Process for preparing sulfuryl-fluoride and -chlorofluoride prod

Details Process for preparing sulfuryl-fluoride and -chlorofluoride prod Process for preparing sulfuryl-fluoride and -chlorofluoride prod

1977-04-20

1978-07-25

Thomas, Earl C.

Chemistry of inorganic compounds

Halogen or compound thereof

Plural diverse halogens containing

423467, 423468, C01B 724, C01B 1745

Patent

active

041029879

ABSTRACT:
A product mixture resulting from the reaction of an anhydrous gaseous mixture of sulfur dioxide, chlorine and hydrogen fluoride in the presence of a catalyst is heated at a temperature of at least about 35.degree. C. under pressures up to about 65 psi to effect substantial conversion of undesired free chlorine in the resulting product mixture to sulfuryl chlorofluoride. The conversion of free chlorine to sulfuryl chlorofluoride allows the use of a completely anhydrous process from which uncontaminated sulfuryl fluoride and sulfuryl chlorofluoride products can readily be obtained. A method for the production of sulfuryl chlorofluoride from said gaseous mixture is also provided.

REFERENCES:
patent: 2562432 (1951-07-01), McCann et al.
patent: 2772144 (1956-11-01), Belf
patent: 3092458 (1963-06-01), Ruh et al.
patent: 3320030 (1967-05-01), Bisignani et al.
patent: 3403144 (1968-09-01), Lam et al.
patent: 3714336 (1973-01-01), Davis et al.
patent: 3850542 (1974-11-01), Barnard et al.

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