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A kind of preparation method of cellulose-based toxic gas adsorption material

An adsorption material and toxic gas technology, which is applied in the field of preparation of cellulose-based toxic gas adsorption materials, can solve the problems of high raw material cost, less research on ion exchange fibers, and difficult degradation, etc., and achieve fast adsorption speed, good chemical stability, The effect of easy desorption

Inactive Publication Date: 2011-12-07
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the preparation methods of ion exchange fibers are basically grafted and modified with synthetic fibers as the matrix raw materials, and there are relatively few studies on ion exchange fibers with natural cellulose as the matrix raw materials.
And artificially synthesized ion-exchange fibers have the advantages of fast adsorption speed, large capacity, simple and convenient regeneration, and good chemical stability, but their raw material costs are high and they are not easy to degrade.

Method used

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  • A kind of preparation method of cellulose-based toxic gas adsorption material
  • A kind of preparation method of cellulose-based toxic gas adsorption material
  • A kind of preparation method of cellulose-based toxic gas adsorption material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Weigh 100g of bagasse cellulose, after being decomposed by a decomposer for 5min, wash with distilled water at a temperature of 25°C, then wash with ethanol with a three-fold volume concentration of 95%, filter and dry, and then soak in 8% NaOH solution for 30h for activation After treatment, filter with suction, wash until the pH value is 7, and dry; add 200 g of water according to the mass ratio of bagasse cellulose to water of 0.5:1, and microwave gelatinization at a power of 300W for 5 minutes; take out the gelatinized product and press bagasse Add 20g of ammonium cerium nitrate initiator at a mass ratio of cellulose to initiator of 5:1, and initiate for 2min at a microwave power of 500W; Ethylenetriamine, mixed evenly, reacted under 100W microwave for 15min, washed with distilled water and dried at 60°C for 10h to obtain 135g of toxic gas adsorption material.

[0053] The applicant measured the zeta potential of the above-mentioned toxic gas adsorption material, an...

Embodiment 2

[0061] Weigh 100g of moso bamboo fiber, after being decomposed by a decomposer for 8min, wash with distilled water at a temperature of 25°C, then wash with 95% ethanol with a triple volume concentration, filter and dry, and then soak in 15% NaOH solution for 15h for activation treatment Finally, filter with suction, wash until the pH value is 7, and dry; add 25 g of water to moisten according to the mass ratio of moso bamboo cellulose to water of 4:1, and microwave gelatinization at a power of 100W for 3 minutes. Take out the gelatinized product and add 10 g of water-soluble V-50 initiator or water-soluble hydrogen peroxide-ferrous salt according to the mass ratio of bamboo cellulose and initiator of 10:1, and initiate at 300W microwave power for 3 minutes. Then add 200g of tetraethylenepentamine according to the mass ratio of monomer to bamboo cellulose in the ratio of 1:0.5, mix evenly, react at 350W microwave power for 10min, wash with distilled water and dry at 60°C for 10h...

Embodiment 3

[0066] Weigh 100g of cassava stalk fibers, and after being decomposed by a decomposer for 3 minutes, wash with distilled water at a temperature of 25°C, then wash with ethanol with a three-fold volume concentration of 95%, filter and dry, and then soak in 30% NaOH solution for 10 hours to activate After treatment, filter with suction, wash until the pH value is 7, and dry; then add 50 g of water to moisten according to the mass ratio of cassava stalks and water at a ratio of 2:1, and microwave gelatinization at a power of 500W for 2 minutes. Take out the gelatinized product and add 25g potassium persulfate initiator in the ratio of 4:1 by the mass ratio of cassava stalk fiber and initiator, initiate 5min under 100W microwave power, then be 1:4 by the mass ratio of monomer and cassava stalk Add 25g of triethylenetetramine, mix well, react under 500W microwave for 3min, wash with distilled water, and dry at 60°C for 10h to obtain 129g of toxic gas adsorption material.

[0067] T...

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Abstract

The invention discloses a method for preparing a cellulose-based toxic gas adsorbing material. The method mainly comprises the following steps of: activating a natural cellulose material after dispersing, defibering and washing by utilizing a NaOH solution, and drying the natural cellulose material; adding water to wet the cellulose, arranging the wet cellulose in a microwave extraction reactor to carry out gelatinization for 1-5min, adding an initiator to initiate for 1-5min, adding a monomer to react for 2-15min to obtain a synthesized graft copolymerization product; and washing the synthesized graft copolymerization product in distilled water and drying at 60 DEG C for 10h to obtain the cellulose-based toxic gas adsorbing material. The cellulose-based toxic gas adsorbing material prepared by using the method disclosed by the invention has the advantages of high adsorption speed, large adsorption quantity, easiness in desorption, simpleness and convenience for regenerating and good chemical stability, is an ideal adsorption material for various organic gases, such as acidic toxic gas, formaldehyde and the like, and can be applied to indoor air purification, various sudden toxic gas leakage accidents and appliances for labor protection.

Description

technical field [0001] The invention relates to the technical field of toxic gas adsorption materials, in particular to a preparation method of cellulose-based toxic gas adsorption materials. Background technique [0002] Various toxic gases discharged from industry are potentially harmful persistent pollutants. Toxic gases in the air mainly include HCl, HF, SO 2 , H 2 S, NH 3 , HCHO et al. These toxic gases affect air circulation and have a stimulating effect on the human body. They can cause headaches, nausea, vomiting, loss of appetite, etc., and high concentrations can cause hemolytic anemia and liver and kidney damage. Therefore, how to treat and prevent toxic gases in the air Air pollution is becoming more and more important for sustainable development. [0003] At present, the commonly used toxic gas adsorption materials can be divided into two categories according to the adsorption principle, one is physical adsorption, such as activated carbon adsorption, molecu...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/30B01D53/04
Inventor 朱红祥夏南南王双飞邓超冰王英辉何辉穆英啸陈颖王磊刘杨
Owner GUANGXI UNIV
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