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Immobilized ionic liquid catalyst and application thereof

A technology of ionic liquid and catalyst, which is applied in the field of immobilized ionic liquid catalysts, can solve the problems such as the reduction of catalyst catalytic efficiency, and achieve the effects of easy separation, good technical effect and high catalyst activity

Inactive Publication Date: 2017-02-15
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although after repeated use 4 times, the catalytic efficiency of the catalyst did not decrease

Method used

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  • Immobilized ionic liquid catalyst and application thereof
  • Immobilized ionic liquid catalyst and application thereof
  • Immobilized ionic liquid catalyst and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036]Add 50.0 grams of styrene, 2.0 grams of divinylbenzene and 0.6 grams of benzoyl peroxide initiator in a 500 milliliter three-necked flask, stir and react at 60°C for 1.5 hours; then add 1.6 grams of multi-walled carbon nanotubes and continue stirring Prepolymerization was carried out for 1 hour. 260 mL of deionized water in which 2.5 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, react for 5 hours, and finally raise the temperature to 98°C, and react for 6 hours. After the reaction, pour out the upper liquid, wash it with hot water at 85°C for several times, then wash it with cold water for several times, then filter it, put it in an oven for drying at 80°C, and sieve it to collect the particle size within the range of 0.35-0.60mm The composite gel microspheres of A.

[0037] Chloromethylation of composite gel microspheres: In a 5...

Embodiment 2

[0042] Add the monomer mixture solution (60.0 gram styrene, 3.0 gram divinylbenzene, 0.1 gram multi-walled carbon nanotubes and 1.0 gram benzoyl peroxide that contains initiator in 500 milliliters three-necked flask, this solution is preceded by 70 ℃ Stir the reaction for 0.5 hours), start the stirrer, add a mixed solution of 200 milliliters of deionized water and 5 grams of gelatin, heat up to 85°C, react for 3 hours, then heat up to 90°C, react for 9 hours, and finally heat up to 100°C, react 10 hours. After the reaction, pour out the upper liquid, wash with 85°C hot water, then wash with cold water, then filter, put it in an oven to dry at 80°C, sieve, and collect the composite gel with a particle size within the range of 0.35-0.60 mm Microspheres B.

[0043] Chloromethylation of composite microspheres: in a 500 ml three-necked flask, add 50 grams of composite microspheres B and 200 milliliters of chloroethyl ether, leave it at room temperature for 7 hours, start stirring,...

Embodiment 3

[0048] Change the anion in [Example 1] (using p-toluenesulfonic acid, the consumption is equimolar with the compound imidazolium cationic microsphere A), all the other preparation conditions are the same as [Example 1], finally obtain Cat-C, its structural formula is

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Abstract

The invention relates to an immobilized ionic liquid catalyst and application thereof. The immobilized ionic liquid catalyst has a general structural formula as defined in the specification. In the general structural formula, P is a nanogel resin matrix; n is an integer in a range of 2 to 12; and M<-> is a negative ion selected from a group consisting of a trifluoromethanesulfonate group, a p-toluenesulfonate group, a benzenesulfonate group, a methanesulfonate group, a tetrafluoroborate group and a hexafluorophosphate group. The immobilized ionic liquid catalyst can be applied to industrial olefine acid addition for preparation of corresponding esters.

Description

technical field [0001] The invention relates to a solid-supported ionic liquid catalyst and its application. Background technique [0002] Butyl acrylate is an important polymer monomer and organic intermediate. It is a colorless and transparent liquid at room temperature. It has good chemical and physical properties such as weather resistance, water resistance, oil resistance, and chemical resistance. The industrial production methods of acrylate mainly include nitrile alcohol method, acrylonitrile hydrolysis method, acrylate method and transesterification method. BASF, Rohm and Haas, Mitsubishi, Idemitsu Petrochemical Co., Ltd., Elevator Chemical, etc. abroad have all carried out scientific research and development on it, mainly focusing on the improvement of the production process, including the multi-phase azeotropic process. Development of new catalytic systems, including heteropolyacids and their salts, solid superacids, gel zeolite systems, and ion resin systems. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/06C07C67/04C07C69/54C07C69/14C07C69/145C07C69/24C07C69/616
Inventor 俞峰萍何文军宗弘元
Owner CHINA PETROLEUM & CHEM CORP
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