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Noble metal ozone catalytic oxidation catalyst and preparation method thereof

A technology of ozone catalytic oxidation and catalyst, applied in the direction of catalyst activation/preparation, physical/chemical process catalyst, chemical instrument and method, etc. The effect of secondary pollution

Active Publication Date: 2019-06-21
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The activated carbon in the particles prepared in this way cannot be directly contacted with wastewater, which weakens its catalytic performance.

Method used

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  • Noble metal ozone catalytic oxidation catalyst and preparation method thereof
  • Noble metal ozone catalytic oxidation catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Add 100g of activated carbon powder to 300g of calcium gluconate solution with a mass fraction of 16%, stir slowly, and soak for 4 hours; slowly add 225mL of ammonium carbonate solution with a concentration of 0.5mol / L dropwise under stirring to form a calcium carbonate precipitate, stir, Stand still for 2 hours, filter, dry at 80°C for 12h, and bake at 900°C for 3 hours under the protection of nitrogen to obtain the activated carbon-calcium oxide composite. Add the obtained complex to 200g of distilled water, heat it to 90°C in a water bath, quickly add 0.067moL of phosphoric acid dropwise, then add ammonia water to adjust the pH to 9.5, stir for 2 hours, and let stand for 2 hours; Calcined for 4 hours under the protection of nitrogen to obtain the composite carrier material of activated carbon and basic calcium phosphate. The obtained carrier material was made into a clover shape with a diameter of 1.7 mm, dried at 70° C., and then calcined under the protection of nit...

Embodiment 2

[0054] Add 100g of activated carbon powder to 300g of L-calcium lactate solution with a mass fraction of 16%, stir slowly, and soak for 4 hours; slowly add 200mL of sodium carbonate solution with a concentration of 0.8mol / L dropwise under stirring to form a calcium carbonate precipitate, stir, Stand still for 2 hours, filter, dry at 80°C for 12h, and bake at 1100°C under nitrogen protection for 3 hours to obtain the activated carbon-calcium oxide composite. Add the obtained complex into 200g of distilled water, heat it in a water bath to 90°C, quickly add 0.1moL of phosphoric acid dropwise, then add sodium hydroxide to adjust the pH to 10, stir for 2 hours, and let it stand for 2 hours; filter, dry at 70°C for 8h, and Calcined at 170°C for 4 hours under the protection of helium to obtain the composite carrier material of activated carbon and basic calcium phosphate. The obtained carrier material was made into a clover shape with a diameter of 2.5 mm, dried at 70° C., and then ...

Embodiment 3

[0056] Add 50g of activated carbon powder to 200g of calcium gluconate solution with a mass fraction of 18%, stir slowly, and soak for 4 hours; slowly add 280mL of sodium hydroxide solution with a concentration of 0.6mol / L dropwise under stirring to form calcium hydroxide precipitate, Stir, stand still for 2 hours, filter, dry at 80°C for 12h, and bake at 1100°C under nitrogen protection for 3 hours to obtain the activated carbon-calcium oxide composite. Add the obtained complex to 200g of distilled water, heat it to 90°C in a water bath, quickly add 0.051moL of phosphoric acid dropwise, then add potassium hydroxide to adjust the pH to 10.5, stir for 2 hours, and let stand for 2 hours; filter, dry at 70°C for 8h, and Calcined at 150°C for 6 hours under the protection of nitrogen to obtain a composite carrier material of activated carbon and basic calcium phosphate. The obtained carrier material was made into a cylindrical shape with a diameter of 2.5 mm, dried at 70° C., and t...

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Abstract

The invention provides a noble metal ozone catalytic oxidation catalyst and a preparation method thereof, wherein the catalyst comprises an active metal component and a composite carrier, the active metal component is a noble metal, and the composite carrier comprises active carbon and basic calcium phosphate. The preparation method comprises: preparing a composite carrier, and introducing an active metal component on the composite carrier. According to the present invention, the prepared catalyst has advantages of good stability, high COD removal ability and simple preparation process, and can alleviate the problem of metal loss.

Description

technical field [0001] The invention relates to a catalyst and a preparation method thereof, in particular to an ozone catalytic oxidation catalyst and a preparation method thereof. Background technique [0002] A large amount of organic polluted wastewater caused by industrial production has seriously affected the living conditions of human beings and the ecological environment, and has become an increasingly serious social and economic problem. It is especially difficult to treat organic wastewater that is difficult to biodegrade; Increasingly scarce, the state has become more stringent on the total discharge of pollutants in water, and the formulation of new standards has brought new challenges to the prevention and control of water pollution in my country's refining and chemical enterprises. After the refining and chemical enterprises use the existing secondary biochemical process, the discharge Most of the waste water still cannot meet the discharge requirements of the ne...

Claims

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Application Information

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IPC IPC(8): B01J27/185C02F1/28C02F1/72C02F1/78B01J37/04B01J37/08
Inventor 赵越蒋广安李宝忠马传军王雪清
Owner CHINA PETROLEUM & CHEM CORP
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