Polyfunctional formaldehyde adsorption material

A multi-functional group and formaldehyde adsorption technology, which is applied in other chemical processes, chemical instruments and methods, etc., can solve the problems of small formaldehyde adsorption capacity and easy secondary release, and achieve enhanced adsorption efficiency, improved adsorption capacity and reaction speed, overcoming the effect of secondary release

Inactive Publication Date: 2011-06-22
河北亚太环境科技发展股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, activated carbon only has a relatively strong adsorption effect on non-polar or weakly polar substances, while the adsorption capacity for highly polar formaldehyde is very small, and it is easy to be released again when the adsorption is saturated and the temperature is high.

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0019] The small-molecule polyfunctional nitrogen-containing compound is diethylenetriamine hydrochloride, the small-molecule polyol is diethylene glycol, and the porous carrier is spherical 13X molecular sieve.

[0020] Mix 40g of diethylenetriamine hydrochloride with 80g of diethylene glycol, add 400mL of water to dissolve and prepare the impregnation solution. Add the impregnation liquid to 1000 grams of spherical 13X molecular sieves with a diameter of 0.5 mm, and dry at 85° C. for 5 hours.

Embodiment 2

[0022] The nitrogen-containing compound with small molecular multifunctional groups is a mixture of melamine and hydrazine sulfate, the small molecular polyol is glycerol, and the porous carrier is spherical activated alumina with a diameter of 2 mm.

[0023] Mix 80g of melamine and 50g of hydrazine sulfate, add 70g of glycerol and stir evenly, add 400mL of water to dissolve to make an impregnation solution; add the impregnation solution to 1000 grams of spherical activated alumina with a diameter of 2mm, and dry at 55°C for 8 hours.

Embodiment 3

[0025] The nitrogen-containing compound with small molecular multifunctional groups is a mixture of urea and diethylenetriamine hydrochloride, the small molecular polyol is glycerol, and the porous carrier is columnar coal-based activated carbon with a diameter of 1.5 mm.

[0026] Mix 30g of urea with 50g of diethylenetriamine hydrochloride, add 40g of glycerol and stir evenly, add 1000mL of water to dissolve and make an impregnation solution. Add the impregnating solution to 1000 grams of coal-based activated carbon with a diameter of 1.5mm, and dry it at 75°C for 6 hours.

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Abstract

The invention discloses a polyfunctional formaldehyde adsorption material. A polyfunctional nitrogen-containing compound with molecular weight of less than 200 is used as an active ingredient, and a small molecular alcohol substance is used as a synergist; and after the active ingredient and the synergist are mixed in a mass ratio of 1:1-10, the mixture is supported in a porous support. The small molecular polyfunctional nitrogen-containing compound and the small molecular polyalcohol synergist generate a stable three-dimensional netlike structural product by polyfunctional nucleophilic addition reaction, and the three-dimensional netlike structural product is supported on the porous support, so that the adsorption efficiency of the porous support is greatly enhanced, meanwhile, the formaldehyde molecules are locked in the three-dimensional netlike structure, and the defect of secondary release of the porous support is overcome.

Description

technical field [0001] The invention relates to an air purification material, in particular to an adsorption material especially suitable for eliminating formaldehyde. Background technique [0002] Along with the raising of people's living standard, the decoration of living room is more and more luxurious. At the same time, a large number of non-environmentally friendly plywood, wood-based panel furniture, urea-formaldehyde resin adhesives, textile materials, etc. are used in decoration. These materials are easy to release formaldehyde and endanger human health. Especially in summer when the room is relatively airtight, the temperature is high, the release of formaldehyde is accelerated, the indoor air is not circulated, and a large amount of formaldehyde has accumulated. However, the residual formaldehyde inside the plywood is very long, usually more than 5 years before it can be completely released, and some need more than 10 years to be completely released, so long-term ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22
Inventor 王超蔺玉强竺玉发
Owner 河北亚太环境科技发展股份有限公司
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