Catalyst, preparation method thereof and method for preparing aliphatic glycidyl ether by using catalyst

A glycidyl ether and catalyst technology, applied in the field of synthesis of aliphatic glycidyl ether, can solve problems such as poor selectivity, high total chlorine content, corrosion of reaction equipment, etc., and achieve good product quality, low organic chlorine content, and equipment corrosion Sexually low effect

Inactive Publication Date: 2013-07-10
NANJING FORESTRY UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of this type of acidic catalyst not only has the disadvantages of serious corrosion to the reaction equipment, inconvenient use, and inability to recycle and recycle; it also has poor selectivity in the ring-opening reaction, resulting in many by-products in the intermediate product, making the epoxy of the final product Low value, high total chlorine content

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Take 5g of activated carbon and impregnate in 75g of HNO with a mass fraction of 10-30% 3 In the solution, the immersion temperature is 20-40°C, the immersion time is 3-4h, then the activated carbon is taken out and washed to neutrality, filtered and dried to obtain the modified activated carbon; after the modified activated carbon is impregnated in the The catalyst can be obtained by immersing in 75g of toluene solution with 0.5% boron mass fraction, immersing temperature at 30-45°C, and immersing time for 3-4 hours, filtering and drying. The immobilized amount of the activated carbon-supported boron trifluoride catalyst was measured to be 5%.

Embodiment 2

[0026] Take 5g of activated carbon and first impregnate it in 50g of HNO with a mass fraction of 10-30%. 3 In the solution, the immersion temperature is 40-70°C, the immersion time is 2-3h, then the activated carbon is taken out and washed to neutrality, filtered and dried to obtain the modified activated carbon; after the modified activated carbon is impregnated in the The catalyst can be obtained by immersing in 50g of toluene solution with 2% boron mass fraction, immersing temperature at 45-60°C and immersing time for 2.5-3 hours, filtering and drying. It is measured that the immobilized amount of the activated carbon-supported boron trifluoride catalyst is 16%.

Embodiment 3

[0028] Take 5g of activated carbon and impregnate in 25g of HNO with a mass fraction of 10-30% 3 In the solution, the immersion temperature is 70-100°C, the immersion time is 1-2h, then the activated carbon is taken out and washed to neutrality, filtered and dried to obtain the modified activated carbon; after the modified activated carbon is impregnated in the The catalyst can be obtained by immersing in 50g of toluene solution with 5% boron mass fraction at 60-70°C for 1-2.5 hours, filtering and drying. It is 20% that the immobilization capacity of this activated carbon immobilized boron trifluoride catalyst is recorded.

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PUM

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Abstract

The invention discloses a catalyst which comprises an activated carbon body, wherein boron trifluoride is fixedly loaded on the outer surface of the activated carbon body. The solid-phase catalyst formed by fixedly loading boron trifluoride on the activated carbon is good in selectivity on the main reaction in the ring-opening reaction process that aliphatic glycidyl ether is prepared, and a final product is high in epoxy value, low in organic chloride content and good in quality; and in addition, the solid-phase catalyst is low in equipment corrosion, easy to be separated from a reaction product after the ring-opening reaction is accomplished, and can be recycled and reused after being separated.

Description

technical field [0001] The invention relates to the synthesis field of aliphatic glycidyl ethers, in particular to a catalyst, a preparation method thereof and a method for preparing aliphatic glycidyl ethers using the catalyst. Background technique [0002] Aliphatic glycidyl ether is a linear aliphatic epoxy-based diluent, which contains ether bonds and epoxy groups in the molecule, and has the advantages of low viscosity and good dilution effect; it participates in the curing reaction during curing and forms a uniform system. Commonly used reactive diluents for epoxy resins can be widely used in the dilution of epoxy materials such as solvent-free insulating paint, epoxy potting and encapsulation materials, solvent-free epoxy floor coatings and epoxy adhesives, among which high epoxy value The high-quality distillate can also be used as a modified material for fatty amine, imidazole and other amine curing agents. [0003] The synthesis of aliphatic glycidyl ether mainly ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/12C07D301/26C07D303/22C07D303/27
Inventor 朱新宝程振朔
Owner NANJING FORESTRY UNIV
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