A kind of high specific surface area magnetic anion exchange resin and its preparation method and application
A high specific surface area, exchange resin technology, used in anion exchange, anion exchanger materials, ion exchange, etc., can solve the problems of poor removal of non-polar organic matter, low specific surface area, etc., to achieve excellent adsorption, high specific surface area. , the effect of broad application prospects
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Embodiment 1
[0035] A specific preparation process of a high specific surface area magnetic anion exchange resin, the steps are: (a) adding 500 g of an aqueous solution containing 3.5% gelatin and 20% sodium chloride in a 1L three-neck flask with a mass ratio. (b), (c) and (d) steps are combined, 25g high-purity divinylbenzene, 25g methyl acrylate, 25g toluene, 1.5g benzoyl peroxide, 10g particle diameter are about the Fe of 0.8 μm 3 o 4 After mixing the magnetic particles evenly, add them into the three-neck bottle, stir when adding, the stirring speed is 100rpm, and raise the temperature to 60°C, keep for 8 hours; then raise the temperature to 85°C, keep for 15 hours and discharge. (e) After the obtained resin is cooled, it is washed and dried with deionized water, extracted with acetone in a Soxhlet extractor for 8 hours, and dried in vacuum. (f) The dried resin was swelled with 1,2-dichloroethane for 6 hours, added ferric chloride with a mass of 20% of the mass of the resin and reacte...
Embodiment 2
[0039] Add 500 g of an aqueous solution containing 2% gelatin and 10% sodium chloride in a mass ratio to a 1L three-necked flask. 25g of high-purity divinylbenzene, 25g of methyl acrylate, 50g of toluene, 1g of benzoyl peroxide, and 10g of Fe with a particle size of about 0.5μm 3 o 4 The magnetic particles are mixed and stirred evenly and added to the three-necked flask, and stirred during the addition process, the stirring speed is controlled at 150-250rpm, and the temperature is raised to 70°C and kept for 6 hours; the temperature is then raised to 90°C and kept for 12 hours to discharge. After the obtained resin was cooled, it was washed and dried with deionized water, extracted with acetone in a Soxhlet extractor for 8 hours, and dried in vacuum. The dried resin was swelled with 1,2-dichloroethane for 9 hours, added ferric chloride with 40% of the mass of the resin and reacted at 60°C for 12 hours, after cooling, the resin was separated by centrifugation, washed with deio...
Embodiment 3
[0043] Add 500 g of 1.5% gelatin by mass ratio and 10% sodium chloride aqueous solution into a 1L three-necked flask. 30g of high-purity divinylbenzene, 20g of methyl acrylate, 100g of toluene, 2g of benzoyl peroxide, and 12.5g of Fe with a particle size of about 1 μm 3 o 4 The magnetic particles are mixed and stirred evenly and added to the three-necked flask, and stirred during the addition process, the stirring speed is controlled at 100-150rpm, and the temperature is raised to 75°C and kept for 4 hours; then the temperature is raised to 95°C and kept for 8 hours to discharge. After the obtained resin was cooled, it was washed with deionized water, filtered and dried, extracted with acetone in a Soxhlet extractor for 8 hours, and vacuum-dried at 50° C. for 8 hours. The dried resin was swelled with 1,2-dichloroethane for 6 hours, and ferric chloride with a mass of 20% of the resin mass was added to react at 45°C for 9 hours. After cooling, the resin was centrifuged, washed ...
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