Removal of thiothionylfluoride from sulfur tetrafluoride

   
   

A process for removing thiothionylfluoride from a composition containing sulfur tetrafluoride and thiothionylfluoride includes contacting the composition with a high surface area material, such as activated carbon. The process can provide purified sulfur tetrafluoride free of thiothionylfluoride. The high surface area material can be replaced for further processing. Alternatively, the material can be regenerated by contacting it with a gas mixture of oxygen and nitrogen at 150-450.degree. C. and converting the adsorbed elemental sulfur to sulfur dioxide without oxidation of the material.

Un proceso para quitar thiothionylfluoride de una composición que contiene tetrafluoride del sulfuro y thiothionylfluoride incluye entrar en contacto con la composición con un alto material del área superficial, tal como carbón activado. El proceso puede proporcionar tetrafluoride purificado del sulfuro libremente del thiothionylfluoride. El alto material del área superficial se puede substituir para la transformación posterior. Alternativomente, el material puede ser regenerado entrándolo en contacto con con una mezcla del gas del oxígeno y del nitrógeno en 150-450.degree. C. y convertir el sulfuro elemental fijado por adsorcio'n al dióxido de sulfuro sin la oxidación del material.

 
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