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
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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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