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Pyridinium group-containing moderate-polarity skeleton adsorption resin and preparation method thereof

A technology of pyridine group and adsorption resin, which is applied to the field of polar skeleton adsorption resin containing pyridine group and its preparation field, and achieves the effects of high monomer conversion rate, cheap raw materials and easy regeneration.

Active Publication Date: 2013-05-01
JIANGSU NJU ENVIRONMENTAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It was found that the resin containing pyridine groups can selectively remove organic matter (such as isophthalic acid-5-sulfonic acid) in wastewater with high salt content and strong acidity and alkalinity, but the polarity of the resin backbone and the resin Regeneration performance needs to be further improved

Method used

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  • Pyridinium group-containing moderate-polarity skeleton adsorption resin and preparation method thereof
  • Pyridinium group-containing moderate-polarity skeleton adsorption resin and preparation method thereof
  • Pyridinium group-containing moderate-polarity skeleton adsorption resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] In a 2000ml four-neck flask, add 550g of deionized water, 3.2g of gelatin, and 60g of NaCl, stir and heat to 35°C until the gelatin and NaCl are completely dissolved, then turn off the stirring and let stand for 5 minutes. Mix 60g of 2-vinylpyridine, 135g of diethylene glycol dimethacrylate, 4g of divinylbenzene (80% by mass), 1g of pentanethiol, 380g of toluene, and 1.3g of azobisisobutyronitrile , into the four-neck flask. Purge with nitrogen for 5 minutes, turn off the nitrogen, and start stirring at a stirring speed of 175 rpm. After the organic phase is dispersed into oil droplets with a particle size of 300-900 μm in the water phase, the temperature is raised to 55°C, and the reaction is continued for 2 hours. The temperature was raised to 70°C, and the reaction was carried out for 4 hours, and then the temperature was raised to 85°C, and the reaction was carried out for 8 hours. Heating was stopped and stirring was maintained until the temperature dropped to roo...

Embodiment 2

[0030] In a 1000ml four-neck flask, add 330g of deionized water, 1.8g of hydroxyethyl cellulose, and 30g of NaCl, stir and heat to 50°C until the hydroxyethyl cellulose and NaCl are completely dissolved, then turn off the stirring and let stand for 5 minutes. After mixing 40g of 2-vinylpyridine, 50g of diethylene glycol dimethacrylate, 9g of divinylbenzene (80% by mass), 200g of xylene, and 1.1g of azobisisobutyronitrile, add four in the flask. Purge nitrogen for 5 minutes, turn off nitrogen, and start stirring at a stirring speed of 175 rpm. After the organic phase is dispersed into oil droplets with a particle size of 300-900 μm in the water phase, the temperature is raised to 55°C, and the reaction is continued for 3 hours. The temperature was raised to 70°C, and the reaction was carried out for 4 hours, and then the temperature was raised to 85°C, and the reaction was carried out for 6 hours. Heating was stopped and stirring was maintained until the temperature dropped to...

Embodiment 3

[0033] In a 2000ml four-neck flask, add 445g deionized water, 0.5g methyl hydroxypropyl cellulose, 2.5g gelatin, 0.5g polyvinyl alcohol, 1.5g hydroxyethyl cellulose, 50g NaCl, stir and heat to 55 ℃, until completely dissolved, turn off the stirring and let it stand for 5 minutes. 36g of 2-vinylpyridine, 140g of allyl methacrylate, 3.5g of divinylbenzene (80% by mass), 760g of xylene, and 1.9g of azobisisobutyronitrile were mixed evenly, and then added to a four-necked flask. Purge nitrogen for 5 minutes, turn off nitrogen, and start stirring at a stirring speed of 175 rpm. After the organic phase is dispersed into a suitable particle size in the water phase, heat up to 55°C, react for 2 hours, and continue to heat up to 70°C. React for 6 hours, then raise the temperature to 85°C, and react for 5 hours. Heating was stopped and stirring was maintained until the temperature dropped to room temperature. Then continue to heat up, steam out xylene, wash and discharge. Vacuum-dry ...

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Abstract

The invention discloses a pyridinium group-containing moderate-polarity skeleton adsorption resin and a preparation method thereof, and belongs to the technical field of polymer adsorption resin. The resin has the grain size of 0.3-0.85mm, the water content of 55 to 70 percent, the weak basic exchange capacity of 1.0-4.0mmol / g, the specific surface area of 200-750m<2> / g and the average pore size of 3-12nm. The preparation method comprises the following steps: 1, dissolving a dispersing agent and NaCl in water to obtain an aqueous phase; 2 making vinylpyridine, a cross-linking agent, a pore-forming agent, a regulator and an initiator form an organic phase; and 3, sequentially adding the aqueous phase and the organic phase into a reactor, introducing nitrogen to remove oxygen from the reactor, stirring until the organic phase is dispersed to proper grain size in the aqueous phase and temperature rise reaction is carried out, cooling to room temperature, steaming out the pore-forming agent, washing and drying. The resin has a good effect of removing organics with moderate polarity and polarity, and can be used for treating related wastewater; and synthesis steps for the resin are simple, and the monomer conversion rate is high.

Description

technical field [0001] The invention relates to the technical field of polymer adsorption resin and its preparation method, more specifically, to a polar skeleton adsorption resin containing pyridine groups and its preparation method. Background technique [0002] The styrene-skeleton adsorption resin containing weak base groups has dual functions of ion exchange and adsorption. It has a good adsorption capacity for polar organic substances in organic chemical wastewater. Many literatures have carried out relevant application research reports ( Wang Hailing, Yang Xiaoyan, Zhu Zhaolian, Liu Fuqiang, Song Yan. Chemical Environmental Protection, 2012,3:237-241; Cheng Xiumei, Chen Jinlong, Liu Fuqiang, Ge Junjie, Wang Xuejiang. Ion Exchange and Adsorption, 2004,20(5):445-451; B.C. Pan, Q.X. Zhang, F.W. Meng, X.T. Li, X. Zhang, J.Z. Zheng, W.M. Zhang, B.J. Pan, J.L. Chen, Environ. Sci. Technol., 2005, 39(9):3308–3313; B.C. Pan, Y. Xiong, A.M. Li, J.L. Chen, Q.X. Zhang, X.Y. Jin,...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/30C08F220/40C08F222/14C08F216/36C08F222/26C08F226/06C08J9/28
Inventor 蔡建国吕路张炜铭潘丙才赵昕林原苏双喜
Owner JIANGSU NJU ENVIRONMENTAL TECH
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