Adsorptive catalyst and preparation method and application thereof as well as air purification device, and air purification method and application thereof

A catalyst and air technology, applied in the field of adsorption catalysts, can solve the problems of low bonding strength of adsorption catalytic components and electric heating carriers, negative catalytic activity of catalysts, etc., and achieve the effects of improving industrial application prospects, good catalytic purification effect, and simplified process.

Active Publication Date: 2015-09-30
GD MIDEA AIR-CONDITIONING EQUIP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, due to the difference in thermal expansion coefficient of the above-mentioned technology, frequent heating and cooling will lead to the peeling off of the adsorbed catalytic component and the electric heating carrier, that is, the binding strength of the adsorbed catalytic component an

Method used

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  • Adsorptive catalyst and preparation method and application thereof as well as air purification device, and air purification method and application thereof

Examples

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Example Embodiment

[0035] According to a preferred embodiment of the present invention, the hydrophobic silica surface is rich in methyl groups and / or fluoroalkyl groups, with a particle size of 3-15 nm, preferably 10-15 nm, and a specific surface area of ​​600-1000 m 2 / g, preferably 610-750m 2 / g.

[0036] According to the catalyst of the present invention, the thickness of the coating is preferably 5-1000 μm, preferably 150-1000 μm.

[0037] According to the catalyst of the present invention, the catalytically active component capable of oxidizing gaseous pollutants can be conventionally selected in the field. For the present invention, it is preferred that the catalytically active component capable of oxidizing gaseous pollutants is metal oxide and / Or noble metal element, preferably MnO x , Co 3 O 4 , FeO x , CuO, NiO, TiO 2 , Al 2 O 3 One or more of, Pt, Pd, Au, Ru, Rh and Ag.

[0038] According to an embodiment of the present invention, it is preferred that the catalytically active component ca...

Example Embodiment

[0080] Example 1

[0081] Preparation of adsorption catalytic catalyst:

[0082] (1) The hydrophobic SiO 2 (The particle size is 14.2nm by the laser particle size analyzer, the hydrophobic angle is 121.1°, and the specific surface area is 615.3m 2 / g), manganese nitrate: cobalt nitrate (1:1, weight ratio) and a mixture of dispersant PEG and PVA (1:1, weight ratio) to make paint;

[0083] (2) Using fin-shaped aluminum as a structural carrier, the surface of the fin-shaped aluminum is cleaned by pickling-alkaline washing and water washing, and the fin-shaped aluminum is pretreated by anodizing to make the surface rough; The coating was coated on fin-shaped aluminum by pressure spraying, and then calcined at 400°C for 2h after drying to obtain a catalyst (the coating thickness is 500μm, and the coating contains 48% by weight of hydrophobic silica and 48% by weight. Active ingredients and 4% by weight dispersant, of which hydrophobic SiO 2 The particle size is 14.2nm by the laser partic...

Example Embodiment

[0087] Example 2

[0088] Preparation of adsorption catalytic catalyst:

[0089] (1) Combine hexamethyl simethicone, aluminum nitrate and ammonium chloroplatinate (molar ratio of 50:1) and a mixture of dispersant PEG, β-cyclodextrin and hydroxymethyl cellulose (1:1: 1. Weight ratio) made into paint;

[0090] (2) Using mullite honeycomb ceramic as the structural carrier, the surface of the mullite honeycomb ceramic is cleaned by pickling-alkaline washing and water washing, and the coating is applied on the mullite honeycomb ceramic by coating After drying, calcined at 300℃ for 5h, 150℃ hydrogen reduction for 1h to obtain the catalyst (coating thickness is 967μm, the coating contains 80% by weight of hydrophobic silica, 10% by weight of active components and 10% by weight of dispersion Agent, the hydrophobic SiO 2 The particle size is 10nm by the laser particle size analyzer, the hydrophobic angle is 138.2°, and the specific surface area is 724.5m 2 / g).

[0091] Air purification meth...

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Abstract

The invention relates to the field of air purification, and particularly provides an adsorptive catalyst, and a preparation method and application thereof. The adsorptive catalyst comprises a structured carrier and a coating distributed on the inner surface and/or outer surface of the structured carrier; the total weight of the coating is standard, and the coating comprises 50-95% by weight of hydrophobic silica and 5-50% by weight of catalytically active components capable of oxidizing gaseous pollutants. The invention further provides an air purification device, and an air purification method and application thereof. The adsorptive catalyst provided by the invention can enhance the adsorption and diffusion processes of the gaseous pollutants, especially non-polar gaseous pollutants, in porous channels of the adsorptive catalyst to realize an excellent catalytic purification effect, and is particularly suitable for catalytic purification reactions under high-moisture and high-humidity working conditions. The preparation method is simple in process and low in cost and has the industrial production potential.

Description

technical field [0001] The present invention relates to an adsorption catalyst, a preparation method of the adsorption catalyst, and an application of the adsorption catalyst in air purification; an air purification device, an air purification method and its application in a household with air purification function Applications in electrical appliances. Background technique [0002] There are various gaseous pollutants in the enclosed space, but formaldehyde, ozone, and benzene series (benzene, toluene, xylene) are the main pollutants. Around the air purification treatment in the closed space, adsorption method and catalytic purification method are more commonly used at present. For example, the adsorption method achieves the purpose of removing gaseous pollutants through the adsorption of gaseous pollutants on the adsorbent. However, the adsorption method is a physical method, and the gaseous pollutants can easily reach adsorption saturation on the adsorbent, and the satur...

Claims

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Application Information

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IPC IPC(8): B01J20/10B01J20/30B01D53/86B01D53/72B01D53/58B01D53/52B01D53/62B01D46/00B01J23/889B01J23/42B01J23/89B01J35/02B01J35/04
CPCY02A50/20Y02A50/2351
Inventor 刘刚
Owner GD MIDEA AIR-CONDITIONING EQUIP CO LTD
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