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Catalyst for removing formaldehyde and tvoc at room temperature and preparation method thereof

A catalyst, room temperature technology, used in the field of air purification, can solve the problems of low catalytic efficiency and difficult preparation of carriers, and achieve the effects of large specific surface area, good stability and high cohesion

Inactive Publication Date: 2020-05-01
科比环保科技(天津自贸试验区)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the existing process of removing formaldehyde and TVOC at room temperature, there are problems of low catalytic efficiency or relatively difficult preparation of the carrier.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) The preparation method of kaolin and activated carbon composite material carrier:

[0019] Preparation of soybean activated carbon: crush soybean particles to pass through a 20-mesh sieve, then add zinc chloride with a concentration of 40%, impregnate at a solid-to-liquid ratio of 1:3, transfer to an oven after impregnation for 10 hours, and dry at 100°C for 3 hours. Then transfer to a muffle furnace and raise it to 350°C at a rate of 10°C / min and keep it for 1h, then raise it to 600°C at a rate of 10°C / min and keep it for 1h. After the activation process is completed, wash the sample with distilled water until neutral , and then put it in an oven to dry at 100°C for 2 hours, take out the sample and cool it to room temperature to obtain soybean activated carbon;

[0020] Preparation of kaolin and activated carbon composite carrier: Take 8g of kaolin and 12g of soybean activated carbon, add 30g of distilled water and 5g of carboxymethyl cellulose, stir and mix evenly...

Embodiment 2

[0023] The preparation method of embodiment 2 is the same as that of embodiment 1, the only difference is that in the step of loading the active components, 0.2g of silane coupling agent is added, and 0.15g of silver nitrate is added to obtain the required catalyst, and the number is CAT2 .

Embodiment 3

[0025] The preparation method of embodiment 3 is the same as that of embodiment 1, and the only difference is that in the step of loading the active components, 0.2g of silane coupling agent is added, and 5ml of 0.01mol / L chloroplatinic acid solution is added to obtain the required Catalyst, number CAT3.

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PUM

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Abstract

The invention belongs to the field of air purifying, and particularly relates to a catalyst for removing formaldehyde and TVOC (total volatile organic compound) at room temperature and a preparation method thereof. The catalyst for removing formaldehyde and TVOC at room temperature is characterized in that Ag (silver) and Pt (platinum) are used as active components; composite material of kaolin and activated carbon is coupled by a coupling agent to form coupled modifying material, and the coupled modifying material is used as a carrier; the mass content of kaolin accounts for 40 to 60% of the composite material; the mass content of activated carbon accounts for 40 to 60% of the composite material; the mass content of activated components accounts for 0.1 to 1% of the total mass of the catalyst. The catalyst has the advantages that after massive experiment exploring, the coupled modifying material coupled by the composite material of soybean activated carbon and kaolin is used as the carrier, the Ag and the Pt are used as the active materials, and the adsorbing effect is good.

Description

technical field [0001] The invention belongs to the field of air purification, and in particular relates to a catalyst for removing formaldehyde and TVOC at room temperature and a preparation method thereof. Background technique [0002] Indoor polluting gases mainly include formaldehyde and TVOC, which are mainly released by interior decoration and furniture. According to surveys, formaldehyde and TVOC in indoor air in my country generally exceed the standard, especially newly decorated houses, which have been in an environment where formaldehyde and TVOC exceed the standard for a long time It will cause serious injury to human body. Formaldehyde is irritating to human skin, eyes, nasal cavity and mucous membranes of the respiratory tract, and even causes cancer; TVOC is a total volatile organic compound, including benzene, toluene, xylene, esters, chlorinated hydrocarbons, etc. Chronic injury that severely damages the liver, kidneys, nervous tissue and immune system. Ther...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/50B01J23/42B01J37/18B01J37/08B01J37/02B01D53/86B01D53/72
CPCB01D53/72B01D53/8668B01D2257/708B01D2258/06B01J23/42B01J23/50B01J37/0201B01J37/0207B01J37/088B01J37/18
Inventor 陶正勇
Owner 科比环保科技(天津自贸试验区)有限公司
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