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Method of catalytically hydrating alkylene oxide to produce ethylene glycol

A technology for the catalytic hydration of alkylene oxide and alkylene oxide, which is applied in the production of bulk chemicals, chemical instruments and methods, preparation of organic compounds, etc. Harsh and other problems, to achieve the effect of increasing the glass transition temperature, good heat resistance, and high swelling resistance

Active Publication Date: 2019-04-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the monomer synthesis route of this route is long, the operating conditions are harsh, the yield is low and the functional monomer is difficult to separate and purify, and the purity is not high, which affects the performance of the final polymer

Method used

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  • Method of catalytically hydrating alkylene oxide to produce ethylene glycol
  • Method of catalytically hydrating alkylene oxide to produce ethylene glycol
  • Method of catalytically hydrating alkylene oxide to produce ethylene glycol

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] [Example 1] Preparation of Ion Exchange Resin Catalyst

[0036] Add 47.0 grams of styrene, 2.3 grams of divinylbenzene and 1.6 grams of benzoyl peroxide initiator in a 500 milliliter three-necked flask, stir and react at 60°C for 2.0 hours; then add 0.6 grams of multi-walled carbon nanotubes and continue stirring Prepolymerization was carried out for 1 hour. 260 mL of deionized water in which 2.0 g of gelatin had been dissolved was added. Adjust the stirring speed, and at the same time gradually raise 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 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 0.35-0.60mm Microsphere A1.

[0037] Chloromethylation of composite gel microsph...

Embodiment 2

[0042] [Example 2] Preparation of Ion Exchange Resin Catalyst

[0043] Add the monomer mixture solution (60.0 gram styrene, 1.0 gram divinylbenzene, 1.6 gram multi-walled carbon nanotubes and 1.0 gram benzoyl peroxide that contains initiator in 500 milliliters three-necked flask, this solution is prior to 70 ℃ Stir the reaction for 0.5 hours), start the stirrer, add a mixed solution of 200 ml deionized water and 4 grams of polyvinyl alcohol, 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 , reacted for 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 Microsphere B1.

[0044] Chloromethylation of composite microspheres: in a 500-ml three-necked flask, add 50 grams of composite microspheres B1 and 200 milliliters of chloroet...

Embodiment 3

[0049] [Example 3] Preparation of Ion Exchange Resin Catalyst

[0050] Add the monomer mixture solution (42.5 grams of styrene, 2.5 grams of divinylbenzene, 0.1 gram of multi-walled carbon nanotubes and 2.0 grams of benzoyl peroxide containing the initiator in a 500 milliliter three-necked flask, the solution was heated at 70° C. Stirring reaction for 1.5 hours), add a mixed solution of 200 ml deionized water and 4 grams of polyvinyl alcohol, heat up to 85°C, react for 3 hours, then heat up to 90°C, react for 9 hours, finally heat up to 100°C, react for 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 Microsphere C1.

[0051] Chloromethylation of composite microspheres: In a 250 ml three-necked flask, add 20 g of composite microspheres C1 and 100 ml of 1,4-dichloromethoxybutane,...

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PUM

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Abstract

The invention relates to a method of catalytically hydrating alkylene oxide to produce ethylene glycol. The method includes: under hydration reaction, subjecting alkylene oxide and water to contact with ion exchange resin catalyst; the ion exchange resin catalyst has a structural general formula that is shown in the description; the symbol herein is gel-type nano composite resin matrix; M<-> is ananion, selected from bicarbonate ions, hydroxyl ions, hydrogen sulfite sulfites, carboxylate ions, and citrate ions; POSS is polyhedral oligomeric silsesquioxane unit; another symbol herein is an imidazolium cation; R is a connective group between the POSS unit and the imidazolium cation unit, and is alkylene or arylene.

Description

technical field [0001] The invention relates to a method for producing ethylene glycol by catalytic hydration of alkylene oxide. Background technique [0002] Ion exchange resin is a functional polymer material, rich in ion exchange groups, resistant to acid and alkali solutions and many organic solvents, and has strong solvent stability. Industrially, styrene and divinylbenzene are copolymerized to prepare the matrix of ion exchange resins, and anion exchange resins are prepared through chloromethylation and amination reactions. High molecular polymers represented by ion exchange resins have gradually become the third material besides metal materials and inorganic non-metal materials. And it has a wide range of applications in biomedicine, aerospace, information technology, multifunctional catalysis and other fields. [0003] At the end of the 20th century, Shell, Dow, and SD companies began to study the application of ion exchange resins in catalytic hydration. Lemanski ...

Claims

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Application Information

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IPC IPC(8): C07C29/10C07C31/20B01J31/08
CPCB01J31/08C07C29/106C07C31/202Y02P20/52
Inventor 俞峰萍谢同
Owner CHINA PETROLEUM & CHEM CORP
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