Method for preparing carbonyl fluoride and trifluoroacetyl fluoride simultaneously

A technology for trifluoroacetyl fluoride and carbonyl fluoride, which is applied in the field of preparation of carbonyl fluoride and trifluoroacetyl fluoride at the same time, can solve the problems of complex preparation process, unsuitable for industrialization, etc., and achieves the effect of overcoming the complex process

Inactive Publication Date: 2011-11-30
张小燕 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above method can simultaneously prepare carbonyl fluoride and trifluoroacetyl fluoride, but the preparation process is complicated and not suitable for industrialization

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Premix 50ml / min oxygen and 50ml / min hexafluoropropylene gas, preheat to 200°C, pass through a nickel reaction tube with an outer diameter of Φ19mm and a length of 300mm, heat the reaction tube to 250°C, and fill the reaction tube with 40ml of silver oxide. The composition of the gas at the outlet of the reaction tube was detected by a gas chromatograph. The results are listed in Table 1.

Embodiment 2

[0022] Pre-mix 60ml / min oxygen and 50ml / min hexafluoropropylene gas, preheat to 200°C, pass through a nickel reaction tube with an outer diameter of Φ19mm and a length of 300mm, heat the reaction tube to 250°C, and fill the reaction tube with 40ml of 10% Ag 2 O / activated carbon (i.e. activated carbon supported silver oxide, silver oxide accounts for 10% by weight of the carrier). The composition of the gas at the outlet of the reaction tube was detected by a gas chromatograph. The results are listed in Table 1.

Embodiment 3

[0024] Pre-mix 30ml / min oxygen and 30ml / min hexafluoropropylene gas, preheat to 200°C, pass through a nickel reaction tube with an outer diameter of Φ19mm and a length of 300mm, heat the reaction tube to 250°C, and fill the reaction tube with 40ml10%Ag 2 O / Al 2 o 3 (ie silver oxide supported on alumina, silver oxide accounts for 10% by weight of the carrier). The composition of the gas at the outlet of the reaction tube was detected by a gas chromatograph. The results are listed in Table 1.

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Abstract

The invention relates to a "preparation method for simultaneously preparing carbonyl fluoride and trifluoroacetyl fluoride", which belongs to the field of chemical synthesis. The preparation method of simultaneously preparing carbonyl fluoride and trifluoroacetyl fluoride involves contacting oxygen and hexafluoropropylene gas in a reactor under catalyst conditions, and the catalyst is silver oxide, activated carbon-supported silver oxide or aluminum oxide-supported oxidation silver. The reaction of the invention is easy to control, has mild conditions and high conversion rate, and can simultaneously prepare carbonyl fluoride and trifluoroacetyl fluoride through one-step reaction, and is suitable for large-scale preparation of carbonyl fluoride and trifluoroacetyl fluoride.

Description

technical field [0001] The invention relates to the technical field of chemical synthesis, in particular, the invention relates to a method for simultaneously preparing carbonyl fluoride and trifluoroacetyl fluoride. Background technique [0002] Carbonyl fluoride, trifluoroacetyl fluoride and other peracyl fluorides can be used in cleaning agents, etching agents, pesticide intermediates, fluorine-containing material monomers, etc. in the electronics industry, and are an important fluorine-containing compound. [0003] PCT / 2006 / 319652 discloses a method for preparing carbonyl fluoride by reacting tetrafluoroethylene and oxygen; PCT / JP2005 / 023175 discloses a method for synthesizing carbonyl fluoride by reacting carbon monoxide and fluorine; CN1121064A discloses a The method for preparing trifluoroacetyl fluoride by reaction of anhydrous HF and trifluoroacetyl chloride under the catalysis of chromium and magnesium catalyst; US4374782A discloses a kind of hexafluoroacetone dime...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C53/48C07C51/58C01B31/00B01J23/50
Inventor 张小燕鲍鹏
Owner 张小燕
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