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Method for synthesizing trifluoroiodomethane and pentafluoroethyliodide meanwhile

A kind of technology of pentafluoroiodoethane and trifluoroiodomethane, applied in the field of simultaneous synthesis of trifluoroiodomethane and pentafluoroiodoethane

Active Publication Date: 2011-01-26
泉州宇极新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method has many defects: the price of the raw material silver trifluoroacetate is very high, which is not suitable for industrial production; this type of salt is very toxic; the reaction of the solid reactant is easily out of control when heated, which is very unsafe
[0012]Sage Jean Marc (French patent 2794456) mentioned that C2F2F5I, its carrier uses activated carbon, and there is also the problem that the catalyst carrier is easy to oxidize or carbon deposits, which is not conducive to industrial production

Method used

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  • Method for synthesizing trifluoroiodomethane and pentafluoroethyliodide meanwhile

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Embodiment Construction

[0032] Below in conjunction with embodiment the present invention is further described.

[0033] The raw materials used in the present invention are all commercially available.

[0034] According to the characteristics of trifluoroiodomethane and pentafluoroiodoethane, the present invention adopts trifluoromethane, pentafluoroethane and iodine to catalyze reaction at high temperature under oxygen condition, and the preparation method comprises the following steps:

[0035] Implementation example 1

[0036] Catalyst preparation: 15ml carrier aluminum fluoride (BET specific surface area about 70m 2 / g) was washed with distilled water and dried in an oven at 120°C for 2 hours. The weighed active ingredient RbNO 3 1.6g and 0.8g of KF were dissolved in distilled water, then added to the dried carrier and left to stand overnight. After standing still, treat with a rotary evaporator, adjust the rotary evaporator to evaporate to dryness under reduced pressure at 80°C, 0.3atm, 120r...

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Abstract

The invention relates to 'a method for synthesizing trifluoroiodomethane and pentafluoraethyl iodide simultaneously,' which belongs to the filed of organic chemical synthesis. The method of synthesizing trifluoroiodomethane and pentafluoraethyl iodide simultaneously is characterized in that a alkali metal salt, a alkali earth metal salt and / or a copper salt are taken as the catalysts to be attached to a porous carrier; oxygen or the mixed gas of the oxygen and inert gas is pumped; a CHF3 and / or a HFC_125 are taken as raw materials; an iodine is taken as an iodinating agent; then iodination occurs in a reactor under high temperature to generate the C2F5I and the CF3I. The porous carrier is a fluoride or an oxyfluoride. The raw material of the invention is nontoxic and is convenient to get;the catalyst does not react with a reaction medium and has good stability. The synthesis process is safe and suitable for technical production.

Description

technical field [0001] The invention is a method for simultaneously synthesizing trifluoroiodomethane and pentafluoroiodoethane, and relates to a method for synthesizing trifluoroiodomethane (HFC-23) or pentafluoroethane (HFC-125) with iodine and oxygen under the action of a catalyst. A method for simultaneously synthesizing trifluoroiodomethane and pentafluoroiodoethane in the gas phase. Background technique [0002] Trifluoroiodomethane (CF 3 I) and pentafluoroiodoethane (C 2 f 5 1) has very high industrial value, is used for fire extinguishing agent, refrigerant, has higher application value in the initial telomerization agent of perfluoroalkyl iodide and the synthesis of fluorine-containing fine chemicals such as fluorine-containing pharmaceutical intermediates simultaneously . [0003] The fire extinguishing performance of trifluoroiodomethane is equivalent to that of Halon 1301, and it is the same gas fire extinguishing agent as Halon 1301, leaving no trace after f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C17/158C07C19/16
Inventor 刘东明杨光成毛燕超石磊寇鸿飞鲍鹏
Owner 泉州宇极新材料科技有限公司
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