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Activated charcoal carried copper oxide catalyst and process for preparing same

A technology of activated carbon and copper oxide, applied in the direction of physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, etc., can solve problems such as application limitations and high prices, and achieve easy operation, Low price, high COD removal effect

Inactive Publication Date: 2006-12-13
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, a variety of transition metal oxides are considered to have catalytic activity for wet oxidation. The noble metal series catalysts mentioned by Dalian Institute of Chemical Physics (Water Treatment Technology 23 (1997, 2) 83-87) have high activity and long life. But it is expensive, so its application is greatly limited

Method used

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  • Activated charcoal carried copper oxide catalyst and process for preparing same
  • Activated charcoal carried copper oxide catalyst and process for preparing same

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Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0017] Implementation method one, the steps of the preparation method of the activated carbon-supported copper oxide catalyst loaded with CuO 1.0%:

[0018] (1) 50 g of activated carbon was impregnated with 300 mL of 10% NaOH solution for 24 hours, filtered, and washed with deionized water until neutral;

[0019] (2) The activated carbon treated in step (1) was treated with 300mL 10%HNO 3 The solution was soaked for 24 hours, then filtered, washed with deionized water until neutral, placed in an oven, and dried at 100°C;

[0020] (3) Prepare 0.2mol / L Cu(NO 3 ) 2 Solution 200mL, in the solution, add 30g of active carbon treated with step (1), step (2) and stir fully, add dropwise 20% NaHCO 3 Precipitating agent until a large amount of precipitation occurs, aging for 24 hours, filtering, washing with deionized water until no metal ions are precipitated, and drying in an oven at 100°C to obtain a solid copper oxide supported on activated carbon.

[0021] (4) The activated car...

Embodiment approach 2

[0022] Implementation method two, the steps of the preparation method of the activated carbon-supported copper oxide catalyst loaded with CuO 5.0%:

[0023] Steps (1), (2) are the same as the implementation method one;

[0024] (3) Prepare 0.3mol / L Cu(NO 3 ) 2 Solution 200mL, in the solution, add 30g of active carbon treated with step (1), step (2) and stir fully, add dropwise 20% NaHCO 3 Precipitant until a large amount of precipitation occurs, mature for 24 hours, filter, wash with deionized water until no metal ions are precipitated, put it in an oven and dry at 110°C to obtain a solid copper oxide supported on activated carbon.

[0025] (4) Activate the activated carbon-supported copper oxide solid obtained in step (3) at 280° C. for 2.5 h to prepare an activated carbon-supported copper oxide catalyst with 5.0% CuO loaded.

Embodiment approach 3

[0026] Implementation method three, preparation method of activated carbon-supported copper oxide catalyst loaded with CuO 1.0%

[0027] Steps (1), (2), (3) are the same as the implementation method one;

[0028] (4) The activated carbon-supported copper oxide solid obtained in step (3) was activated at 270° C. for 2.5 h to prepare an activated carbon-supported copper oxide catalyst containing CuO 1.0%.

[0029] The method for treating coking wastewater with activated carbon-supported copper oxide catalytic oxidation of the present invention:

[0030] Take 100mL of coking wastewater and put it into a 250mL Erlenmeyer flask, add 1.5g of the prepared CuO 1.0% activated carbon-supported copper oxide catalyst, and then add 0.5-1.0mL of 30% H 2 o 2 , react at 35-40°C for 25-30 minutes, filter, and the filtrate is the treated wastewater.

[0031] The present invention's activated carbon-carrying copper oxide catalyst treats the Anshan Iron and Steel Works coking wastewater with a...

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Abstract

The related preparation method for a CuO catalyst contained 1.0-5.0% active carbon carrier comprises: dipping the active carbon in 10% NaOH solution / HNO3 solution for 24h to filter and clean with deionized water till neutrality in turns, drying in oven at 100-110Deg, adding 0.2-0.3mol / L Cu(NO3)2 solution to stir and drop 20% NaHCO3 till much deposition, slaking 24h, filtering, cleaning with deionized water till no separation of metal ion, drying in oven at 100-110Deg, and activating the obtained solid for 2.5h at 270-280Deg.

Description

technical field [0001] The invention relates to a catalyst and a preparation method thereof. The catalyst is suitable for coking wastewater treatment. Background technique [0002] The coking process of the iron and steel industry uses coal as raw material, and the coal is heated to 960-1000°C under the condition of isolation of air to obtain coke and some chemical products. At the same time, a large amount of aromatic organic compounds, heterocyclic and polycyclic compounds that are difficult to biodegrade are produced in the production process, and the content of phenol is high. If these pollutants are discharged with wastewater without treatment or improper treatment, they will cause serious pollution to water bodies. There is no ideal treatment method for coking wastewater at home and abroad. [0003] At present, the methods for treating coking wastewater with solid catalysts mainly include catalytic wet oxidation and photocatalytic oxidation. Catalytic wet oxidation i...

Claims

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Application Information

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IPC IPC(8): B01J23/72B01J21/18C02F1/72
Inventor 许韵华杨玉国晋丽叶程志明
Owner BEIJING JIAOTONG UNIV
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