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A kind of preparation method of iodine pentafluoride

A technology of iodine pentafluoride and fluorination, applied in the field of fluorine-containing compounds, can solve the problems of limited production scale and low output, and achieve the effects of improving utilization rate, low cost and easy availability of raw materials

Active Publication Date: 2018-06-12
JUHUA GROUP TECH CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, what is used here is generally high carbon chain perfluoroiodoalkane, and the output of high carbon chain perfluoroiodoalkane is very small, which limits the production scale of this process route
This route is only suitable for manufacturers of perfluoroiodoalkanes, and is used to deal with a small amount of byproducts of high carbon chain perfluoroiodoalkanes in the synthesis process

Method used

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  • A kind of preparation method of iodine pentafluoride
  • A kind of preparation method of iodine pentafluoride

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Add 20kg sodium iodide and solvent iodine pentafluoride 150kg in the reaction kettle (material: stainless steel 316L, pressure resistance: 1.0MPa) with reflux condenser and stirring, start stirring, and the rotating speed is 150 rev / mins, then add to reaction liquid The fluorine-nitrogen mixed gas with a volume concentration of 95% of fluorine gas is passed into the reaction tank for reaction, the speed of feeding the fluorine-nitrogen mixed gas is 50L / h, the reaction temperature in the reactor is controlled at 85°C, and the tail gas generated by the reaction is condensed and refluxed. The non-condensable gas is sent to the tail gas absorption system. After 180 hours of reaction, stop feeding the mixed gas of fluorine and nitrogen, filter and distill the reaction solution in the reactor to obtain 179.3kg of iodine pentafluoride, and remove 150kg of iodine pentafluoride as a solvent. Obtain 29.3kg of iodine pentafluoride product, the yield is 98.9%, and the product purity...

Embodiment 2～6

[0030] The operating method is the same as in Example 1, and the test conditions and results are shown in the following table.

[0031]

[0032]

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PUM

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Abstract

The invention discloses a preparation method of iodine pentafluoride. According to the preparation method, iodized alkali metal salt or iodized alkaline-earth metal salt is used as a raw material, iodine pentafluoride is used as a solvent, and a fluorine-nitrogen gas mixture is continuously introduced. At the reaction temperature of 50-150 DEG C, the iodized alkali metal salt or alkaline-earth metal salt is fluorinated for 150-500 h so as to obtain iodine pentafluoride. The invention has advantages as follows: the technology is simple; the raw material is easily available; reaction efficiency is high; and the method is green and environmentally friendly and is suitable for industrial production.

Description

technical field [0001] The invention relates to the field of fluorine-containing compounds, in particular to a preparation method of iodine pentafluoride. Background technique [0002] Pure iodine pentafluoride is a colorless liquid, volatile, and emits white smoke in the air to generate hydrogen fluoride, so it is highly toxic and corrosive. Iodine pentafluoride corrodes the skin, erodes glass when heated, and corrodes metal easily as long as there is a very small amount of moisture on the metal surface. Iodine pentafluoride reacts violently with water and can ignite organic matter, showing strong oxidizing properties. Therefore, the production, storage and transportation of iodine pentafluoride have higher requirements. [0003] With the rapid development of the world's fluorine industry, iodine pentafluoride, as an important raw material and intermediate in the fluorine industry, is a product with market potential and broad market prospects. In recent years, the annual ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B7/24
CPCC01B7/24
Inventor 吴庆耿为利王宗令刘华平
Owner JUHUA GROUP TECH CENT
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