Ozone catalytic oxidation catalyst and preparation method thereof

An ozone catalytic oxidation and catalyst technology, applied in the chemical industry, can solve the problems of easy loss of active metals, low loading of active components, and poor uniform dispersion.

Active Publication Date: 2020-07-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Aiming at the deficiencies in the prior art, the present invention provides an ozone catalytic oxidation catalyst and its preparation method. The catalyst preparation method is to introduce active metal components and additives in the petroleum coke activation process, and use the activator to enter the petroleum coke. The diffusion path generated by the coke phase, and under the action of microwave catalysis, combines with amorphous carbon defects or graphitic carbon sheets to form a highly dispersed and stable structure, which solves the problem of active groups in the catalyst process with activated carbon as the carrier. Low sub-loading capacity, poor uniform dispersion, easy loss of active metals and other problems, the active components of the catalyst prepared by the method of the present invention are highly dispersed in the carrier, and the activity and stability of the catalyst are greatly improved

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  • Ozone catalytic oxidation catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Weigh 50g of ammonium phosphate, dissolve it in 200mL of deionized water to obtain solution A; grind 100g of petroleum coke into powder, then add it to solution A, let it stand for 1.5h, then filter, and put the obtained solid sample in an oven at 110°C Dry for 5h. At 200°C, pretreat the dried solid sample with water vapor for 3 hours (the volumetric space velocity of the water vapor gas is 1200 hours -1 ), then raise the temperature to 400°C, continue pretreatment for 3h, and then cool to 60°C under nitrogen protection to obtain pretreated petroleum coke.

[0057] Grind the above-mentioned petroleum coke to powder, then mix it evenly with 6.68g cerium nitrate and 200g potassium hydroxide, place it in a microwave heating furnace with a microwave frequency of 2450MHz, vacuumize it, and heat up to Activation at 600°C for 40 minutes.

[0058] Grind the above-mentioned activated sample into powder, weigh it, mix it with deionized water at a mass ratio of 1:15, stir thorou...

Embodiment 2

[0062] Weigh 50g of ammonium phosphate, dissolve it in 200mL of deionized water to obtain solution A; grind 100g of petroleum coke into powder, then add it to solution A, let it stand for 1.5h, then filter, and put the obtained solid sample in an oven at 110°C Dry for 5h. At 200°C, pretreat the dried solid sample with water vapor for 3 hours (the volumetric space velocity of the water vapor gas is 800 hours -1 ), then raise the temperature to 400°C, continue pretreatment for 3h, and then cool to 60°C under nitrogen protection to obtain pretreated petroleum coke.

[0063] Grind the above-mentioned petroleum coke to powder, then mix it evenly with 6.68g cerium nitrate and 200g potassium hydroxide, place it in a microwave heating furnace with a microwave frequency of 2450MHz, vacuumize it, and heat up to Activation at 600°C for 40 minutes.

[0064] Grind the above-mentioned activated sample into powder, weigh it, mix it with deionized water at a mass ratio of 1:15, stir thoroug...

Embodiment 3

[0068] Weigh 50g of ammonium dihydrogen phosphate, dissolve it in 200mL of deionized water to obtain solution A; grind 100g of petroleum coke to powder, then add it to solution A, leave it for 1.5h, then filter, and put the obtained solid sample in an oven at 110 Dry at ℃ for 5h. At 200°C, pretreat the dried solid sample with water vapor for 3 hours (the volumetric space velocity of the water vapor gas is 500 hours -1 ), then raise the temperature to 400°C, continue pretreatment for 3h, and then cool to 60°C under nitrogen protection to obtain pretreated petroleum coke.

[0069] Grind the above-mentioned petroleum coke to powder, then mix it evenly with 6.68g cerium nitrate and 200g potassium hydroxide, place it in a microwave heating furnace with a microwave frequency of 2450MHz, vacuumize it, and heat up to Activation at 600°C for 40 minutes.

[0070] Grind the above-mentioned activated sample into powder, weigh it, mix it with deionized water at a mass ratio of 1:15, stir...

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Abstract

The invention discloses an ozone catalytic oxidation catalyst and a preparation method thereof, the catalyst comprises an active component, an auxiliary agent and a carrier; the active component is one or more of Mn, Ni, Fe, V, Cu and Co, the auxiliary agent is one or more of Ti, Zn and Ce, and the carrier is petroleum coke-based activated carbon. The preparation method comprises the following steps: (1) pretreating petroleum coke; (2) uniformly mixing the obtained petroleum coke, an auxiliary component-containing compound and an activating agent, and activating; (3) washing and drying a sample obtained after activation, mixing the sample with an active metal-containing compound and an activating agent, and activating after uniform mixing; and (4) washing the obtained sample, treating thewashed sample with a hydrogen peroxide solution, and drying to obtain the catalyst. The active components of the catalyst prepared by the method are highly dispersed in the carrier, and the activity and stability of the catalyst are greatly improved.

Description

technical field [0001] The invention belongs to the field of chemical industry, and relates to a catalytic material and a preparation method thereof, in particular to a metal-loaded activated carbon catalyst for treating waste water and a preparation method thereof. Background technique [0002] Phenol-containing wastewater is widely sourced from petrochemical, synthetic fiber, pharmaceutical and other industries. It is a type of organic wastewater with high toxicity and is difficult to biodegrade. The traditional biochemical method has the disadvantages of long treatment time and low treatment efficiency, which is difficult to meet the production needs of enterprises. . Among the treatment methods of phenol-containing wastewater, a large number of treatment methods such as adsorption and catalytic oxidation have been reported. With the increasingly stringent global environmental protection regulations, the control indicators for sewage discharge standards are getting highe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/34B01J23/83B01J23/22B01J35/10C02F1/72C02F1/78
CPCB01J23/34B01J23/83B01J23/22B01J23/002B01J35/1023B01J35/1028C02F1/725C02F1/78Y02W10/37
Inventor 宋永一孙晓丹张舒冬张庆军刘继华方向晨
Owner CHINA PETROLEUM & CHEM CORP
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