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Method for synthesizing ethylene glycol propenyl ether catalyzed by solid base catalyst

A technology of ethylene glycol propenyl ether and solid base catalyst, which is applied in the field of fine chemicals, can solve the problems of poor selectivity and difficult separation of products, and achieve the effects of high conversion rate, reduced energy consumption and high catalyst activity

Inactive Publication Date: 2016-01-27
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently commonly used alkali catalysts include potassium hydroxide, sodium hydroxide, etc., which have problems such as poor selectivity, difficult separation of products, and coloring of products.

Method used

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  • Method for synthesizing ethylene glycol propenyl ether catalyzed by solid base catalyst
  • Method for synthesizing ethylene glycol propenyl ether catalyzed by solid base catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Add 191.4g of propylene alcohol and 3.96g of catalyst into a reactor with a volume of 2L, seal it, stir, and raise the temperature. When the temperature reaches 100°C, continue to introduce 72.6g of ethylene oxide into the reactor, and the pressure in the reactor is 0.2 ~0.4MPa, the reaction temperature is constant at 100°C, and the molar ratio of the reaction feed is: propenyl alcohol: ethylene oxide = 2.0:1 (mol). The conversion rate of ethylene oxide was 79.78%, and the yield of ethylene glycol propenyl ether was 63.44%.

Embodiment 2

[0023] Add 191.4g of propylene alcohol and 3.96g of catalyst into a reaction kettle with a volume of 2L, seal it, stir, and raise the temperature. When the temperature reaches 100°C, continue to introduce 48.4g of ethylene oxide into the reaction kettle, and the internal pressure of the reaction kettle is 0.2 ~0.4MPa, the reaction temperature is constant at 100°C, wherein the reaction feed molar ratio is: propenyl alcohol: ethylene oxide = 3.0:1 (mol). The conversion rate of ethylene oxide was 87.83%, and the yield of ethylene glycol propenyl ether was 70.85%.

Embodiment 3

[0025] Add 255.2g of propylene alcohol and 4.55g of catalyst into a reactor with a volume of 2L, seal it, stir, and raise the temperature. When the temperature reaches 100°C, continue to introduce 48.4g of ethylene oxide into the reactor, and the pressure inside the reactor is 0.2 ~0.4MPa, the reaction temperature is constant at 100°C, wherein the reaction feed molar ratio is: propenyl alcohol: ethylene oxide = 4.0:1 (mol). The conversion rate of ethylene oxide was 93.23%, and the yield of ethylene glycol propenyl ether was 75.83%.

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Abstract

The invention discloses a method for synthesizing ethylene glycol allyl ether under the catalysis of a solid base catalyst, belonging to the technical field of fine chemicals. The method comprises the following step: by taking allyl alcohol and epoxyethane as raw materials, performing ring-opening reaction on the epoxyethane under the action of a supported solid base catalyst KF / Al2O3, thus synthesizing the ethylene glycol allyl ether, wherein the mass percent of the supported KF / Al2O3 catalyst is 0.5-3.0% of the total mass of the reactants; the mol ratio of the reaction materials (allyl alcohol to epoxyethane) for the preparation of ethylene glycol allyl ether is (2.0-6.0):1; and the reaction temperature is 90-130 DEG C. The invention has the following advantages: the supported KF / Al2O3 catalyst is used for synthesizing ethylene glycol allyl ether, so that the defects that products are difficult to separate and are prone to color in the traditional homogeneous catalyst process are overcome; the process causes no corrosion to equipment and no pollution to environment; both energy consumption and material consumption are low; and the catalyst can be used repeatedly.

Description

technical field [0001] The present invention relates to the synthesis of ethylene glycol propenyl ether, is that propenyl alcohol and oxirane are raw materials, in the loaded solid base catalyst KF / Al 2 o 3 Under the action of ethylene oxide ring-opening reaction to synthesize ethylene glycol propenyl ether. It belongs to the technical field of fine chemicals. Background technique [0002] Ethylene glycol propenyl ether (Ethyleneglycolmonoallylether) contains ether linkages and hydroxyl groups, and is a fine chemical with both hydrophilic and lipophilic properties. In addition, ethylene glycol propenyl ether also contains polymerizable functional groups, showing high activity, and is a photocurable active monomer with good performance. [0003] With the continuous development of science and technology and the increasing emphasis on environmental protection in society, more and more attention has been paid to environmentally friendly photocuring technology, which has been ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C43/178C07C41/03B01J27/12
Inventor 郭登峰赵文刘准谢爱娟符孟乐于鼎杰
Owner CHANGZHOU UNIV