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Preparation method of efficient water-resistant copper-doped manganese-based catalyst and application thereof in low-concentration ozone decomposition

A technology of ozone decomposition and catalyst, which is applied in the direction of catalyst activation/preparation, physical/chemical process catalyst, metal/metal oxide/metal hydroxide catalyst, etc., which can solve the limitation of wide application of ozone decomposition catalyst and low efficiency of ozone decomposition , complex preparation process and other issues, to achieve good catalytic ozone degradation effect, wide application range, and simple preparation process

Inactive Publication Date: 2019-02-01
广东科之源环保科技设备有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing commonly used ozonolysis catalysts often have problems such as complex preparation process, high cost, poor moisture resistance, and low ozonolysis efficiency, which limits the wide application of ozonolysis catalysts.

Method used

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  • Preparation method of efficient water-resistant copper-doped manganese-based catalyst and application thereof in low-concentration ozone decomposition
  • Preparation method of efficient water-resistant copper-doped manganese-based catalyst and application thereof in low-concentration ozone decomposition
  • Preparation method of efficient water-resistant copper-doped manganese-based catalyst and application thereof in low-concentration ozone decomposition

Examples

Experimental program
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Effect test

Embodiment 1

[0020] Dissolve 0.474g of potassium permanganate in 15mL of deionized water and stir for 30min to form homogeneous phase A. Dissolve 1.104 g of manganese acetate in 15 mL of deionized water and stir for 30 min to form a homogeneous phase B. Then mix liquid A and liquid B evenly under continuous stirring, then add 0.0096g of copper nitrate solid to the uniformly mixed solution, transfer it to a 150mL hydrothermal reaction kettle after ultrasonic dissolution, and adjust the temperature to 140°C for 2 hours , naturally cooled after the reaction. The precipitate was obtained by centrifugation, washed several times with deionized water and dried overnight. Then put the catalyst material in 2mol / L hydrochloric acid for acid treatment for 15min, and dry it for later use. Add 1ml of PTFE emulsion (60%) to deionized water at a ratio of 1:30, then add 200mg of the above-mentioned catalyst powder to the diluted emulsion, and stir ultrasonically for 30min to obtain an impregnation solut...

Embodiment 2

[0022] Dissolve 1.58g of potassium permanganate in 50mL of deionized water and stir for 30min to form homogeneous phase A. Dissolve 3.68g of manganese acetate in 50mL of deionized water and stir for 30min to form a homogeneous phase B. Then mix liquid A and liquid B evenly under continuous stirring, then add 0.032g of copper nitrate solid to the uniformly mixed solution, transfer it to a 150mL hydrothermal reaction kettle after ultrasonic dissolution, and adjust the temperature to 140°C for 2 hours , naturally cooled after the reaction. The precipitate was obtained by centrifugation, washed several times with deionized water and dried overnight. Then the catalyst material was placed in 5mol / L hydrochloric acid for acid treatment for 15min, and dried for later use. Add 1ml of PTFE emulsion (60%) to deionized water at a ratio of 1:30, then add 200mg of the above-mentioned catalyst powder to the diluted emulsion, and stir ultrasonically for 30min to obtain an impregnation solut...

Embodiment 3

[0024] Dissolve 1.58g of potassium permanganate in 50mL of deionized water and stir for 30min to form homogeneous phase A. Dissolve 3.68g of manganese acetate in 50mL of deionized water and stir for 30min to form a homogeneous phase B. Then mix liquid A and liquid B evenly under continuous stirring, then add 0.032g of copper nitrate solid to the uniformly mixed solution, transfer it to a 150mL hydrothermal reaction kettle after ultrasonic dissolution, and adjust the temperature to 160°C for 4 hours , naturally cooled after the reaction. The precipitate was obtained by centrifugation, washed several times with deionized water and dried overnight. Then put the catalyst material in 2mol / L hydrochloric acid for acid treatment for 30min, and dry it for later use. Add 1ml of PTFE emulsion (60%) to deionized water at a ratio of 1:30, then add 200mg of the above-mentioned catalyst powder to the diluted emulsion, and stir ultrasonically for 30min to obtain an impregnation solution. ...

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Abstract

The invention discloses a preparation of an efficient water-resistant copper-doped manganese-based catalyst and an application thereof in low-concentration ozone decomposition. The efficient water-resistant ozonolysis catalyst of the invention uses manganese and copper as active components, and the preparation method thereof is a hydrothermal method. The preparation process is characterized by dissolving a certain amount of potassium permanganate and manganese acetate in deionized water to form a uniform solution; slowly adding a manganese acetate solution to a potassium permanganate solution,and uniformly stirring the materials to form a uniform solution; adding copper nitrate solid to the above uniform solution, and the uniformly stirring the materials by ultrasonication, transferring the solution to a hydrothermal reaction vessel, adjusting the temperature to 140 DEG C for 2 hours, after the reaction, naturally cooling a mixture, and performing steps of centrifugation washing and acid treatment and drying to obtain the final material. The preparation method of the invention is simple and the material is easy to obtain. At the same time, the catalyst has excellent water resistance, which solves the problem that the catalyst is not water resistant, can adapt to various industrial production environments, and has good market application prospects.

Description

technical field [0001] The invention belongs to the technical field of ozone purification catalysts, and more specifically relates to a high-efficiency water-resistant ozone decomposition catalyst and its treatment method in low-concentration ozone. Background technique [0002] Ozone in the near-surface atmospheric environment is mainly a secondary pollutant produced by volatile organic compounds and nitrogen oxides under light. According to the requirements of the "Guangdong Provincial Department of Environmental Protection's Implementation Plan for Comprehensive Control of Volatile Organic Compounds in Key Industries (2014-2017)" (Yuehuan [2014] No. 130) and other documents, the low-concentration ozone produced by VOCs treatment facilities began To regulate. In addition, in daily life, printers, copiers, ultraviolet lamps and various household appliances that people come into contact with will release a small amount of ozone into the surrounding environment when they are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/889B01J31/32B01J37/10B01D53/86B01D53/66
CPCB01D53/8675B01D2257/106B01J23/002B01J23/8892B01J31/32B01J37/10Y02A50/20
Inventor 陶进平王克亮袁地长涂舜恒
Owner 广东科之源环保科技设备有限公司
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