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Preparation method of perfluoroalkyl ethylene catalyst

A perfluoroalkylethylene and catalyst technology, which is applied in the direction of dehydrohalogenation preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve problems such as not being able to be used for a long time, affecting the use effect of industrial devices, and difficult to separate products , to achieve the effects of improved compatibility, enhanced binding force, and enhanced corrosion resistance

Active Publication Date: 2015-07-01
SHANDONG SITO BIO TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The liquid catalysts used in the above known technologies all have the problem that they are not easy to separate from the product, or cannot be used in multiple batches for a long time, which affects the use effect in industrial devices

Method used

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  • Preparation method of perfluoroalkyl ethylene catalyst
  • Preparation method of perfluoroalkyl ethylene catalyst

Examples

Experimental program
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Effect test

Embodiment 1

[0021] Add 100Kg chloromethylated polystyrene spheres into a 500L reactor, swell in 300Kg trimethylamine aqueous solution, add 5Kg of N-dimethylaminopropyl-N-triethoxysilylmethyl perfluorooctane sulfonamide ; The reaction was stirred at 45°C for 18 hours, and the product was obtained after the reaction was completed, and the obtained product number was M-1.

Embodiment 2

[0023] Add 100Kg chloromethylated polystyrene spheres to a 500L reactor, swell in 300Kg trimethylamine aqueous solution, add 1Kg of N-dimethylaminopropyl-N-triethoxysilylmethyl perfluorooctane sulfonamide ; Stirring and reacting at 40°C for 20h, the reaction was completed, and the product was obtained, and the obtained product number was M-2.

Embodiment 3

[0025] Add 100Kg chloromethylated polystyrene spheres to a 500L reactor, swell in 300Kg trimethylamine aqueous solution, add 10Kg of N-dimethylaminopropyl-N-triethoxysilylmethyl perfluorooctane sulfonamide ; The reaction was stirred at 80°C for 10 hours, and the product was obtained after the reaction was completed, and the obtained product number was M-3.

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Abstract

The invention provides a preparation method of a perfluoroalkyl ethylene catalyst. According to the method, chloromethyl polystyrene simultaneously reacts with N-dimethylamino propyl-N-triethoxy silicon methyl perfluorooctanesulfonamide and trimethylamine to prepare strong-alkali anion exchange resin; a mixture of quaternary ammonium salt of N-dimethylamino propyl-N-triethoxy silicon methyl perfluorooctanesulfonamide and trimethylamine quaternary ammonium salt is generated, and silane groups, fluorine and sulfamide groups are introduced to improve the compatibility of the catalyst and fluorine-containing raw material such as perfluoroalkyl ethyl iodide and enhance the temperature resistance of the anion resin catalyst; and the yield of perfluoroalkyl ethylene can be increased.

Description

technical field [0001] The invention relates to a preparation method of a catalyst, in particular to a preparation method of a perfluoroalkylethylene catalyst. Background technique [0002] The commonly used method for preparing perfluoroalkylethylene is to use perfluoroalkylethyl iodide to react with an excessive amount of alcohol solution of inorganic alkali, under mechanical stirring, reflux for a certain period of time, filter to remove solid salt after the reaction, and wash the solution with water to obtain perfluoroalkylethylene Perfluoroalkylethylene. [0003] CN 101300048 The trihydroiodoperfluoroalkanes prepared by the reaction of perfluoroalkyl iodides with perfluoroalkyltrihydroalkenes are directly used in the dehydroiodination step, or may preferably be recovered and purified by distillation, and then used in the dehydroiodination step. The dehydroiodination step is carried out by contacting trihydroiodoperfluoroalkane with an alkaline substance. Suitable bas...

Claims

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Application Information

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IPC IPC(8): C08F12/08C08F8/44C08F8/42C08F8/32B01J31/08C07C21/18C07C17/25
Inventor 孙贵捷
Owner SHANDONG SITO BIO TECHNOLOGY CO LTD
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