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Macroporous strong alkaline carbon nanotube composite ion exchange resin and preparation method thereof

A carbon nanotube composite and ion exchange resin technology, which is applied in ion exchange, anion exchange, chemical instruments and methods, etc., can solve the problems of poor swelling resistance and heat resistance

Active Publication Date: 2012-03-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] One of the technical problems to be solved by the present invention is that the existing strong basic ion exchange resin has poor heat resistance and poor swelling resistance, and a new macroporous strong basic carbon nanotube composite resin is provided , the resin has the characteristics of good heat resistance and excellent swelling resistance

Method used

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  • Macroporous strong alkaline carbon nanotube composite ion exchange resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Add 38.0 grams of p-chloromethylstyrene, 8.0 grams of divinylbenzene, 0.6 grams of benzoyl peroxide initiator, and 35.0 grams of polystyrene in a 250 milliliter three-necked flask, and stir at 60 °C for 1.5 hours; then add 2.4 g of multi-walled carbon nanotubes were stirred for 1 hour for pre-polymerization. 130 mL of deionized water in which 1.3 g of polyvinyl alcohol had been dissolved was added. Adjust the stirring speed while gradually raising the temperature to 80°C and react for 5 hours; then raise the temperature to 90°C and react for 5 hours; finally raise the temperature to 98°C and react for 6 hours. After the reaction, pour out the upper layer liquid, extract the microspheres with a Soxhlet extractor for 5 hours, then wash the microspheres with hot water, filter, put them in an oven for drying at 80°C, and sieve to collect a particle size of 0.35 Composite microspheres A in the range of ~0.60 mm.

Embodiment 2

[0024] In a 500 ml three-necked flask, add 3.1 g of polyvinyl alcohol and 300 ml of deionized water, start stirring and raise the temperature to completely dissolve the polyvinyl alcohol. Stop stirring, add 80.0 grams of p-chloromethylstyrene, 9.0 grams of divinylbenzene and 1.5 grams of benzoyl peroxide initiator, 30.0 grams of polystyrene, and a mixed solution of 9.9 grams of multi-walled carbon nanotubes after cooling slightly . Adjust the stirring speed while gradually raising the temperature, and react at 80°C for 5 hours; then raise the temperature to 88°C, continue the reaction for 5 hours, and finally raise the temperature and react at 100°C for 6 hours. After the reaction, pour out the upper layer liquid, extract the microspheres with a Soxhlet extractor for 5 hours, then wash the microspheres with hot water, filter, put them in an oven for drying at 80°C, and sieve to collect a particle size of 0.35 Composite microspheres B in the range of ~0.60 mm.

Embodiment 3

[0026]Add 140 grams of p-chloromethylstyrene, 8.5 grams of divinylbenzene and 3.9 grams of benzoyl peroxide initiator, 90.0 grams of polystyrene, and 12.4 grams of multi-walled carbon nanotubes in a 1000 milliliter three-necked flask, at 65 The mixture was stirred at °C for 1.5 hours to carry out prepolymerization. Then 500 ml of deionized water in which 5.0 g of polyvinyl alcohol had been dissolved was added. Adjust the stirring speed, raise the temperature to 80°C within one hour, and react continuously for 5 hours; then raise the temperature to 90°C, react for 5 hours, and finally raise the temperature to 98°C, and react for 6 hours. After the reaction, pour out the upper layer liquid, extract the microspheres with a Soxhlet extractor for 5 hours, then wash the microspheres with hot water, filter, put them in an oven for drying at 80°C, and sieve to collect a particle size of 0.35 Composite microspheres C in the range of ~0.60 mm.

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Abstract

The invention relates to a macroporous strong alkaline carbon nanotube composite ion exchange resin and a preparation method thereof, and aims to solve problems of weak heat resistance and weak swelling resistance of an ion exchange resin in a prior art. The macroporous strong alkaline carbon nanotube composite ion exchange resin comprises the following components: (1) 40-65% of monomer; (2) 3-10% of copolymerization monomer; (3) 0.1-10% of nano material; and (4) 0.1-2% of initiator. The monomer is at least one selected from p-chloromethyl styrene, 4-(3-chloropropyl) styrene, 4-(3-bromopropyl) styrene, 4-(4-chlorobutyl) styrene, 4-(4-brombutyl) styrene, 4-(5-chloroamyl) styrene and 4-(5-bromoamyl) styrene; the copolymerization monomer is at least one selected from EGDMA, dipropenyl benzene, divinyl phenyl methane and divinyl benzene; the nano material is at least one selected from multi-wall carbon nanotube, single arm carbon nanotube and fullerene of C60 or C70; the initiator is at least one selected from benzoyl peroxide, azodiisobutyronitrile, lauroyl peroxide and cumyl hydroperoxide. The invention also provides a preparation method of the macroporous strong alkaline carbon nanotube composite ion exchange resin. The above technical scheme well solves the problems and can be applied to industrial production of ethylene oxide catalytic hydration.

Description

technical field [0001] The invention relates to a macroporous strongly basic carbon nanotube composite ion exchange resin and a preparation method thereof. Background technique [0002] As an emerging material, carbon nanotubes have caused a wave of research in the scientific community since their unique structure and performance (Iijima, S.; Ichihashi, T.Nature 1993, 363, 603-605; Wang , C.C.; Guo, Z.X.; Fu, S.K.; Wu, W.; Zhu, D.B. Progress in Polymer Science 2004, 29, 1079-1141.). For the preparation of polymer / carbon nanotube composites, commonly used methods include blending (solution blending, melt blending), in-situ polymerization, and chemical modification. Through these methods, the excellent mechanical and electrical properties of carbon nanotubes can be combined with polymers to obtain polymer nanocomposites with advantages such as high specific strength, strong designability, good fatigue resistance, and simple molding process. , to realize the complementary adv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F212/14C08F212/36C08F2/44C08F2/20C08F8/44C08K7/00C08K3/04C08J9/26B01J41/14
Inventor 俞峰萍蔡红何文军何立
Owner CHINA PETROLEUM & CHEM CORP
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