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Method of increasing hydrophilicity of complex function adsorption resin and reinforcing adsorbability of the complex function adsorption resin

A composite function, resin adsorption technology, applied in chemical instruments and methods, inorganic chemistry, alkali metal compounds, etc., to achieve the effect of strengthening adsorption performance, enhancing resin surface polarity, and improving hydrophilicity

Inactive Publication Date: 2007-09-12
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Literature search shows that although there have been reports on the existence and introduction of oxygen-containing functional groups on the surface of ultra-highly cross-linked adsorption resins, the methods for introducing oxygen-containing functional groups on the surface of composite functional ultra-highly cross-linked resins and how to strengthen the resin surface Polarity, improving hydrophilicity and strengthening resin adsorption performance have not been reported in the literature

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Get 30g of chlorine balls with a crosslinking degree of 8% (produced by Hebei Langfang Electric Power Resin Factory, etc.), add 30ml of nitrobenzene and dissolve it in a 250ml three-necked bottle for 12h; control the solution temperature to 363K, add 12g zinc chloride, while continuously feeding oxygen to continue the reaction until the residual chlorine content of the resin is 6%; exhaust the reaction mother liquor, wash the ultra-high cross-linked polystyrene resin with methanol; control the solution temperature to 303K, at a certain stirring speed Add 40ml of fuming sulfuric acid continuously under continuous reaction for 8 hours, take out and filter, extract, and dry, and the product obtained is an ultra-high cross-linked polystyrene resin with oxygen-containing composite function. g, the oxygen content is 6.2%.

[0027] Take more than 10mL (about 3g) of the resin and put it into a jacketed glass adsorption column (Φ16×180mm). The TOC (total organic carbon) of the ...

Embodiment 2

[0030] Get 30g of chlorine balls with a cross-linking degree of 8% (produced by Hebei Langfang Electric Power Resin Factory, etc.), add 50ml of dichloroethane and dissolve it in a 250ml three-necked bottle for 12h; control the solution temperature to 293K, and add 6g of zinc chloride, while continuously dripping 30ml of perchloric acid to continue the reaction until the residual chlorine content of the resin is 12%; exhaust the reaction mother liquor, wash the oxygen-containing ultra-high cross-linked polystyrene resin with methanol and methylal; control The temperature of the solution is 313K. At a certain stirring speed, 40ml of diethylamine is continuously added dropwise to continue the reaction for 8 hours. The product is taken out, filtered, extracted, and dried. The resin has an amine group content of 1.5 mmol / g and an oxygen content of 4.1%.

[0031] Take 10 mL (about 3 g) of the resin and put it into a jacketed glass adsorption column (Φ16×180 mm). The o-toluidine con...

Embodiment 3

[0034] Get 30g of chlorine balls with a cross-linking degree of 8% (produced by Hebei Langfang Electric Power Resin Factory, etc.), add 20ml of nitrobenzene and dissolve it in a 250ml three-necked bottle for 12h; control the solution temperature to 388K, and add 2g at a certain stirring speed ferric chloride, while continuously adding 10% H 2 o 2 30ml continued to react until the residual chlorine content of the resin was 9%; the reaction mother liquor was exhausted, and the oxygen-containing ultra-high cross-linked polystyrene resin was washed with ethanol; the temperature of the solution was controlled at 308K, and 25ml of pyridine was continuously added dropwise at a certain stirring speed to continue After reacting for 16 hours, take it out, filter, extract, and dry. The obtained product is an oxygen-containing composite functional ultra-high cross-linked polystyrene resin. The resin has a pyridyl content of 0.9 mmol / g and an oxygen content of 1.8%.

[0035] Take 10 mL (a...

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Abstract

The invention discloses a method for improving a composite resin adsorption function and strengthening its hydrophilic properties of adsorption. The steps include: (A) it bulges the chlorine-ball in the nitrobenzene or dichloroethane, and adds the catalyst, and accesses to the oxidant, and gradually warms up to 20 ~ 120deg.C, then it determines the response end by controlling the residual chlorine content of resin to achieve the high crosslinked polystyrene resin. (B) After the reaction, it pumps out the liquor of reaction, and washes the oxygenated high crosslinked polystyrene resin with organic solvent, and then it directly adds a functional reagent to further react with the residue chloromethyl on internal and external surface of resin to achieve the oxygen high crosslinked polystyrene resin. In which, the amount of the functional reagent is 0.5 to 3 times of the high amount of cross-linked polystyrene resin.

Description

technical field [0001] The invention relates to a method for improving the performance of a composite functional adsorption resin, more specifically a method for improving the hydrophilicity of a composite functional ultra-high cross-linked polystyrene resin and strengthening its adsorption performance. Background technique [0002] In recent years, composite functional ultra-high cross-linked polystyrene resin has been widely used in water purification, drug extraction, and chromatographic separation technology fields due to its high specific surface area, diverse surface chemistry, and high mechanical strength. Concentrate on the development of application technology, but the correlation between its surface chemistry and adsorption performance is still not enough. It has long been believed that the high adsorption capacity of composite functional ultra-high cross-linked polystyrene resins comes from the high specific surface area of ​​the resin, and the high adsorption sel...

Claims

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Application Information

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IPC IPC(8): C08J7/12C08L25/08B01J20/28B01J20/26
Inventor 张炜铭潘丙才许正文洪昌红张庆建张博李爱民潘丙军张全兴陈金龙
Owner NANJING UNIV
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