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Catalyst composite support, catalyst based on catalyst composite support and preparation method of catalyst

A technology of catalyst carrier and composite carrier, which is applied in the direction of chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., which can solve the problem of poor performance and the influence of ozone catalytic oxidation nbsCOD catalyst on catalytic performance and other problems, to achieve the effect of reducing the amount of ozone, excellent carrier performance, and reducing operating costs

Inactive Publication Date: 2019-05-10
光大水务(深圳)有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problem that the carrier performance of the ozone catalytic oxidation nbsCOD catalyst is poor in the prior art, making the catalytic performance of the ozone catalytic oxidation nbsCOD catalyst affected, a catalyst composite carrier, a catalyst based on the carrier and a preparation method for the catalyst are provided; wherein

Method used

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  • Catalyst composite support, catalyst based on catalyst composite support and preparation method of catalyst
  • Catalyst composite support, catalyst based on catalyst composite support and preparation method of catalyst
  • Catalyst composite support, catalyst based on catalyst composite support and preparation method of catalyst

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preparation example Construction

[0049] The preparation method of the catalyst of the ozone catalytic oxidation nbsCOD based on composite support of the present invention, concrete steps are as follows:

[0050] S100, the carrier and the active ingredient are mixed and finely ground

[0051] The active components of the catalyst and the catalyst carrier are mixed and finely ground by using a ball milling tank, the rotating speed of the ball milling tank is 200-500r / min, and the ball milling time is 2-6h, so that a uniform dispersion system can be obtained efficiently; the catalyst carrier is the above-mentioned Composite carrier for supporting catalyst; after ball milling, a mixed fine material dispersion system is obtained, and the particle size of the mixed fine material obtained by mixing and fine grinding is ≤300 mesh, which makes the catalyst have a larger specific surface, which is conducive to improving catalytic activity and catalytic efficiency. It is worth noting that the mixed material is dried to ...

Embodiment 1

[0064] A kind of composite carrier for supporting catalyst of the present embodiment, comprises aluminum ash carrier and rho-alumina carrier, and the doping mass ratio of aluminum ash carrier and rho-alumina is 1:4; Wherein aluminum ash carrier is made of aluminum The ash is obtained by calcining, and the calcining temperature of the aluminum ash is 300-800°C.

[0065] The preparation method of a kind of composite carrier for loading catalyst of the present embodiment is as follows

[0066] (1) Calcining the aluminum ash, wherein the calcination temperature is 400° C., and the aluminum ash carrier is obtained after the calcination is completed;

[0067] (2) Mix and stir the aluminum ash carrier and the ρ-alumina carrier, and the doping mass ratio of the aluminum ash carrier and ρ-alumina carrier is 1:4 to obtain a composite carrier.

[0068] The aluminum ash carrier of this example and the rho-alumina carrier are jointly prepared to obtain a composite carrier with a large spe...

Embodiment 2

[0078] A kind of composite carrier for supporting catalyst of the present embodiment, comprises aluminum ash carrier and rho-alumina carrier, and the doping mass ratio of aluminum ash carrier and rho-alumina is 1:1; Wherein aluminum ash carrier is made of aluminum The aluminum ash is calcined at a temperature of 500 °C.

[0079] The preparation method of a kind of composite carrier for loading catalyst of the present embodiment is as follows

[0080] (1) Calcining the aluminum ash, wherein the calcination temperature is 500° C., and the aluminum ash carrier is obtained after the calcination is completed;

[0081] (2) Mix and stir the aluminum ash carrier and the ρ-alumina carrier, and the doping mass ratio of the aluminum ash carrier and ρ-alumina carrier is 1:1 to obtain a composite carrier.

[0082] The aluminum ash carrier of this example and the rho-alumina carrier are jointly prepared to obtain a composite carrier with a larger specific surface area, which provides more ...

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Abstract

The invention discloses a catalyst composite support, a catalyst based on the catalyst composite support and a preparation method of the catalyst, and belongs to the technical field of catalysts. Thecatalyst composite support comprises an aluminum ash support and a rho-alumina support in a mass ratio of 1:4 to 2:1, large specific surface area is provided, many attachment sites are provided for catalyst active components, and suitable supporting capacity of metal oxides is provided for the catalyst active components; the aluminum ash support and rho-alumina support in the composite support cancooperate to provide improved catalytic oxidative efficiency, so that catalytic oxidation performance of the catalyst is improved. As the composite support is used as a catalyst for matrix, oxygen content of ozone oxidized nbsCOD is greatly reduced, and operating cost is significantly reduced.

Description

technical field [0001] The invention belongs to the technical field of catalysts, and more specifically relates to a composite catalyst carrier, a catalyst based on the carrier and a preparation method of the catalyst. Background technique [0002] The catalyst carrier, also known as the support, is one of the components of the supported catalyst. The catalyst support is the skeleton of the catalyst active component, which has the function of supporting the catalyst active component and dispersing the active component; at the same time, the catalyst support can also increase the strength of the catalyst. Most carriers are products in the catalyst industry, commonly used are alumina carriers, silica gel carriers, activated carbon carriers, etc. [0003] The catalyst carrier has an important influence on the catalytic effect of the catalyst, especially in the field of sewage treatment. If the performance of the catalyst carrier is poor, it will directly affect the catalytic a...

Claims

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Application Information

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IPC IPC(8): B01J23/745B01J35/08C02F1/78
Inventor 于华芹王冠平杜庆洋石伟于豹刘晓静孙琦
Owner 光大水务(深圳)有限公司
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