Method for preparing perfluorodipropionyl peroxide

A technology of perfluoropropionyl fluoride and carbonyl fluoride, which is applied in the preparation of acyl halides and organic chemistry, can solve problems such as high energy consumption, dangerous reaction, and difficult amplification, and achieve high productivity, simple production steps, and short reaction time Effect

Inactive Publication Date: 2017-05-31
TIANJIN CHANGLU CHEM NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The electrolytic reaction of propionyl chloride and anhydrous hydrogen fluoride is used to prepare perfluoropropionyl fluoride. The electrolytic reaction is d

Method used

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Examples

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Effect test

Embodiment 1

[0011] After the ratio of tetrafluoroethylene and carbonyl fluoride is 0.8:1, it is catalyzed by the catalyst sodium fluoride in the fixed bed reactor. The catalysis time is 5 seconds, and the catalysis temperature is 400°C. After circulating and cooling in liquid nitrogen, the perfluoropropionyl fluoride gas was collected, and the productivity of the perfluoropropionyl fluoride gas was 64%.

Embodiment 2

[0013] After the ratio of tetrafluoroethylene and carbonyl fluoride is 0.8:1, it is catalyzed by the catalyst potassium fluoride in the fixed bed reactor. The catalysis time is 5 seconds, and the catalysis temperature is 400°C. After circulating and cooling in liquid nitrogen, the perfluoropropionyl fluoride gas was collected, and the productivity of the perfluoropropionyl fluoride gas was 82%.

Embodiment 3

[0015] After the ratio of tetrafluoroethylene and carbonyl fluoride is 0.8:1, it is catalyzed by the catalyst cesium fluoride in the fixed-bed reactor. The catalysis time is 5 seconds, and the catalysis temperature is 400°C. After circulating and cooling in liquid nitrogen, the perfluoropropionyl fluoride gas was collected, and the productivity of the perfluoropropionyl fluoride gas was 96%.

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Abstract

The invention provides a method for preparing perfluorodipropionyl peroxide. According to the method, tetrafluoroethylene and carbonyl fluoride serving as raw materials react in a ratio of 0.8:1-1:0.8 to prepare perfluorodipropionyl peroxide through a fixed bed reactor by using one or more of potassium fluoride, sodium fluoride and cesium fluoride as a catalyst, wherein the temperature of the fixed bed reactor is 30-1000 DEG C; and the mixed gas is cyclically cooled in liquid nitrogen after reaction, and the perfluorodipropionyl peroxide gas is collected. According to the method for preparing perfluorodipropionyl peroxide, production steps are simple and safe, the reaction time is short and the production rate is high.

Description

technical field [0001] The invention relates to the field of fluorine-containing fine chemicals, in particular to a method for preparing perfluoropropionyl fluoride. Background technique [0002] At present, there are two main methods for preparing perfluoropropionyl fluoride. One, hexafluoropropylene oxide is effective in basic catalysts such as anion-containing compounds (KF, C s F, etc.), tertiary amine compounds (trimethylamine, etc.), amine oxides (pyridine oxide), and amino compounds (diethylaniline) are prepared at a certain temperature. This method is currently the most common preparation method. The disadvantage is that the raw material hexafluoropropylene oxide is expensive, so the cost of preparing perfluoropropionyl fluoride is quite high. In addition, the catalyst is also very easy to absorb water, and the catalyst will be deactivated and deteriorated. In addition, this method will inevitably produce hexafluoroacetone isomers, which are highly toxic. The most...

Claims

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Application Information

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IPC IPC(8): C07C51/58C07C53/50
CPCC07C51/58C07C53/50
Inventor 肖鑫徐雅硕耿谦姚素梅
Owner TIANJIN CHANGLU CHEM NEW MATERIAL CO LTD
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