High-purity fluorine gas, production and use thereof, and...

Details High-purity fluorine gas, production and use thereof, and... High-purity fluorine gas, production and use thereof, and...

2005-10-18

2005-10-18

Silverman, Stanley S. (Department: 1754)

Chemistry of inorganic compounds

Halogen or compound thereof

Elemental halogen

C423S503000, C423S504000, C436S124000

Reexamination Certificate

active

06955801

ABSTRACT:
A step (1) of heating a fluoronickel compound to release a fluorine gas, a step (2) of allowing a fluorine gas to be occluded into a fluorinated compound, and a step (3) of heating the fluoronickel compound and reducing an inner pressure are conducted in a container, respectively, at least once, and thereafter a high-purity fluorine gas is obtained in the step (1). Also, a step (5) of heating a fluoronickel compound and reducing an inner pressure and a step (6) of allowing a fluorine gas reduced in a hydrogen fluoride content to be occluded into the fluoronickel compound are conducted in a container having a fluorinated layer formed on its surface, respectively, at least once, the step (5) is further conducted, and thereafter a fluorine gas containing impurity gases is contacted with the fluoronickel compound to fix and remove the fluorine gas, and the impurities are analyzed by gas chromatography.

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