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Ozone catalytic oxidation catalyst preparation method

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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  • Ozone catalytic oxidation catalyst preparation method
  • Ozone catalytic oxidation catalyst preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0046] 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. The resulting complex was added with Cu(NO 3 ) 2 ·3H 2 O and La(NO 3 ) 3 ·6H 2 O by CuO and La 2 o 3 In the 1000 mL solution prepared by 5.0% and 1.0% of the total weight of the catalyst, heat the water bath to 90 ° C, quickly add 0.067 moL of phosphoric acid dropwise, then add ammonia water to adjust the pH to 9.5, stir for 2 hours, and stand for 2 hours; Filter, dry at 70°C for 8 hours, and bake at 180°C for 4 hours under the protection of nitrogen to obtain an ozone catalytic oxidation catalyst. The obtai...

Embodiment 2

[0048] 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. The resulting complex was added with Fe(NO 3 ) 3 9H 2 O and Ce(NO 3 ) 3 ·6H 2 O by Fe 2 o 3 and CeO 2 In the solutions made up of 5.0% and 1.5% of the total weight of the catalyst, heat the 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 stand for 2 hours; Filter, dry at 70°C for 8 hours, and bake at 170°C for 4 hours under the protection of helium to obtain an ozone catalytic oxidation catalyst. The obtained catalyst was ma...

Embodiment 3

[0050] 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. The resulting composite was added with Ti(SO 4 ) 2 9H 2 O and Pr(NO 3 ) 3 ·6H 2 O by TiO 2 and Pr 2 o 3 In the solutions made up of 10.0% and 2.0% of the total weight of the catalyst, heat the water bath to 90°C, quickly add 0.051moL of phosphoric acid dropwise, then add potassium hydroxide to adjust the pH to 10.5, stir for 2 hours, and stand for 2 hours; Filter, dry at 70°C for 8 hours, and bake at 150°C for 6 hours under the protection of nitrogen to obtain an ozone catalytic oxidation catalyst. The obtained cataly...

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Abstract

The invention provides an ozone catalytic oxidation catalyst preparation method, wherein the catalyst comprises a composite carrier, an active metal component and an auxiliary agent. The preparation method comprises: mixing active carbon and a soluble organic calcium salt solution, introducing a carbonate solution or an alkaline solution into the obtained material A to obtain a material B after uniformly mixing, carrying out solid-liquid separation to obtain a solid phase, drying, clacining to obtain a material C, mixing the obtained material C and the aqueous solution of a soluble transitionmetal salt and a rare earth metal salt, adding phosphoric acid, adjusting the pH value, carrying out solid-liquid separation, drying, and calcining to obtain the catalyst.

Description

technical field [0001] The invention relates to a catalytic material 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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/18B01J27/185B01J27/187B01J35/10B01J37/02C02F1/72C02F1/78
Inventor 赵越蒋广安李宝忠马传军王雪清
Owner CHINA PETROLEUM & CHEM CORP
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