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Method of catalytically hydrating alkylene oxide to produce ethylene glycol

A technology for catalyzing water and alkylene oxide with alkylene oxide, which is applied in chemical instruments and methods, preparation of hydroxyl compounds, preparation of organic compounds, etc. It can solve the difficulties of separation and purification of functional monomers, affect the performance of final polymers, and harsh operating conditions 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 g of styrene, 2.3 g of divinylbenzene, 30 g of polystyrene and 1.6 g of benzoyl peroxide initiator into a 500 ml three-necked flask, stir and react at 60°C for 1.5 hours; then add 0.6 g of multilayer Graphene, continue to stir for 1 hour for pre-polymerization. Add 260 ml of deionized water solution in which 2.0 g of gelatin has been dissolved. Adjust the stirring speed while gradually raising the temperature to 80°C and reacting for 5 hours; then raising the temperature to 90°C and reacting for 5 hours, and finally raising the temperature to 98°C and reacting for 8 hours. After the reaction, the upper liquid was poured out, washed with hot water at 85°C, then washed with cold water, then filtered, dried in an oven at 80°C, sieved, and collected composite macropores with a particle size in the range of 0.35~0.60mm Microsphere A1.

[0037] Chloromethylation of composite macroporous microspheres: In a ...

Embodiment 2

[0042] [Example 2] Preparation of ion exchange resin catalyst

[0043] Add the monomer mixture solution (60.0 g styrene, 1.0 g divinylbenzene, 60 g polystyrene, 1.6 g multilayer graphene and 1.0 g benzoyl peroxide) containing the initiator to a 500 ml three-necked flask. The solution was stirred and reacted at 70°C for 0.5 hours), started the stirrer, added a mixed solution of 200ml deionized water and 4g polyvinyl alcohol, heated to 85°C, reacted for 3 hours, then heated to 90°C, reacted for 9 hours, Finally, the temperature was raised to 100°C and reacted for 10 hours. After the reaction, the upper liquid was poured out, washed with hot water at 85°C, then washed with cold water, then filtered, dried in an oven at 80°C, sieved, and collected composite macropores with a particle size in 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 ml of chloroethyl...

Embodiment 3

[0049] [Example 3] Preparation of ion exchange resin catalyst

[0050] Add the monomer mixture solution containing initiator (42.5 g styrene, 2.5 g divinylbenzene, 10 g polystyrene, 0.1 g multilayer graphene and 2.0 g benzoyl peroxide) into a 500 ml three-necked flask. The solution was first stirred and reacted at 70°C for 1.5 hours), added 200ml of deionized water and 4g of polyvinyl alcohol mixed solution, heated to 85°C, reacted for 3 hours, then heated to 90°C, reacted for 9 hours, and finally heated to 100 ℃, react for 10 hours. After the reaction, the upper liquid was poured out, washed with hot water at 85°C, then washed with cold water, then filtered, dried in an oven at 80°C, sieved, and collected composite macropores with a particle size in the range of 0.35~0.60 mm Microsphere C1.

[0051] Chloromethylation of composite microspheres: In a 250 ml three-necked flask, add 20 grams of composite microspheres C1 and 100 ml of 1,4-dichloromethoxybutane, let stand at room temp...

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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, wherein the symbol herein is macroporous nano composite resin matrix;M<-> is an anion, 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 unit; 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 preparing ethylene glycol by catalytic hydration of the alkylene oxide. Background technique [0002] Ion exchange resin is a kind of functional polymer material, rich in ion exchange groups, resistant to acid and alkali solutions and many organic solvents, and has strong solvent stability. In industry, styrene and divinylbenzene are copolymerized to prepare the matrix of ion exchange resin, and the anion exchange resin is prepared through chloromethylation and amination reactions. High molecular polymers represented by ion exchange resins have gradually become the third material besides metallic materials and inorganic non-metallic materials. And it has a wide range of applications in the fields of biomedicine, aerospace, information technology, and multifunctional catalysis. [0003] At the end of the 20th century, Shell, Dow, and SD companies began to study the application of ion exchange resins in catalytic hydratio...

Claims

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Application Information

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IPC IPC(8): C07C31/20C07C29/10B01J31/08C08G81/02C08F8/00C08F8/30C08F212/08C08F212/36C08F2/44C08K3/04C08J9/26
CPCB01J31/08C07C29/106C08F8/24C08F8/30C08F212/08C08G81/024C08J9/26C08J2201/0464C08J2325/08C08K3/04C08K2201/011C07C31/202C08F212/36C08F2/44Y02P20/52
Inventor 俞峰萍何文军
Owner CHINA PETROLEUM & CHEM CORP
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