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Thermostable strong acid cation resin catalyst and its preparing method

A strong acidic cation and high temperature resistant technology, applied in chemical instruments and methods, physical/chemical process catalysts, organic compound/hydride/coordination complex catalysts, etc., can solve the problem of poor mechanical strength of resin at high temperature and complex pore purification process And other problems, to achieve the effect of improving uniformity, improving high temperature mechanical stability, and reducing costs

Active Publication Date: 2006-02-08
KAIRUI ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the above-mentioned problems of poor high-temperature mechanical strength of resin and complex pore purification process, the present invention proposes a simple preparation method of pressurized polymerization and pore purification method, and thus prepares a high-temperature-resistant strong acid cationic resin catalyst

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] (1) Polymerization: Add 20 liters of pure water into a 50-liter polymerization kettle, heat to 45°C, add 10 g of magnesium carbonate, 20 g of gelatin and 0.15 g of methine blue under stirring, and add 3 kg of benzene Ethylene, 1kg divinylbenzene, 20g benzoyl peroxide, 1kg white oil and 400g toluene mixed oil phase. Close the reaction kettle, feed clean compressed air into the reaction kettle, keep the gas phase pressure in the kettle at 0.5±0.05MPa, start stirring, adjust the liquid beads to an appropriate particle size, raise the temperature to 80°C, keep warm for 10 hours, filter, wash and dry , Screening to obtain 4.75 kg of white balls with a particle size of 0.315 to 1.120 mm.

[0050] (2) Solvent extraction: the white ball obtained in step (1) was extracted 5 times with 120# gasoline, after removing the porogen, dried to obtain 3.09 kg of semi-finished white ball.

[0051](3) Dichloroethane cooking: Add 3.09 kg of the above-mentioned white balls into a 50-liter r...

Embodiment 2

[0058] (1) Polymerization: Add 20 liters of pure water into a 50-liter polymerization kettle, heat to 45°C, add 10 g of magnesium carbonate, 20 g of gelatin and 0.15 g of methine blue under stirring, and add 3 kg of benzene Ethylene, 1kg divinylbenzene, 20g benzoyl peroxide mixed oil phase. Close the reaction kettle, feed clean compressed air into the reaction kettle, keep the gas phase pressure in the kettle at 0.5±0.05MPa, start stirring, adjust the liquid beads to an appropriate particle size, raise the temperature to 80°C, keep warm for 10 hours, filter, wash and dry , Screening to obtain 3.8 kg of white balls with a particle size of 0.315 to 1.120 mm.

[0059] (2) Dichloroethane cooking: Add 3.8 kg of the above-mentioned white balls into a 50-liter reactor equipped with a reflux condenser, then add 15 liters of dichloroethane, raise the temperature to 90°C, and maintain the pressure in the kettle at 0.3MPa for 10 hours , cooled to 15°C.

[0060] (3) Chlorination: Add 25...

Embodiment 3

[0065] Except that the halogenation process is different, the polymerization, solvent extraction, dichloroethane cooking, sulfonation, and resin pretreatment are all the same as in Example 1.

[0066] The halogenating agent of embodiment 3 is bromine, and its technological process is: add 770g white ball after dichloroethane cooking in 10 liters of reactors, then add 4kg dichloroethane, 8g anhydrous aluminum trichloride, stir to dissolve , at a temperature of 15±3°C, slowly add 1.9kg of bromine dropwise, and keep warm at this temperature for 6 hours, extract dichloroethane, and wash with fresh dichloroethane three times, 4kg each time. The washing liquid can be recycled after treatment. The resulting styrene-divinylbenzene copolymer with brominated benzene rings was then subjected to sulfonation and pretreatment in the same manner as in Example 1 to obtain a high temperature resistant resin catalyst with brominated benzene rings.

[0067] The finished resin catalyst of embodi...

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Abstract

The present invention solves the problem that the existing strong acid resin catalyst has bad high temperature mechanical intensity and complex hole purification technics, brings forward a simple preparing method for pressurization polymerization and hole purification method, the pressurization polymerization improves the uniformity of polymer bead body structure and the high temperature mechanical stability for resin, the extraction is executed by solvent naphtha first and the boiling is executed by halogeno-alkane, the hole purification method is simplified. The prepared strong acid cation resin catalyst has high temperature resistant and excellent catalytic activity and its high temperature stability is better than same kind of product.

Description

technical field [0001] The invention relates to a high-temperature-resistant strong acid cationic resin catalyst and its preparation method, in particular to a method of improving the uniformity of polymer white balls through a pressurized polymerization process, thereby significantly improving the high-temperature mechanical stability and thermal stability of the resin. A method for producing a high-temperature resin catalyst. Background technique [0002] Styrene-based strong acid resin catalysts have been widely used in organic synthesis industries such as etherification, hydration, esterification, and alkylation. This kind of resin catalyst can be divided into normal temperature catalyst and temperature-resistant catalyst according to the different use temperature. The temperature-resistant catalyst is used at a temperature of 130-200°C, while the sulfonic acid group of the usual polystyrene sulfonic acid resin will fall off significantly at 120°C. Therefore, the benze...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/10
Inventor 刘文飞毛进池张勇姚远东吴玉林
Owner KAIRUI ENVIRONMENTAL PROTECTION TECH
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