Selective catalytical dehydrochlorination of hydrochlorofluorocarbons
View Patent ↗A dehydrochlorination process is disclosed. The process involves contacting R f CHClCH 2 Cl with a carbon catalyst in a reaction zone to produce a product mixture comprising R f CCl═CH 2 , wherein R f is a perfluorinated alkyl group.
1. A dehydrochlorination process comprising contacting R f CHClCH 2 Cl with a carbon catalyst in a reaction zone to produce a product mixture comprising R f CCl═CH 2 , wherein R f is a perfluorinated alkyl group, wherein the temperature in the reaction zone ranges from about 325° C. to about 500° C. and wherein the product selectivity to R f CCl═CH 2 is at least 90 mole %.
2. The dehydrochlorination process of claim 1 wherein the carbon catalyst is an activated carbon.
3. The dehydrochlorination process of claim 2 wherein the carbon catalyst is an acid washed activated carbon.
4. The dehydrochlorination process of claim 2 wherein the carbon catalyst is a non-acid washed activated carbon.
5. The dehydrochlorination process of claim 1 wherein R f is CF 3 .
6. The dehydrochlorination process of claim 1 wherein the dehydro chlorination selectivity to R f CCl═CH 2 is at least 95 mole %.