Method for preparing antimony pentafluoride

A technology of antimony pentafluoride and fluorine gas, applied in chemical instruments and methods, inorganic chemistry, antimony compounds, etc., can solve the problems of high melting point, difficult to purify products, high impurity content of finished products, etc., and achieve easy control and reliable product quality , the effect of high yield
CN101531400BActive Publication Date: 2011-02-09RES INST OF PHYSICAL & CHEM ENG OF NUCLEAR IND
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
RES INST OF PHYSICAL & CHEM ENG OF NUCLEAR IND
Publication Date
2011-02-09

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Abstract

The invention discloses a method for preparing antimony pentafluoride, and the method comprises the following steps: firstly purifying raw material fluorine gas, removing high boiling point gas impurities which can not be condensed in the fluorine gas; carrying out the synthesis reaction on the fluorine gas and antimony trioxide for generating a liquid antimony pentafluoride crude product; further gasifying and condensing the liquid antimony pentafluoride crude product by the distillation process and removing the gas impurities in the crude product to obtain a high-purity liquid antimony pentafluoride product. The method has simple equipment, convenient operation, safe equipment operation, stable product quality and high purity of being greater than 98.5 percent.
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Description

technical field

[0001] The invention belongs to a method for preparing antimony pentafluoride, in particular to a method for preparing antimony pentafluoride by using fluorine gas and antimony as raw materials and carrying out a synthesis reaction in a negative pressure vessel. Background technique

[0002] Antimony pentafluoride is a high-energy fluorinating agent widely used in anticancer drugs in the medical pharmaceutical industry. There are many methods for preparing antimony pentafluoride at present, and the commonly used preparation methods are as follows:

[0003] One method is: fluorine gas (F 2 ) and antimony trifluoride (SbF 3 ) react to form antimony pentafluoride (SbF 5 ), the chemical reaction formula is:

[0004] f 2 +SbF 3 →SbF 5

[0005] Another method is: the reaction of hydrogen fluoride and antimony pentachloride to prepare antimony pentafluoride. The method is to mix hydrogen fluoride gas (HF) and antimony pentachloride (SbCl 5 ) mixture was ref...

Claims

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