Claims
- 1. A process for producing halogenated hydrocarbons of 1 or 2 carbons which comprises reacting a chlorine-donating perhalogenated hydrocarbon selected from the group consisting of carbon tetrachloride, trichloromonofluoromethane, dichlorodifluoromethane, hexachloroethane, pentachloromonofluoroethane, tetrachlorodifluoroethane and trichlorotrifluoroethane with a hydrogen-donating halogenated hydrocarbon selected from the group consisting of trifluoromethane, difluoromethane, methyl fluoride, chlorodifluoromethane, dichloromonofluoromethane, methyl chloride, methylene chloride, chloroform, monochloromonofluoromethane, ethyl chloride, ethyl fluoride, monochloromonofluoroethane, dichloroethane, difluoroethane, trichloroethane, trifluoroethane, monochlorodifluoroethane, dichloromonofluoroethane, tetrachloroethane, trichloromonofluoroethane, dichlorodifluoroethane, monochlorotrifluoroethane and tetrafluoroethane in the presence of a catalyst selected from the group consisting of chromium oxides and oxyfluorides and activated carbon and recovering a first halogenated hydrocarbon product which is said hydrogen-donating halogenated hydrocarbon with one less hydrogen and one more chlorine and a second halogenated hydrocarbon product which is said chlorine-donating perhalogenated hydrocarbon with one more hydrogen and one less chlorine.
- 2. The process of claim 1 wherein said chlorine-donating perhalogenated hydrocarbon has more chlorines than does said hydrogen-donating halogenated hydrocarbon.
- 3. The process of claim 1 wherein said chlorine-donating perhalogenated hydrocarbon has two carbons.
- 4. The process of claim 1 wherein said chlorine-donating perhalogenated hydrocarbon is of the formula R-CCl.sub.3 where R is Cl, F, CCl.sub.3, CCl.sub.2 F, CClF.sub.2 or CF.sub.3.
- 5. The process of claim 4 wherein said chlorine-donating perhalogenated hydrocarbon is CF.sub.3 CCl.sub.3.
- 6. The process of claim 1 wherein said hydrogen-donating halogenated hydrocarbon has two carbons.
- 7. The process of claim 1 wherein said hydrogen-donating halogenated hydrocarbon is of the formula CH.sub.2 XF with X being H, Cl or F or of the formula CF.sub.3 CH.sub.2 Y with Y being H, Cl or F.
- 8. The process of claim 7 wherein said halogen-donating halogenated hydrocarbon is CF.sub.3 CH.sub.3.
- 9. The process of claim 8 wherein said chlorine-donating perhalogenated hydrocarbon is of the formula R-CCl.sub.3 where R is Cl, F, CCl.sub.3, CCl.sub.2 F, CClF.sub.2 or CF.sub.3.
- 10. The process of claim 7 wherein said chlorine-donating perhalogenated hydrocarbon is of the formula R-CCl.sub.3 wherein R is Cl, F, CCl.sub.3, CCl.sub.2 F, CClF.sub.2 or CF.sub.3.
- 11. The process of claim 1 wherein said catalyst is a chromium oxide.
- 12. The process of claim 11 wherein said chromium oxide catalyst is Cr.sub.2 O.sub.3.
- 13. The process of claim 1 conducted at between about 200.degree. C. and about 600.degree. C. with a catalyst contact time between about 1 and 600 seconds.
CROSS REFERENCE TO RELATED APPLICATION
This application is a continuation-in-part of copending application Ser. No. 843,759, filed Oct. 20, 1977, now U.S. Pat. No. 4,145,368.
US Referenced Citations (5)
Foreign Referenced Citations (1)
Number |
Date |
Country |
2144160 |
Mar 1973 |
DEX |
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
843759 |
Oct 1977 |
|