Process for preparing sulphur hexafluoride

Details Process for preparing sulphur hexafluoride Process for preparing sulphur hexafluoride

1975-02-14

1977-08-02

Stern, Edward

Chemistry of inorganic compounds

Halogen or compound thereof

Sulfur containing

C01B 1745

Patent

active

040396460

ABSTRACT:
Disclosed is a process for the production of sulphur hexafluoride comprising the steps of reacting fluorine and molten sulphur, removing lower-boiling by-products, separating a portion of the sulphur hexafluoride from higher-boiling by-products and treating the residue containing the higher-boiling by-products at a temperature between about 450.degree. and 800.degree. C. for a period of time between about 0.1 and 25 seconds. The treatment step may be carried out in the presence of elementary fluorine, and provision may be made for recycling the treated or untreated residue to the reaction stage. An apparatus for carrying out the process is also disclosed.

REFERENCES:
patent: 2883267 (1959-04-01), Muetterties
patent: 2897055 (1959-07-01), Muetterties et al.
patent: 2912307 (1959-11-01), Middleton
patent: 3336111 (1967-08-01), Watson et al.
patent: 3361532 (1968-01-01), Massonne
Chemical Abstracts, vol. 70, 1969, 21440d.

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