| abstract |
The invention discloses a method for preparing E-1,1,1,4,4, 4-hexafluoro-2-butene by gas phase fluorination, which comprises the following steps: in the presence of a fluorination catalyst, carrying out fluorination reaction on tetrafluoro-butriene or tetrachloro-butriene and hydrogen fluoride to obtain the E-1,1,1,4,4, 4-hexafluoro-2-butene. The method is mainly used for efficiently and continuously and circularly producing the E-1,1,1,4,4, 4-hexafluoro-2-butene. |