Process for producing trifluoroiodomethane and trifluoroacetyl iodide

Through the gas phase method, hydrogen iodide and trifluoroacetyl halide are used to carry out two-step reactions in the presence of a catalyst, which solves the problem of low efficiency in the preparation of trifluoroiodide and trifluoroacetyl iodine in the prior art, and achieves an efficient and fast process flow.

CN119930393APending Publication Date: 2025-05-06SOZOTEX PERFORMANCE MATERIALS AMERICA INC
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Patent Information

Application Number
CN202510303494.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2019-08-21
Filing Date
2019-08-23
Publication Date
2025-05-06

AI Technical Summary

Technical Problem

In the prior art, the process for preparing trifluoroiodide and trifluoroacetyl iodide is inefficient, has a long reaction time, and requires additional solvent separation steps, which reduces the process efficiency.

Method used

Using a gas phase process, by providing a reaction stream containing hydrogen iodide and trifluoroacetyl halide, a two-step reaction is performed in the presence of a catalyst to produce trifluoroacetyl iodide and trifluoroiodyl methyl ethane. This method requires no solvent, which increases the commercial appeal of the process.

Benefits of technology

The efficient production of trifluoroiodide and trifluoroacetyl iodine is achieved, which shortens the reaction time, improves the process yield, and reduces additional processing steps and improves the process efficiency.

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Abstract

The present application relates to a process for the production of trifluoroiodomethane and trifluoroacetyl iodide. The present disclosure provides a process for the production of trifluoroiodomethane, the process comprising: providing a reactant stream comprising hydrogen iodide and at least one trifluoroacetyl halide selected from the group consisting of trifluoroacetyl chloride, trifluoroacetyl fluoride, trifluoroacetyl bromide, and combinations thereof; reacting the reactant stream at a first reaction temperature from about 25 DEG C to about 400 DEG C in the presence of a first catalyst to produce an intermediate product stream comprising trifluoroacetyl iodide; and reacting the intermediate product stream at a second reaction temperature of about 200 DEG C to about 600 DEG C in the presence of a second catalyst to produce a final product stream comprising the trifluoroiodomethane.
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