Preparation method of formaldehyde purifying material

A formaldehyde purification and organic solvent technology, applied in chemical instruments and methods, separation methods, other chemical processes, etc., can solve the problems of complex extraction process, complex production process, and large consumption of chemical reagents, and achieve excellent specific surface area and reduce surface area. Tension, improve the effect of interface fastness

Active Publication Date: 2019-03-22
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method can improve the efficiency of formaldehyde purification, its disadvantages are that the extraction process of its raw material pig small intestine and Coprinus comatus biological stock solution is complicated, and the cost of rose essential oil is high, making it difficult to popularize and use
Although this method does have the effect of improving the purification of formaldehyde, its production process is complicated and consumes a large amount of chemical reagents, which is not conducive to the promotion of the industrial field

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0027] A preparation method of formaldehyde purification material, the specific steps of the preparation process are as follows:

[0028] a Prepare washing liquid

[0029] Mix the alcoholic organic solvent and water, stir evenly, and configure it into a washing liquid. The bath ratio of the washing liquid is 1:40~1:50, and the volume ratio of the alcohol organic solvent to water in the washing liquid is 10%:90 %~25%: 75%, stirring speed 100~250r / min, stirring time 15~30min. The alcoholic organic solvent is ethanol or isopropanol.

[0030] b Pretreatment of juncor fiber

[0031] The rush fiber is immersed in the washing liquid prepared in step a, and dried after mechanical stirring. The stirring speed is 100~250r / min, the stirring time is 15~20min, and the drying temperature is 30℃~60℃. Drying time is 20min~40min.

[0032] c Preparation of activated carbon dispersion

[0033] Place the activated carbon in a solution mixed with organic solvent and water, stir evenly and prepare activate...

Embodiment 1

[0037] According to the above process steps: mix 2mL ethanol and 18mL water, stir at 100r / min for 30min, then put 0.5g rush in the washing liquid for washing, stir at 100r / min for 30min, and dry at 30℃ for 40min to obtain washed rush , Put 0.1g 10 mesh activated carbon into 89.91g water and 9.99gN,N-dimethylacetamide mixed solution, 20℃, 100r / min stirring for 60min to obtain activated carbon dispersion, the washed rush fiber is placed on the activated carbon dispersion The activated carbon modified rush fiber is obtained by immersing in ultrasonic at 20°C and 20kHz for 1 hour and baking at 30°C for 6 hours.

Embodiment 2

[0039] According to the above process steps: mix 5mL ethanol and 15mL water, stir at 150r / min for 25min, then put 0.5g rush in the washing liquid for washing, stir at 150r / min for 25min, and bake at 40℃ for 35min to obtain washed rush , Put 10g 10 mesh activated carbon into 45g water and 45gN,N-dimethylacetamide mixture, 25℃, 200r / min stirring for 50min to obtain activated carbon dispersion, put the washed rush fiber in the activated carbon dispersion, The activated carbon modified rush fiber is obtained by immersing in 25°C, 20kHz ultrasonic for 1 hour and baking at 40°C for 5 hours.

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Abstract

The invention relates to a preparation method of a formaldehyde purifying material, and belongs to the technical field of preparation of a composite material. The preparation method comprises the following steps: carrying out modification treatment on rush fiber by adopting activated carbon, and carrying out immersion treatment on washed rush fiber by using an activated carbon dispersion system formed by mixing an organic solvent and the activated carbon, thus obtaining modified rush fiber. According to the preparation method disclosed by the invention, the activated carbon is adsorbed by utilizing a three-dimensional meshy pore structure of rush, the loading capacity of the rush fiber on the activated carbon is increased, and the problem of long purification time of traditional activatedcarbon is effectively improved by combining high adsorption capacity of the rush. The rush fiber modified by the activated carbon is simple in production technology and short in production process, pollution to the environment is reduced, safety, energy saving, economy and environment protection are realized, and remarkable social and economic benefits are obtained.

Description

Technical field [0001] The invention relates to a preparation method of formaldehyde purification material, belonging to the technical field of composite material preparation. Background technique [0002] With the improvement of living standards, a large amount of building materials are invested in indoor decoration, which produces a series of volatile organic gases, which seriously harm indoor air quality. As a typical volatile organic gas, formaldehyde not only damages the environment, but can also cause cancer after being ingested excessively by the human body. Acute formaldehyde poisoning can cause tears, coughing, breathing difficulties and even death. Chronic poisoning can cause weakness, headaches, reduced immunity, memory loss, various tumors, and chronic diseases, which seriously affect the safety of humans and other organisms. Therefore, the treatment of formaldehyde has received widespread attention. [0003] The adsorption method is a typical technology of formaldehy...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/30B01D53/02
CPCB01D53/02B01D2257/70B01J20/20B01J20/24
Inventor 徐卫林周思婕夏良君付专刘斯年
Owner WUHAN TEXTILE UNIV
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