Catalyst for ozone catalytic oxidation reactions, and preparation method thereof

An ozone catalytic oxidation and catalyst technology, which is applied in the direction of catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve problems such as weakening catalytic performance, avoid secondary pollution, improve utilization efficiency, and improve utilization. rate effect

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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  • Catalyst for ozone catalytic oxidation reactions, and preparation method thereof
  • Catalyst for ozone catalytic oxidation reactions, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Add 50g of activated carbon powder to 200g of magnesium gluconate solution with a mass fraction of 18%, stir slowly, and soak for 4 hours; slowly add 290mL of sodium hydroxide solution with a concentration of 0.6mol / L dropwise under stirring to generate magnesium hydroxide precipitate, Stir, stand still for 2 hours, filter, dry at 80°C for 12h, and bake at 1100°C for 3 hours under nitrogen protection to obtain an activated carbon-magnesia composite. The obtained complex was added to 200 g of distilled water at a temperature of 90 ° C, and CO was introduced after 2 h. 2 Gas, pressure 0.18MPa, temperature 150°C, control the end point pH to 7.5, filter after natural cooling, dry at 70°C for 8 hours, and roast under nitrogen protection at 180°C for 4 hours to obtain a composite carrier material of activated carbon and basic magnesium carbonate. The obtained carrier material was made into a cylindrical shape with a diameter of 2.5 mm, dried at 70° C., and then calcined under...

Embodiment 2

[0055] Add 50g of activated carbon powder to 250g of L-magnesium lactate solution with a mass fraction of 19.2%, stir slowly, and soak for 4 hours; slowly add 270mL of ammonium carbonate solution with a concentration of 0.7mol / L dropwise under stirring to generate magnesium carbonate precipitation, stir, Stand still for 2 hours, filter, dry at 80°C for 12h, and bake at 1100°C for 3 hours under the protection of nitrogen to obtain the activated carbon-magnesia composite. The obtained complex was added to 200 g of distilled water at a temperature of 85 ° C, and CO was introduced after 2 h. 2 Gas, pressure 0.36MPa, temperature 90°C, control the end point pH to 8.0, filter after natural cooling, dry at 70°C for 8 hours, and roast at 200°C for 2 hours under the protection of argon to obtain a composite carrier material of activated carbon and basic magnesium carbonate. The obtained support material was made into a four-leaf clover shape with a diameter of 2.0 mm, dried at 70° C., a...

Embodiment 3

[0057] Add 100g of activated carbon powder to 300g of 10% L-magnesium aspartate solution by mass fraction, stir slowly, and soak for 4 hours; slowly add 210mL of ammonia water with a concentration of 1.0mol / L dropwise under stirring to generate magnesium carbonate precipitation, stir, Stand still for 2 hours, filter, dry at 80°C for 12h, and bake at 1100°C for 3 hours under the protection of nitrogen to obtain the activated carbon-magnesia composite. The obtained complex was added to 200 g of distilled water at a temperature of 90 ° C, and CO was introduced after 1 h. 2 Gas, pressure 0.15MPa, temperature 110°C, control the end point pH to 9.0, filter after natural cooling, dry at 70°C for 8 hours, and roast at 200°C for 2 hours under the protection of argon to obtain a composite carrier material of activated carbon and basic magnesium carbonate. The obtained support material was made into a spherical shape with a diameter of 3.0 mm, dried at 70° C., and then calcined under the...

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Abstract

The invention discloses a catalyst for ozone catalytic oxidation reactions, and a preparation method thereof, wherein the catalyst comprises a composite carrier and an active metal component, a noblemetal is used the active metal component, and the composite carrier comprises active carbon and a basic carbonate. The preparation method comprises: mixing active carbon and a soluble organic 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 on the obtained material B, drying, and calcining to obtain a material C; and mixing the material C and water, carrying out a reaction by introducing carbon dioxide gas, cooling, carrying out solid-liquid separation, dryingthe separated solid phase, calcining to obtain a composite carrier material, impregnating with an active metal and an optional auxiliary agent component, drying, and calcining to obtain the catalyst.According to the present invention, the catalyst has characteristics of simple preparation process, good stability and high COD removal ability, and can alleviate the problem of metal loss.

Description

technical field [0001] The invention relates to a catalytic material and a preparation method thereof, in particular to a catalyst for ozone catalytic oxidation reaction and a preparation method thereof. Background technique [0002] Due to the increasing shortage of water resources, the state has become more stringent on the total discharge of pollutants in water. The formulation of new standards has brought new challenges to the prevention and control of water pollution in my country. Most of the discharged wastewater cannot meet the discharge requirements of the new standards. Therefore, it is necessary to carry out advanced treatment of external sewage to achieve standard discharge and even reuse, which is of great significance in reducing the discharge of waste water pollutants, reducing the sewage charges of enterprises and reducing the consumption of water resources. [0003] A lot of research has been carried out on the treatment of refractory organic polluted wastew...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/236B01J35/10B01J37/04B01J37/08B01J37/18C02F1/78
Inventor 赵越蒋广安李宝忠马传军王雪清
Owner CHINA PETROLEUM & CHEM CORP
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