Process for producing 2,3,3,3-tetrafluoropropene

摘要

The present invention relates, in part, to the discovery that the presence of impurities in a reactor for dehydrochlorinating HCFC-244bb to HFO-1234yf results in a reduced conversion rate and/or a selectivity changeover from HFO-1234yf to HCFO-1233xf. By substantially removing such impurities, it is shown that the conversion rate may be improved and selectivity to HFO-1234yf via dehydrochlorination of HCFC-244bb is also improved.

主权项

1. A process for preparing 2,3,3,3-tetrafluoropropene comprising:
(a) removing impurities selected from the grow consisting of metal halides, metal oxides, and carbonaceous materials from a reactor such that the reactor is substantially free of impurities; (b) providing a starting composition comprising 2-chloro-1,1,1,2-tetrafluoropropane in the reactor under conditions effective to produce a final composition comprising 2,3,3,3-tetrafluoropropene.