Method of safely preparing graphite fluoride

Details Method of safely preparing graphite fluoride Method of safely preparing graphite fluoride

1984-09-14

1986-05-20

Warren, Charles F.

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

Organic compounds

Halogen containing

C07C 1700

Patent

active

045903166

ABSTRACT:
A method of preparing graphite fluoride such as (CF).sub.n or (C.sub.2 F).sub.n by heterogeneous contact reaction between a carbon material such as graphite or petroleum coke and fluorine gas at about 200.degree.-550.degree. C. In the gas phase of the reaction system, the total concentration of higher fluorocarbons having more than four carbon atoms formed by side reactions is controlled so as not to become above 3% by volume by, for example, condensation or catalytic decomposition of at least a portion of the higher fluorocarbons in the gas flowed out of the reaction chamber for recirculation. Such control is highly effective for prevention of rapid and violent decomposition of the graphite fluoride existing in the solid phase of the reaction system induced by sudden decomposition of the higher fluorocarbons in the reaction system to lower fluorocarbons.

REFERENCES:
patent: 2664449 (1953-12-01), Miller
patent: 3925492 (1975-12-01), Ukaji et al.
patent: 3929918 (1975-12-01), Meshri et al.
patent: 3929920 (1975-12-01), Komo et al.

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