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Ozone decomposition catalyst and preparation method thereof

A technology of ozone decomposition and catalyst, which is applied in the direction of catalyst activation/preparation, separation methods, chemical instruments and methods, etc. It can solve the problems of poor moisture resistance, short service life, and unstable performance, etc., and achieve strong moisture resistance and use The effect of long life and stable performance

Inactive Publication Date: 2017-12-12
深圳市高斯宝电气技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Chinese patent CN90106857 uses manganese and copper oxides as active components to decompose ozone. CN1259398A, CN17167674A and CN1357348A all use oxides of manganese, copper, nickel and cobalt as active components, which are loaded on activated carbon to decompose ozone. CN1785507A uses various A kind of manganese oxide is used as catalyst to decompose ozone at normal temperature and obtain better effect, but the performance of the ozonolysis catalyst prepared by the prior art is not stable enough, the service life is short, and the moisture resistance is relatively poor.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Prepare a potassium permanganate solution with a concentration of 0.01mol / L, take 116ml of a potassium permanganate solution with a concentration of 0.01mol / L and add it to 10L of deionized water, and adjust the pH value to 11.5;

[0025] Prepare a manganese sulfate solution with a concentration of 0.01mol / L, and add 175ml of a manganese sulfate solution with a concentration of 0.01mol / L under vigorous stirring into the above-mentioned potassium permanganate solution that has been mixed uniformly to form a sol;

[0026] Put 20g of granular activated carbon with a diameter of about 3mm and a bulk density of 0.5g / ml into the sol, stir slowly until the supernatant becomes colorless, pour off the supernatant, and dry at 100°C for 24 hours to obtain a well-loaded Granular manganese activated carbon catalyst.

[0027] Prepare a ferric chloride solution with a concentration of 0.072mol / L, and add the prepared ferric chloride solution to the above-mentioned manganese activated ...

Embodiment 2

[0030] Prepare a potassium permanganate solution with a concentration of 0.01mol / L, take 73ml of a potassium permanganate solution with a concentration of 0.01mol / L and add it to 10L of deionized water, and adjust the pH value to 11.5;

[0031] Prepare a manganese sulfate solution with a concentration of 0.01mol / L, and add 109ml of manganese sulfate solution with a concentration of 0.01mol / L under vigorous stirring to the above-mentioned potassium permanganate solution that has been mixed uniformly to form a sol;

[0032] Put 20g of granular activated carbon with a diameter of about 3mm and a bulk density of 0.5g / ml into the sol, stir slowly until the supernatant becomes colorless, pour off the supernatant, and dry at 100°C for 24 hours to obtain a well-loaded Granular manganese activated carbon catalyst.

[0033] Prepare a ruthenium trichloride solution with a concentration of 0.046mol / L, add the prepared ruthenium trichloride solution to the above-mentioned manganese activat...

Embodiment 3

[0036] Prepare a manganese acetate solution with a concentration of 0.046mol / L, and add the manganese acetate solution to 20g of granular activated carbon with a diameter of about 3mm and a bulk density of 0.5g / ml until the liquid surface is immersed in the activated carbon;

[0037] After ultrasonic homogenization, it was left to stand for 24 hours, then dried at 105°C for 24 hours, and then calcined at 300°C for 3 hours to obtain a manganese activated carbon catalyst.

[0038] Preparation concentration is the copper acetate solution of 0.09mol / L, adds the prepared copper acetate solution in the above-mentioned manganese activated carbon catalyst, until the liquid level just immerses the above-mentioned manganese activated carbon catalyst;

[0039] After ultrasonic uniformity, let stand for 24 hours, dry and dry at 105°C for 24 hours, and calcined at 300°C for 3 hours to obtain a manganese-copper activated carbon composite catalyst, in which the manganese and copper loadings a...

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PUM

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Abstract

The invention discloses an ozone decomposition catalyst and a preparation method thereof. The ozone decomposition catalyst comprises a carrier and an active component, wherein the carrier is active carbon particles and the active component is manganese-copper compound oxide, manganese-iron compound oxide or manganese-ruthenium compound oxide; the mass ratio of manganese to copper, the manganese to iron or the manganese to ruthenium ranges from (1 to 10) to (10 to 1). The preparation method comprises the following steps: preparing a manganese active carbon catalyst; preparing a ferric trichloride solution, a copper acetate solution or a ruthenium trichloride solution; immersing the manganese active carbon catalyst into the ferric trichloride solution, the copper acetate solution or the ruthenium trichloride solution and standing for half day or longer; drying to obtain a manganese-iron active carbon compound catalyst, a manganese-copper active carbon compound catalyst or a manganese-ruthenium active carbon compound catalyst. The ozone decomposition catalyst and the preparation method thereof, disclosed by the invention, have the advantages of simple and safe technology, high ozone decomposition efficiency of the catalyst, relatively low cost, stable performance and long service life and has a wide application prospect.

Description

[technical field] [0001] The invention relates to a catalyst, in particular to an ozone decomposition catalyst and a preparation method thereof. [Background technique] [0002] Ozone is widely used. Industrial water treatment, flue gas desulfurization, and denitrification tail gas contain a large amount of undecomposed ozone. Ozone will be generated during the work of printers, copiers, and ultraviolet lamps in the disinfection and sterilization of medical and health and catering industries. [0003] Ozone, as a strong oxidizing gas, is inhaled into the body and quickly converted into highly active free radicals - superoxygen (O2*), which can oxidize unsaturated fatty acids, thereby causing cell damage, and can also cause inflammatory lesions of the upper respiratory tract . Prolonged exposure to ozone can also cause neurotoxicity, dizziness, headache, memory loss, vision loss, damage to the human immune system, induce lymphocyte lesions, and accelerate aging. The harm of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/889B01J23/656B01J37/03B01J37/02B01J37/08B01D53/86B01D53/66
CPCB01D53/8675B01J23/002B01J23/6562B01J23/8892B01J37/0201B01J37/036B01J37/08B01J37/082Y02A50/20
Inventor 阮世良王颂吴刚孙晓晨
Owner 深圳市高斯宝电气技术有限公司
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