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Method for preparing trifluoromethyl sulfonic acid CF3SO3H by electrochemical fluorination gas-phase product of methanesulfonyl fluoride CH3SO2F

A technology for CH3SO2F, CF3SO3H, applied in the field of preparing trifluoromethanesulfonic acid CF3SO3H, can solve the problems of high raw material cost, many process steps, low product quality and the like, and achieve the effects of low raw material cost, simple process and short process route

Inactive Publication Date: 2010-06-23
ZHANGJIAGANG GUOTAI HUARONG NEW CHEM MATERIALS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] Among these preparation methods, the first two prepare trifluoromethanesulfonic acid CF 3 SO 3 There are many processing steps in the process of H, the amount of three wastes is large, the defects of low product quality and high production cost; the third method of preparing trifluoromethanesulfonic acid CF 3 SO 3 The technological method of H exists the defect that raw material cost is high

Method used

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  • Method for preparing trifluoromethyl sulfonic acid CF3SO3H by electrochemical fluorination gas-phase product of methanesulfonyl fluoride CH3SO2F
  • Method for preparing trifluoromethyl sulfonic acid CF3SO3H by electrochemical fluorination gas-phase product of methanesulfonyl fluoride CH3SO2F
  • Method for preparing trifluoromethyl sulfonic acid CF3SO3H by electrochemical fluorination gas-phase product of methanesulfonyl fluoride CH3SO2F

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Experimental program
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Effect test

Embodiment 1

[0047] Main equipment: tank-type stirred chemical reactor, leaching equipment, evaporation equipment, cooling equipment, filtering equipment.

[0048] Main raw material: Methylsulfonyl fluoride CH 3 SO 2 F electrochemical fluorination gas phase product, potassium hydroxide KOH, leaching agent acetone, hydrochloric acid HCl.

[0049] As shown in the figure, a methanesulfonyl fluoride CH 3 SO 2 F Electrochemical fluorination of gas phase products to prepare trifluoromethanesulfonic acid CF 3 SO 3 The method of H is based on methanesulfonyl fluoride CH 3 SO 2 F electrochemical fluorination gas phase product is raw material, and described method step is as follows:

[0050] (1) Cooling and condensation: In the cooling equipment, methylsulfonyl fluoride CH 3 SO 2 The gas phase product of F electrochemical fluorination is cooled and condensed. The operating temperature of cooling and condensing is 0°C, and the operating absolute pressure is 1.0 MPa, so that hydrogen fluorid...

Embodiment 2

[0061]Main equipment: tubular chemical reactor, leaching equipment, displacement reactor, evaporation equipment, cooling equipment, filtering equipment.

[0062] Main raw material: Methylsulfonyl fluoride CH 3 SO 2 F Electrochemical fluorination gas phase product, sodium hydroxide NaOH, leaching agent ethanol, hydrochloric acid HCl.

[0063] As shown in the figure, a methanesulfonyl fluoride CH 3 SO 2 F Electrochemical fluorination of gas phase products to prepare trifluoromethanesulfonic acid CF 3 SO 3 The method of H is based on methanesulfonyl fluoride CH 3 SO 2 F electrochemical fluorination gas phase product is raw material, and described method step is as follows:

[0064] (1) Cooling and condensation: In the cooling equipment, methylsulfonyl fluoride CH 3 SO 2 The gas phase product of F electrochemical fluorination is cooled and condensed. The operating temperature of cooling and condensing is -10°C, and the operating absolute pressure is 0.8 MPa, so that the h...

Embodiment 3

[0075] Main equipment: chemical absorption tower, leaching equipment, static mixer, evaporation equipment, cooling equipment, filtering equipment.

[0076] Main raw material: Methylsulfonyl fluoride CH 3 SO 2 F Electrochemical fluorination gas phase product, barium hydroxide Ba(OH) 2 , leaching agent acetone, hydrochloric acid HCl.

[0077] As shown in the figure, a methanesulfonyl fluoride CH 3 SO 2 F Electrochemical fluorination of gas phase products to prepare trifluoromethanesulfonic acid CF 3 SO 3 The method of H is based on methanesulfonyl fluoride CH 3 SO 2 F electrochemical fluorination gas phase product is raw material, and described method step is as follows:

[0078] (1) Cooling and condensation: In the cooling equipment, methylsulfonyl fluoride CH 3 SO 2 The gas phase product of F electrochemical fluorination is cooled and condensed. The operating temperature of cooling and condensing is -20°C, and the operating absolute pressure is 0.1MPa, so that the hy...

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Abstract

The invention relates to a method for preparing trifluoromethyl sulfonic acid CF3SO3H by electrochemical fluorination gas-phase product of methanesulfonyl fluoride CH3SO2F, the steps of the method are as follows: (1) the gas-phase product of the CH3SO2F electrochemical fluorination is cooled and condensed; (2) gas-liquid separation; (3) the gas-phase material obtained at the last step is added to water solution of potassium hydroxide KOH or sodium hydroxide NaOH or barium hydroxide Ba (OH) 2, the chemical absorption of the trifluoromethyl sulfuryl fluoride CF3SO2F is conducted; (4) gas-liquid separation: (5) liquid-phase evaporation and drying; (6) the solid-phase material is leached; (7) solid-liquid separation; (8) the liquid-phase is added to hydrochloric acid HCL or sulfuric acid H2SO4 for replacement reaction; (9) solid-liquid separation; (10) liquid-phase fractionating is conducted, and the product trifluoromethyl sulfonic acid CF3SO3H is obtained. The advantages of the invention are as follows: the cost is low, the process is simple, the energy consumption is small, the invention is clean and environmental-friendly, and the quality of the product is good.

Description

technical field [0001] The invention relates to a method for preparing trifluoromethanesulfonic acid CF 3 SO 3 The method of H, in particular a methanesulfonyl fluoride CH 3 SO 2 F Electrochemical fluorination of gas phase products to prepare trifluoromethanesulfonic acid CF 3 SO 3 The method of H belongs to the field of fine chemical technology. Background technique [0002] At present, trifluoromethanesulfonic acid is an important basic raw material for the synthesis of functional novel chemical products in the field of fine chemicals, and is an important raw material for the synthesis of ionic liquids, fluorosurfactants, and lithium-ion electrolytes. It has broad application prospects, development and preparation The new process method and key technology of trifluoromethanesulfonic acid is an important research and development field for building functional, fine, high-efficiency fine fluorine chemical products. [0003] Trifluoromethanesulfonic acid, the molecular f...

Claims

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Application Information

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IPC IPC(8): C07C309/80C07C303/44
Inventor 许文林徐晓强王雅琼陶荣辉司宗飞李霞丁培兴方剑慧王一明
Owner ZHANGJIAGANG GUOTAI HUARONG NEW CHEM MATERIALS CO LTD
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