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Preparation method of load-type metallic oxide ozone catalytic oxidation catalyst

A technology of ozone catalytic oxidation and oxidation, which is applied in the preparation of supported catalysts and the preparation of supported metal oxide ozone catalytic oxidation catalysts, can solve the problems of increased processing costs, low reaction rate, and difficult recovery, and achieve production Low preparation cost, simple preparation process, good catalytic effect

Inactive Publication Date: 2012-08-08
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004](1) Ozone is unstable in water and the mass transfer efficiency is low, resulting in low actual utilization rate of ozone and increasing the treatment cost;
[0005](2) Ozone oxidation has high selectivity, low reaction rate to certain organic pollutants, low removal rate and low salinity;
First, the catalyst is easily lost during the reaction, recovery is difficult, the reuse rate is low, and the treatment cost is high; second, the introduction of metal ions into the treated water not only increases the difficulty of subsequent treatment and increases the treatment cost, but also affects the quality of the effluent. Safety causes hidden dangers, and it is not suitable for application in drinking water treatment, which limits the scope of application of this technology

Method used

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  • Preparation method of load-type metallic oxide ozone catalytic oxidation catalyst
  • Preparation method of load-type metallic oxide ozone catalytic oxidation catalyst
  • Preparation method of load-type metallic oxide ozone catalytic oxidation catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A preparation method of supported metal oxide ozone catalytic oxidation catalyst, it comprises the steps:

[0030] (1) Carrier pretreatment: select ordinary ceramic filter balls with a particle size of about 3.0 mm as the carrier, wash them with deionized water for 2 to 5 times, and soak the washed ceramic filter balls in 0.1mol / L dilute hydrochloric acid for 24 hours , and then washed with deionized water until the effluent is neutral, then dried to obtain pretreated ceramic filter balls;

[0031] (2) The pretreated ceramic filter ball is 0.5mol / L nickel nitrate (Ni(NO 3 ) 2 ·6H 2 O) soaking in the solution, drying the obtained soaking material after soaking for 24 hours, and obtaining ceramic filter balls after soaking and drying;

[0032] (3) Roast the impregnated and dried ceramic filter balls in a muffle furnace at 500°C (heating rate: 10°C / min) for 5 hours to obtain a roasted product;

[0033] (4) The calcined product is washed with deionized water for 2 to 5 ...

Embodiment 2

[0036] A preparation method of supported metal oxide ozone catalytic oxidation catalyst, it comprises the steps:

[0037] (1) Pretreatment of the carrier: select a ceramic filter ball with a particle size of about 3.0 mm as the carrier, wash it with deionized water for 2 to 5 times, soak the washed ceramic filter ball in 0.1mol / L dilute hydrochloric acid for 24 hours, Then wash with deionized water until the effluent is neutral, then dry to obtain pretreated ceramic filter balls;

[0038] (2) The pretreated ceramic filter ball is 0.1mol / L nickel nitrate (Ni(NO 3 ) 2 ·6H 2 O) soaking in the solution, drying the obtained soaking material after soaking for 24 hours, and obtaining ceramic filter balls after soaking and drying;

[0039] (3) Roast the impregnated and dried ceramic filter balls in a muffle furnace at 500°C (heating rate: 10°C / min) for 5 hours to obtain a roasted product;

[0040] (4) The calcined product is washed with deionized water for 2 to 5 times and then dr...

Embodiment 3

[0043] A preparation method of supported metal oxide ozone catalytic oxidation catalyst, it comprises the steps:

[0044] (1) Pretreatment of the carrier: select a ceramic filter ball with a particle size of about 3.0 mm as the carrier, wash it with deionized water for 2 to 5 times, soak the washed ceramic filter ball in 0.1mol / L dilute hydrochloric acid for 24 hours, Then wash with deionized water until the effluent is neutral, then dry to obtain pretreated ceramic filter balls;

[0045] (2) The pretreated ceramic filter ball is 0.3mol / L nickel nitrate (Ni(NO 3 ) 2 ·6H 2 O) soaking in the solution, drying the obtained soaking material after soaking for 24 hours, and obtaining ceramic filter balls after soaking and drying;

[0046] (3) Roast the impregnated and dried ceramic filter balls in a muffle furnace at 500°C (heating rate: 10°C / min) for 5 hours to obtain a roasted product;

[0047] (4) The calcined product is washed with deionized water for 2 to 5 times and then drie...

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Abstract

The invention relates to a preparation method of a catalyst, in particular to a preparation method of a load-type metallic oxide ozone catalytic oxidation catalyst, which is characterized by comprising the following steps of (1) selecting ceramic filter bulbs to serve as a carrier, washing through deionized water, soaking for 24h by using diluted hydrochloric acid, and washing through the deionized water to effluent neuter for stoving; (2) dipping for 24h in nickel nitrate solution with the concentration of 0.1-1.0mol / L and drying; (3) roasting for 5h in a muffle furnace at 500 DEG C to obtain roasting objects; and (4) washing through the deionized water and stoving to obtain the load-type metallic oxide ozone catalytic oxidation catalyst. The preparation method is simple, low in cost, capable of greatly improving oxidation rate and efficiency of ozone on organic pollutant, good in product stability and capable of repeatedly using, and having important significant on application and dissemination of catalytic ozonation techniques.

Description

technical field [0001] The invention relates to a catalytic ozone oxidation catalyst, in particular to a preparation method of a supported metal oxide ozone catalytic oxidation catalyst, which refers to the preparation of a supported catalyst with ordinary ceramic filter balls as the carrier and nickel oxide as the active component method. Background technique [0002] With the rapid development of industry and agriculture in our country, the production and use of various chemical substances are increasing day by day, a large amount of waste water containing refractory toxic and harmful organic substances is discharged into water bodies, causing aggravated pollution of natural water bodies, seriously threatening the health of residents, and restricting economic, social and technological development. [0003] For organic pollutants with high chemical stability, toxic and difficult to biodegrade in water, oxidation technology is usually used to treat them. Ozone is a very st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755C02F1/78C02F101/38
Inventor 张高科刘亚坤
Owner WUHAN UNIV OF TECH
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