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Sulfur-resistant catalytic combustion catalyst as well as preparation method and application

A catalytic combustion and catalyst technology, which is applied in the direction of combustion methods, physical/chemical process catalysts, molecular sieve catalysts, etc., can solve the problems of sulfur poisoning and high cost, and achieve the characteristics of not easy sintering, overcoming high temperature and easy sintering, and high catalytic activity Effect

Inactive Publication Date: 2017-05-31
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a sulfur-resistant catalytic combustion catalyst with low price, excellent catalytic activity and certain sulfur resistance in view of the shortcomings of the existing noble metal catalysts, which are high in cost and prone to sulfur poisoning. Another object of the present invention is to provide The preparation method of above-mentioned catalyst, the present invention also has and the purpose is to provide the application of above-mentioned catalyst

Method used

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  • Sulfur-resistant catalytic combustion catalyst as well as preparation method and application
  • Sulfur-resistant catalytic combustion catalyst as well as preparation method and application
  • Sulfur-resistant catalytic combustion catalyst as well as preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0024] The crushed and sieved γ-Al 2 o 3 The carrier (16-30 mesh) was dried in an oven at 110° C. for 4 hours. Weigh 4.03gCu(NO 3 ) 2 ·3H 2 O, 9.70gCo(NO 3 ) 2 ·6H 2 O, in which the atomic ratio of copper to cobalt is 1:2, add a certain amount of deionized water to dissolve and configure a 25ml solution. 20g γ-Al 2 o 3 Immerse the equal volume of the carrier in the above mixed solution, ultrasonically vibrate at an ultrasonic frequency of 25kHz for 40min, dry at 110°C for 13h, and bake at 600°C in a muffle furnace for 5h to obtain a Cu-Co-O / γ-Al with a loading capacity of 20%. 2 o 3 catalyst.

Embodiment 2

[0026] The crushed and sieved 5A molecular sieve carrier (20-40 mesh) was dried in an oven at 120° C. for 4 hours. Weigh 2.01gCu(NO 3 ) 2 ·3H 2 O, 4.35gCo(NO 3 ) 2 ·6H 2 O, in which the atomic ratio of copper to cobalt is 1:2, add a certain amount of deionized water to dissolve and configure a 28ml solution. Immerse 20g of 5A molecular sieve carrier in equal volume in the above mixed solution, ultrasonically vibrate at an ultrasonic frequency of 20kHz for 100min, dry at 110°C for 12h, and bake at 500°C in a muffle furnace for 5h to obtain a 10% Cu-Co-O / 5A molecular sieve catalyst. The SEM image of the catalyst surface is attached figure 1 . Depend on figure 1 It can be seen that the copper oxide and cobalt oxide crystal particles on the surface of the catalyst are small and evenly distributed, and the catalyst still has the original pore structure of the molecular sieve after loading.

Embodiment 3

[0028] The crushed and sieved γ-Al 2 o 3 The carrier (16-30 mesh) was dried in an oven at 110° C. for 6 hours. Weigh 4.03gCu(NO 3 )2·3H 2 O, 9.70gCo(NO 3 ) 2 ·6H 2 O, 7.74gCe(NO 3 ) 2 ·6H 2 O, wherein the atomic ratio of copper, cobalt and cerium is 1:2:1, add a certain amount of deionized water to dissolve, and mix to obtain the active component solution. Immerse 20g of γ-Al2O3 carrier in equal volume in the above mixed solution, ultrasonically vibrate at an ultrasonic frequency of 28kHz for 35min, dry at 120°C for 10h, and bake in a muffle furnace at 600°C for 5h to obtain CeO with a loading capacity of 20%. 2 / Cu-Co-O / γ-Al 2 o 3 catalyst. The SEM image of the catalyst surface is attached figure 2 . Depend on figure 2 It can be seen that the catalyst still has a porous structure of aluminum oxide after loading.

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Abstract

The invention discloses a sulfur-resistant catalytic combustion catalyst as well as a preparation method and an application. The catalyst takes a gamma-Al2O3 or 5A molecular sieve as a carrier and takes copper-cobalt solid solution oxide and cerium oxide or the copper-cobalt solid solution oxide as an active component, wherein the loading mass of the active component is 10%-20% of the mass of a carrier, the catalyst is prepared with an ultrasonic-equivalent volume impregnation method, and the prepared catalyst is applied to catalytic combustion to eliminate industrial volatile organic waste gas pollution. The catalyst has certain sulfur resistance in catalytic combustion for treating organic waste gas and has the advantages that the activity and stability are high, the preparation method is simple and the like.

Description

technical field [0001] The invention belongs to the fields of environmental protection catalytic materials and air pollution control, and in particular relates to a sulfur-resistant catalytic combustion catalyst, a preparation method and an application. Background technique [0002] With the rapid development of the chemical industry, volatile organic compounds (VOCs)-based exhaust emissions not only cause great harm to human health, but also promote the generation of urban photochemical smog and haze, seriously polluting the atmospheric environment. Therefore, the control of volatile organic compounds has attracted the attention of environmental protection departments and enterprises at all levels. [0003] Commonly used VOCs treatment technologies include thermal combustion, catalytic combustion, adsorption, biological treatment, plasma oxidation, and photocatalytic oxidation. Among them, the catalytic combustion method refers to the flameless combustion of organic waste ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/83B01J29/72F23G7/07
CPCF23G7/07B01J23/002B01J23/83B01J29/7207F23G2209/14B01J2523/00B01J2523/3712B01J2523/845B01J2523/17B01J2523/31
Inventor 徐炎华刘志英张悦李溪于鹏钱红雅
Owner NANJING UNIV OF TECH
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