| abstract |
This invention provides a method for stably producing 2,3,3,3-tetrafluoropropene for a long period of time while suppressing catalyst deactivation. This invention provides a method for producing 2,3,3,3-tetrafluoropropene, the method comprising: (d) reacting 2-chloro-3,3,3-trifluoropropene with hydrogen fluoride in the presence of a catalyst; (e) subjecting the reaction mixture obtained in step (d) to distillation to separate the mixture into a first stream comprising 2,3,3,3-tetrafluoropropene as a main component and a second stream comprising unreacted hydrogen fluoride and organic matter containing unreacted 2-chloro-3,3,3-trifluoropropene as main components; and (f) recycling the second stream separated in step (e) above to the reaction of step (d), wherein the distillation of step (e) is performed under conditions that satisfy the relationship of a specific equation. |