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Acidic ionic liquid catalysis method for preparing phenyl ethyl phenyl ethane capacitor insulating oil

A technology of phenylethylphenylethane and acidic ionic liquid, which can be applied to organic liquid insulators, organic insulators, hydrocarbon production from halogen-containing organic compounds, etc. The effect that the range and catalyst activity remain unchanged

Active Publication Date: 2015-09-02
SICHUAN DONGFANG INSULATING MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies in the above-mentioned prior art, and solve the technical defects such as the low reactivity of acidic ionic liquids to catalyze styrene and the strong acidic chloroaluminate-type ionic liquids sensitive to water vapor must be carried out in anhydrous environment , providing a method for preparing phenylethylphenylethane with ethylbenzene and chlorine as raw materials, Friedel-Crafts alkylation acidic ionic liquid catalysis

Method used

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  • Acidic ionic liquid catalysis method for preparing phenyl ethyl phenyl ethane capacitor insulating oil
  • Acidic ionic liquid catalysis method for preparing phenyl ethyl phenyl ethane capacitor insulating oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-1

[0030] Add 5 mol of ethylbenzene into reactor A, and under stirring, 110°C and 5 g of azobisisobutyronitrile, 1 mol of chlorine gas is passed into reactor A at a constant speed for 3 hours. After the chlorine gas is passed through, continue the reaction for 2 hour, the hydrogen chloride gas generated in the reaction process is absorbed by water to obtain the discharge of by-product hydrochloric acid, and is down to room temperature, and the mixed material of α-chloroethylbenzene, β-chloroethylbenzene and ethylbenzene obtained;

[0031] Add the mixed material in reactor A to 5mol ethylbenzene and acidic ionic liquid catalyst 12g (CH3CH2)3NHCl / XZnCl2 (X=1.1~5), acidic ionic liquid catalyst 2g (CH3)3NHCl at 60°C at one time / XZnCl2 (X=1.1~5) mixture was reacted in Reactor B; after the mixing was completed, the reaction was continued at 100°C for 6 hours, and α-chloroethylbenzene and β-chloroethylbenzene were completely detected by gas chromatography. After consumption, stop the r...

Embodiment 1-2

[0033] Add 7 mol of ethylbenzene into reactor A, under stirring, 110°C and ultraviolet light irradiation triggering, 1 mol of chlorine gas is passed into reactor A at a constant speed for 3 hours, after the chlorine gas is passed through, continue to react for 2 hours, after the reaction The hydrogen chloride gas generated in the process is absorbed by water to obtain the by-product hydrochloric acid and discharged, and kept warm to obtain a mixture of α-chloroethylbenzene, β-chloroethylbenzene and ethylbenzene;

[0034] Add the mixed material in reactor A to 5mol ethylbenzene and 3g acidic ionic liquid catalyst (CH3CH2)3NHCl / XZnCl2 (X=2~3) and 2g acidic ionic liquid catalyst (CH3)3NHCl at 100°C at one time / XZnCl2 (X=2~3) mixture was reacted in Reactor B; after the mixing was completed, the reaction was continued at 100°C for 5 hours, and α-chloroethylbenzene and β-chloroethylbenzene were detected by gas chromatography. After consumption, stop the reaction, absorb the hydroge...

Embodiment 1-3

[0036] Add 4 mol of ethylbenzene to reactor A, and under the action of stirring, 120°C and ultraviolet light irradiation, feed 1 mol of chlorine gas into reactor A at a constant speed for 3 hours. The hydrogen chloride gas generated in the process is absorbed by water to obtain the by-product hydrochloric acid to be discharged, and cooled to room temperature to obtain a mixture of α-chloroethylbenzene, β-chloroethylbenzene and ethylbenzene;

[0037] Add the mixed material in the reactor A to the reactor B containing a mixture of 10mol ethylbenzene and 5g acidic ionic liquid catalyst (CH3CH2)3NHCl / XZnCl2 (X=1.1~5) at 100°C for reaction; the mixing is completed Afterwards, the reaction was continued at 80°C for 8 hours. After the complete consumption of α-chloroethylbenzene and β-chloroethylbenzene was detected by gas chromatography, the reaction was stopped, and the hydrogen chloride gas generated during the reaction was absorbed with water to obtain the by-product hydrochloric ...

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Abstract

The invention provides a method for preparing phenyl ethylbenzene ethane capacitor insulating oil through catalysis of acidic ionic liquid. The method is characterized in that 2-10mol of ethylbenzene reacts with 1mol of chlorine gas to generate a mixture of alpha-chloroethylbenzene and beta -chloroethylbenzene at 110 DEG C-150 DEG C through the ultraviolet irradiation or under the triggering action of a radical initiator, and the mixture generated through reaction is not separated and is directly mixed with a mixture of 5-20g of acidic ionic liquid catalyst and 2-10mol of ethylbenzene so as to react at 30-130 DEG C to prepare the phenyl ethylbenzene ethane. The phenyl ethylbenzene ethane capacitor insulating oil prepared by the method has excellent characteristics of normal temperature insulation oil, namely phenyl xylyl ethane; the condensation point of the phenyl ethylbenzene ethane capacitor insulating oil is far lower than that of the phenyl xylyl ethane; and the phenyl ethylbenzene ethane capacitor insulating oil has unique low-temperature-resistance performance and is particularly suitable for serving as low-temperature capacitor insulating oil.

Description

technical field [0001] The invention belongs to a preparation method of a compound containing only carbon and hydrogen, and relates to a method for preparing phenylethylphenylethane capacitor insulating oil by catalyzing an acidic ionic liquid. The phenylethylphenylethane (PEPE for short) product prepared by the invention is mainly used as insulating oil for capacitors, and is especially suitable for insulating oil for low-temperature capacitors. Background technique [0002] Capacitor insulating oil is one of the key materials for manufacturing high-performance power capacitors, and its quality determines the reliability of safe and efficient operation of high-voltage power grids. At present, all-film power capacitors use diarylethane type [including: phenylxylylethane (PXE for short) and phenylethylphenylethane (PEPE for short)] and benzyltoluene type capacitor insulating oil. The synthetic method of preparing phenylethylphenylethane is similar to that of phenylxylylethan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C15/16C07C1/26H01B3/22
Inventor 杨玉川唐安斌黄杰马庆柯赵宝祥
Owner SICHUAN DONGFANG INSULATING MATERIAL
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