Claims
- 1. A process for producing trichloromonofluoromethane, dichlorodifluoromethane and chloroform comprising the steps of:
- (a) reacting, in the vapor phase, trifluoromethane or monochlorodifluoromethane and carbon tetrachloride in the presence of an effective amount of a catalyst consisting essentially of activated aluminum and magnesium oxides at a temperature of about 150.degree. to 350.degree. C., a pressure of about 0.1 to 25 atmospheres, a molar feed ratio of chlorofluorocarbon to carbon tetrachloride of about 0.1 to 10.0 and a contact time of about 0.2 to 20 seconds to produce trichloromono-, dichlorodifluoromethane and chloroform as the primary reaction products, and
- (b) separating the trichloromonofluoromethane, difluorodichloromethane and chloroform from the reaction product of step (a).
- 2. The process of claim 1 wherein the catalyst contains at least about 3 percent each of aluminum or magnesium as a weight percentage of total aluminum and magnesium.
- 3. The process of claim 1 wherein the catalyst contains from 90 to 10 weight percent aluminum oxide and 10 to 90 weight percent magnesium oxide.
- 4. The process of claim 1 wherein the catalyst contains from 60 to 30 weight percent aluminum oxide and 40 to 70 weight percent magnesium oxide.
- 5. A process for producing trichloromonofluoromethane, dichlorodifluoromethane and chloroform comprising the steps of:
- (a) reacting, in the vapor phase, trifluoromethane or monochlorodifluoromethane and carbon tetrachloride in the presence of an effective amount of a catalyst consisting essentially of activated aluminum and magnesium oxides in which the amount of magnesium in the catalyst is at least 5 percent by weight of the catalyst's total metals content at a temperature of about 150.degree. to 350.degree. C., a pressure of about 0.1 to 25 atmospheres, a molar feed ratio of chlorofluorocarbon to carbon tetrachloride of about 0.1 to 10.0 and a contact time of about 0.2 to 20 seconds to produce trichloromonofluoromethane, dichlorodifluoromethane and chloroform as the primary reaction products, and
- (b) separating the trichloromonofluoromethane, difluorodichloromethane and chloroform from the reaction product of step (a).
Parent Case Info
This application is a continuation of application Ser. No. 07/432.314 filed Nov. 3, 1989, which in turn is a continuation of application Ser. No. 07/211,103 filed Jun. 17, 1988, which in turn is a continuation of application Ser. No. 07/085,256 filed Aug. 11, 1987, which in turn is a continuation of application Ser. No. 06/841,949 filed Mar. 20, 1986, all now abandoned.
US Referenced Citations (7)
Number |
Name |
Date |
Kind |
3087974 |
Hauptschein et al. |
Apr 1963 |
|
3087975 |
Hauptschern et al. |
Apr 1963 |
|
3087976 |
Hauptschein et al. |
Apr 1963 |
|
3138559 |
Hauptschein et al. |
Jun 1964 |
|
3651156 |
Scherer et al. |
Mar 1972 |
|
3793229 |
Groppelli et al. |
Feb 1974 |
|
4192022 |
Sweeney et al. |
Mar 1980 |
|
Foreign Referenced Citations (2)
Number |
Date |
Country |
306566 |
Mar 1989 |
EPX |
60-6928 |
Dec 1982 |
JPX |
Continuations (4)
|
Number |
Date |
Country |
Parent |
432314 |
Nov 1989 |
|
Parent |
211103 |
Jun 1988 |
|
Parent |
85256 |
Aug 1987 |
|
Parent |
841949 |
Mar 1986 |
|