removal rate, easy to cause secondary pollution and narrow application range in the existing technology for purifying volatile organic pollutants and ozone in the air, and provides a high-efficiency purification method for purifying organic pollutants in the air at normal temperature. Catalyst for Pollutants and Ozone

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Using three-dimensional porous nickel foam as the carrier, cut four pieces of foam nickel with a size of 150mm×25mm×2mm (L×W×H), wash them with deionized water, and dry them at 100°C to obtain a Bubble nickel weight is 1.6g; Take by weighing 20g of aluminum glue (Al 2 o 3·6H 2 0), and add 140g deionized water to dissolve to make alumina colloid; put the clean foamed nickel into the aluminum colloid and soak it for 10 minutes, then take it out, dry the clear water, blow it off with an air compressor, and then heat it at 100°C After drying at low temperature for 2 hours, it was calcined at 500° C. for 4 hours, cooled and weighed. Repeat the above steps until γ-Al 2 o 3 The loading of the coating is 0.96g, and the γ-Al 2 o 3 / Foamed nickel composite carrier. Weigh manganese nitrate (Mn(NO 3 ) 2 ·6H 2 O) 2.33g, copper nitrate (Cu(NO 3 ) 2 ·6H 2 O) 2.36g, iron nitrate (Fe(NO 3 ) 3 9H 2 O) 6.46g, cobalt nitrate (Co(NO 3 ) 2 ·6H 2 O) 2.32g, nickel nitrate (...

Embodiment 2

[0047] Cut the foamed nickel carrier of the specifications described in Example 1, and make four identical clean foamed nickels according to the conditions and steps of Example 1. Weigh 20g of aluminum glue (Al 2 o 3 ·6H 2 O), and add 180g deionized water to dissolve, make alumina colloid. Put the clean foamed nickel into the aluminum glue and soak it for 10 minutes, take it out, shake off the clear water, blow it off with an air compressor, dry it at 120°C for 2 hours, bake it at 600°C for 4 hours, and cool it down. weighing. Repeat the above steps until γ-Al 2 o 3 The loading of the coating is 0.64g, and the γ-Al 2 o 3 / Foamed nickel composite carrier. Weigh manganese nitrate (Mn(NO 3 ) 2 ·6H 2 O) 1.16g, copper nitrate (Cu(NO 3 ) 2 ·6H 2 O) 1.18g, iron nitrate (Fe(NO 3 ) 3 9H 2 O) 3.23g, cobalt nitrate (Co(NO 3 ) 2 ·6H 2 O) 1.16g, nickel nitrate (Ni(NO 3 ) 2 ·6H 2 O) 1.24g, were dissolved in 10ml deionized water respectively, and stirred to obtain cor...

Embodiment 3

[0054] Cut the foamed nickel carrier of the specifications described in Example 1, and make four identical clean foamed nickels according to the conditions and steps of Example 1. Weigh 20g of aluminum glue (Al 2 o 3 ·6H 2 O), and add 100g deionized water to dissolve, make alumina colloid. Put the clean foamed nickel into the aluminum glue and soak it for 10 minutes, take it out, shake off the clear water, blow it off with an air compressor, dry it at 120°C for 2 hours, bake it at 600°C for 4 hours, and cool it down. weighing. Repeat the above steps until γ-Al 2 o 3 The loading of the coating is 1.28g, and the γ-Al 2 o 3 / Foamed nickel composite carrier. Weigh manganese nitrate (Mn(NO 3 ) 2 ·6H 2 O) 3.49g, copper nitrate (Cu(NO 3 ) 2 ·6H 2 O) 3.54g, iron nitrate (Fe(NO 3 ) 3 9H 2 O) 9.7g, cobalt nitrate (Co(NO 3 ) 2 ·6H 2 O) 3.48g, nickel nitrate (Ni(NO 3 ) 2 ·6H 2 O) 3.72g, were dissolved in 10ml deionized water respectively, and stirred to obtain the ...

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Abstract

The invention discloses a method and a catalyst for simultaneously purifying volatile organic contaminants in the air and ozone under room temperature and application thereof. The purifying method is that: ozone is catalytically decomposed under room temperature to generate highly active oxygen atoms to further oxidize volatile organic contaminants in the air and at last carbon dioxide and water are generated; the catalyst takes three-dimensional porous metal as a vector, activated carbon, silicon oxide, aluminum oxide and compound materials thereof as a coating and transition metal oxides of Mn, Cu, Fe, Ni and Co as active components. The method can remove organic contaminants and ozone under room temperature at the same time without heating, the operation process is simple and the removal rate of ozone and organic contaminants is high. Meanwhile, the catalyst of the invention is prepared by impregnation, wherein, the process is simple; the catalyst has large specific surface area, low air resistance, excellent performance and low cost and can be widely applied to purifying industrial organic waste gas and organic contaminants in the rooms.

Description

technical field [0001] The invention relates to a catalyst for purifying volatile organic pollutants and ozone in air at normal temperature, a preparation method and application thereof. Background technique [0002] Volatile organic pollutants (VOCs) are a major air pollution, widely originating from coating, petrochemical and other industries, as well as traffic and human activities. VOCs are mostly toxic, carcinogenic, and easy to cause photochemical smog and damage the ozone layer, which has brought serious harm to the natural environment and human health. The current methods of treating organic waste gas usually require heating, such as thermal combustion and catalytic combustion, which complicate the treatment process and increase the cost. Moreover, the outlet gas temperature is high, and it needs to be cooled or discharged at high altitude. Therefore, methods that can remove organic waste gas at room temperature have attracted more and more attention. At present, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/86B01J23/889B01D53/66B01D53/72
Inventor 叶代启黄海保严义清关绣娟
Owner SHENZHEN GREEN WELCOME TECH
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