| abstract |
This invention provides a process for producing 2,3,3,3-tetrafluoropropene, the process comprising: (1) a first reaction step of reacting hydrogen fluoride with at least one chlorine-containing compound selected from the group consisting of a chloropropane represented by Formula ( 1 ) : CC1X 2 CHC1CH 2 C1, wherein each X is the same or different and is CI or F, a chloropropene represented by Formula (2): CC1Y 2 CC1=CH 2 , wherein each Y is the same or different and is CI or F, and a chloropropene represented by Formula (3): CZ 2 =CC1CH 2 C1, wherein each Z is the same or different and is CI or F in a gas phase in the absence of a catalyst while heating; and (2) a second reaction step of reacting hydrogen fluoride with a reaction product obtained in the first reaction step in a gas phase in the presence of a fluorination catalyst while heating. According to the process of this invention, 2,3,3,3- tetrafluoropropene (HFO-1234yf) can be obtained with high selectivity, and catalyst deterioration can be suppressed. |