Formaldehyde scavenging agent as well as preparation method and application thereof
A formaldehyde scavenger and reducing agent technology, applied in separation methods, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of lack of evaluation of formaldehyde degradation products, toxic and harmful, irritating formic acid, etc., and achieve improved degradation and removal. ability, high degradability, the effect of enhancing dispersibility
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Embodiment 1
[0030] Embodiment 1 A kind of preparation of formaldehyde scavenger
[0031] Disperse 100g of activated diatomite, 5g of urea and 20g of cerium nitrate hexahydrate in 1000g of water, and stir at a stirring speed of 500r / min for 1 hour to form a uniform suspension I; put 100g of 0.6mol / L aqueous ammonia solution in a constant pressure funnel It was added dropwise to the suspension I stirred at a stirring rate of 500 r / min at a rate of 20 g / min, and the reaction was continued for 2 h, suction filtered, washed three times with ethanol and water, and the filter cake was transferred to a constant temperature oven at 80 ° C. Dry for 3 hours to obtain a dry filter cake; calcine the dry filter cake in a 600°C muffle furnace for 2 hours, cool naturally, pulverize the calcined filter cake, pass through a 500-mesh sieve, and collect the powder under the sieve to obtain ceria / silicon Diatomaceous earth composite powder;
[0032] Disperse 10g of ceria / activated diatomite composite materia...
Embodiment 2
[0034] The preparation of a kind of formaldehyde scavenger of embodiment 2
[0035] Disperse 100 g of activated diatomite, 5 g of dicyandiamide, and 20 g of cerium nitrate hexahydrate in 1000 g of water, and stir at a stirring speed of 500 r / min for 1 h to form a uniform suspension I; The pressure funnel was added dropwise to the suspension I stirred at a stirring rate of 500 r / min at a rate of 20 g / min, and the reaction was continued for 2 h, suction filtered, washed three times with ethanol and water, and the filter cake was transferred to a constant temperature oven at Dry at 80°C for 3 hours to obtain a dry filter cake; calcinate the dry filter cake in a 600°C muffle furnace for 2 hours, cool naturally, pulverize the calcined filter cake, pass through a 500-mesh sieve, and collect the powder under the sieve to obtain ceria / Activated diatomite composite powder;
[0036] Disperse 10g of ceria / activated diatomite composite material powder in 100g of water under ultrasonic p...
Embodiment 3
[0038] The preparation of embodiment 3 a kind of formaldehyde scavenger
[0039] Disperse 100g of activated diatomite, 5g of glycine, and 20g of cerium nitrate hexahydrate in 1000g of water, and stir at a stirring speed of 500r / min for 1 hour to form a uniform suspension I; put 100g of 0.6mol / L ammonia water solution in a constant pressure funnel It was added dropwise to the suspension I stirred at a stirring rate of 500 r / min at a rate of 20 g / min, and the reaction was continued for 2 h, suction filtered, washed three times with ethanol and water, and the filter cake was transferred to a constant temperature oven at 80 ° C. Dry for 3 hours to obtain a dry filter cake; calcine the dry filter cake in a 600°C muffle furnace for 2 hours, cool naturally, pulverize the calcined filter cake, pass through a 500-mesh sieve, and collect the powder under the sieve to obtain ceria / activated Diatomite composite powder;
[0040] Disperse 10g of ceria / activated diatomite composite material...
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Abstract
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