Production and use of hexafluoroethane

Details Production and use of hexafluoroethane Production and use of hexafluoroethane

2007-04-24

2007-04-24

Keys, Rosalynd (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Halogen containing

C570S177000, C570S178000

Reexamination Certificate

active

11028154

ABSTRACT:
A process for production of high-purity hexafluoroethane, wherein a mixed gas containing hexafluoroethane and chlorotrifluoromethane is reacted with hydrogen fluoride in a gas phase in the presence of a fluorination catalyst at 200–450° C., for fluorination of the chlorotrifluoromethane, or wherein pentafluoroethane containing chlorine compounds with 1–3 carbon atoms is reacted with hydrogen in a gas phase in the presence of a hydrogenation catalyst at 150–400° C., and the product is then reacted with fluorine in a gas phase in the presence of a diluent gas.

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