Ozone Catalyst with Surface Overbased Spherical Activated Carbon and Its Application

A technology of surfactants and catalysts, applied in physical/chemical process catalysts, oxidized water/sewage treatment, chemical instruments and methods, etc., can solve problems such as time-consuming, high preparation costs, and complicated preparation processes, and achieve simple preparation methods , good stability and flexible process

Active Publication Date: 2022-04-29
EAST CHINA UNIV OF SCI & TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] This invention mainly aims at the problems of high preparation cost, complicated preparation process and long time consumption of the existing ozone catalytic oxidation catalyst, and provides a preparation method of surface highly alkaline mesoporous spherical activated carbon

Method used

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  • Ozone Catalyst with Surface Overbased Spherical Activated Carbon and Its Application
  • Ozone Catalyst with Surface Overbased Spherical Activated Carbon and Its Application
  • Ozone Catalyst with Surface Overbased Spherical Activated Carbon and Its Application

Examples

Experimental program
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Effect test

Embodiment 1

[0040] Add 1g of anhydrous aluminum chloride and 1g of sulfur to 100g of petroleum pitch with a softening point of 40°C and 0% toluene insoluble matter. Stir at 250°C for 3 hours under a nitrogen atmosphere. The intermediate pitch is obtained after cooling down. Then pour the intermediate bitumen into a reaction kettle, add 1000ml of water and 2g of sodium alginate, stir at 150°C to suspend into balls. Subsequently, the ball was rapidly heat-treated at 400° C. for 30 min in an air atmosphere to obtain non-melting balls. Then in the activation furnace, under the water vapor atmosphere, at 10-20°C·min -1 The heating rate was increased to 1000 °C and maintained for 1 h. Finally, the mesoporous spherical activated carbon catalyst SC was obtained.

Embodiment 2

[0042] Get the mesoporous spherical activated carbon catalyst 3g among the embodiment 1, add the NaOH solution of 40ml 5mol / L. Stir at a constant temperature of 70°C for 4 hours, adjust the temperature to 35°C and stir for 24 hours. The activated carbon was fished out and washed with distilled water until the pH remained constant. Dry in a vacuum oven for 12 hours to obtain a surface highly basic spherical activated carbon catalyst SC-1.

Embodiment 3

[0044] Get the mesoporous spherical activated carbon catalyst 3g among the embodiment 1, add the NaOH solution of 40ml 10mol / L. Stir at a constant temperature of 70°C for 4 hours, adjust the temperature to 35°C and stir for 24 hours. The activated carbon was fished out and washed with distilled water until the pH remained constant. Dry in a vacuum oven for 12 hours to obtain a surface highly basic spherical activated carbon catalyst SC-2.

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Abstract

The invention provides a surface highly alkaline mesoporous spherical activated carbon, which is prepared by the following method: mix low softening point asphalt with oxidation accelerator and Lewis catalyst, add surfactant and water to suspend into balls, carbonize and activate to obtain mesoporous Spherical activated carbon catalyst, and then put it into lye to fully mix and modify it, make it evenly mixed by changing the gradient temperature, wash until the pH is stable, and then dry it in a vacuum to obtain a highly alkaline mesoporous spherical activated carbon on the surface. The material has high catalytic activity, can significantly improve the efficiency of ozone conversion into hydroxyl radicals, and significantly promote the mineralization of refractory pollutants; it has good stability and can maintain high catalytic activity during long-term use. It can be used for the treatment of organic pollutants, which is beneficial to the adsorption of pollutants and intragranular diffusion and mass transfer, and improves the degradation efficiency.

Description

technical field [0001] The invention relates to a surface highly alkaline spherical activated carbon ozone catalyst and its application. It belongs to the field of environmental engineering and water treatment. Background technique [0002] Degraded organic wastewater refers to wastewater that decomposes slowly or cannot be decomposed by microorganisms, and if it can be decomposed by microorganisms, it cannot be completely decomposed. The common characteristics of these substances are high toxicity, complex components, and high chemical oxygen consumption. Generally, microorganisms have almost no degradation effect on this wastewater. If these substances are discharged indiscriminately without treatment, they will seriously pollute the environment and threaten Human health. Refractory pollutants are easy to accumulate in organisms and become potential sources of pollution in water bodies. At present, the types and discharge of industrial wastewater are increasing, and the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J21/18B01J35/10C02F1/78C02F101/36
CPCB01J21/18B01J35/1004B01J35/1014B01J35/1038C02F1/78C02F2101/36
Inventor 杨雪晶程晨龙东辉袁远平卫皇曌张洪章李剑平李昊东孙承林汪华林
Owner EAST CHINA UNIV OF SCI & TECH
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