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Ag-MnO2/AC composite formaldehyde removal material, preparation method thereof, formaldehyde removal module and air purification equipment

A technology of stirring and mixing manganese dioxide, which is applied in the direction of metal/metal oxide/metal hydroxide catalysts, separation methods, and other chemical processes, and can solve the problems that silver, manganese, and activated carbon cannot be combined to form purification and aldehyde-removing materials. , to achieve the effect of overcoming the short life, reducing the risk, and enriching the pore structure

Active Publication Date: 2020-11-13
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main purpose of the present invention is to provide a kind of Ag-MnO 2 / AC composite aldehyde removal material, its preparation method, aldehyde removal module and air purification equipment to solve the problem that silver, manganese and activated carbon cannot be combined to form a purification aldehyde removal material in the prior art

Method used

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preparation example Construction

[0022] In a typical embodiment of the present application, a Ag-MnO 2 / AC composite formaldehyde removal material preparation method, the preparation method includes: step S1, potassium permanganate solution and porous carbon are mixed and continued for the first predetermined time, to obtain the first composite system; step S2, the first composite system with Ag + The solutions are mixed for a second predetermined time to obtain a second composite system; step S3, the second composite system is subjected to solid-liquid separation to obtain a solid isolate and a separated liquid; step S4, the solid isolate is subjected to a temperature of 60-100°C Dry to get Ag-MnO 2 / AC composite aldehyde removal material.

[0023] This application adopts the method of first loading manganese oxide on porous carbon and then loading silver, so that three kinds of aldehyde-removing materials can be effectively combined. Firstly, manganese oxides were supported on porous carbon using potassi...

Embodiment 1

[0043] 1) Select activated carbon with a particle size of 0.2 to 0.6 mm as the carrier, mix 5 mL of the above-mentioned configured potassium permanganate mother solution with 45 mL of deionized water to form a concentration of 0.05 mol / L potassium permanganate solution, and use the high Potassium manganate solution and 1 g of activated carbon were mixed and fully stirred at a stirring speed of 500 r / min and a stirring time of 60 min to obtain the first composite system.

[0044] 2) Take the Ag configured above + Mix 1mL of mother solution and 1mL deionized water to form Ag + The concentration is 0.05mol / L Ag + The solution was added into the first composite system, and the stirring was continued at a stirring rate of 500 r / min for 30 minutes to obtain the second composite system.

[0045] 3) Suction filtration and water washing of the second composite system obtained above to obtain a solid isolate, and then dry the obtained solid isolate in an oven at 80°C for 6 hours to ob...

Embodiment 2

[0047] 1) Select activated carbon with a particle size of 0.2 to 0.6 mm as the carrier, mix 5 mL of the above-mentioned configured potassium permanganate mother solution with 45 mL of deionized water to form a concentration of 0.05 mol / L potassium permanganate solution, and use the high Potassium manganate solution and 1 g of activated carbon were mixed and fully stirred at a stirring rate of 300 r / min and a stirring time of 60 min to obtain the first composite system.

[0048] 2) Take the Ag configured above + Mix 1mL of mother solution and 1mL deionized water to form Ag + The concentration is 0.05mol / L Ag + The solution was added into the first composite system, and the stirring was continued at a stirring rate of 500 r / min for 30 minutes to obtain the second composite system.

[0049] 3) Suction filtration and water washing of the second composite system obtained above to obtain a solid isolate, and then dry the obtained solid isolate in an oven at 80°C for 6 hours to obt...

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Abstract

The invention provides an Ag-MnO2 / AC composite formaldehyde removal material, a preparation method thereof, a formaldehyde removal module and air purification equipment. The preparation method comprises the following steps: S1, mixing a potassium permanganate solution and porous carbon for a first preset time to obtain a first composite system; S2, mixing the first composite system with an Ag < +>-containing solution for a second preset time to obtain a second composite system; S3, carrying out solid-liquid separation on the second composite system to obtain a solid isolate and a separation liquid; and step S4, drying the solid isolate at the temperature of 60-100 DEG C to obtain the Ag-MnO2 / AC composite formaldehyde removal material. A method of loading manganese oxide on porous carbon and then loading silver is adopted so that the three aldehyde removal materials are effectively compounded. The formed formaldehyde removal material utilizes activated carbon to adsorb formaldehyde, manganese oxide and nano-silver to catalyze and oxidize formaldehyde to form carbon dioxide and water so that the service life is prolonged, and the problem of generation of toxic substances is avoided.

Description

technical field [0001] The invention relates to the technical field of aldehyde-removing materials, in particular to an Ag-MnO 2 / AC composite aldehyde removal material, its preparation method, aldehyde removal module and air purification equipment. Background technique [0002] Formaldehyde (HCHO) is a common volatile organic compound in indoor air, which seriously endangers human health. Therefore, the removal and treatment of formaldehyde pollutants in indoor air has very important research significance. The main component used in air purifier filters today is activated carbon. Pure activated carbon filter materials mainly rely on adsorption to remove formaldehyde, and their service life is limited by the amount of adsorption saturation. Moreover, once activated carbon reaches adsorption saturation, toxic substances may be produced, endangering human health. . Studies have shown that formaldehyde can be completely converted into non-toxic and harmless CO through catalyt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/86B01D53/88B01D53/72B01J20/20B01J23/68B01D46/00
CPCB01D53/8668B01D53/885B01J20/20B01J23/688B01D46/0027B01D46/0028B01D46/0036B01D2255/2073B01D2255/104B01D2253/102B01D2258/06
Inventor 金星王贤波刘江王天龙胡康泽
Owner GREE ELECTRIC APPLIANCES INC
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