Fluorocarbon manufacturing process

Details Fluorocarbon manufacturing process Fluorocarbon manufacturing process

1999-07-27

2000-08-01

Richter, Johann

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

Organic compounds

Halogen containing

C07C 2118

Patent

active

060969326

ABSTRACT:
A process is disclosed for increasing the fluorine content of an olefinic compound of the formula C.sub.n H.sub.m F.sub.2n-m, where n is an integer from 2 to 6 and m is an integer from 1 to 2n. The process involves (a) contacting the olefinic compound with a metal fluoride composition of the formula (AgF)(MF.sub.2).sub.x where M is selected from the group consisting of Mn, Fe, Co, Ni, Cu, Zn and mixtures thereof and x is a number from 0 to 1, at a temperature above 200.degree. C. sufficient to transfer F from the metal fluoride composition to the olefinic compound, thereby producing a chemically reduced metal fluoride composition comprising metallic silver; (b) oxidizing the reduced metal fluoride composition from (a) in the presence of HF to regenerate the metal fluoride composition of the formula (AgF)(MF.sub.2).sub.x ; and (c) recycling regenerated metal fluoride composition of (b) to (a). Also disclosed are a novel composition of the formula Ag.sub.10 F.sub.8 C.sub.2 ; and a process for producing hexafluoroethane which involves heating Ag.sub.10 F.sub.8 C.sub.2 to a temperature sufficient for its decomposition.

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patent: 5756834 (1998-05-01), Pasenok et al.
R.G. Plevey et al., Fluorination with Complex Metal Fluorides Part II, Journal of Fluorine Chemistry, 3, 259-266, 1973/74.

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