Method for Production of 1-Chloro-3,3,3-Trifluoropropene

Abstract

A production method of 1-chloro-3,3,3-trifluoropropene according to the present invention includes bringing a raw material composition containing 1,3,3,3-tetrafluoropropene and an acid composition containing hydrogen chloride into contact with each other in gas phase in the presence of a catalyst. This production method allows not only use of hydrogen chloride containing hydrogen fluoride, which has been generated during a preceding step (production of 1,1,1,3,3-pentafluoropropane as a raw material or analogues thereof), but also use of any of trans and cis isomers of the 1,1,1,3,3-pentafluoropropane for production of the 1-chloro-3,3,3-trifluoropropene. It is thus possible to efficiently produce the 1-chloro-3,3,3-trifluoropropene, which is known as an environment-adaptive chlorofluorocarbon. As the catalyst, preferred is an alumina catalyst treated by contact with hydrogen fluoride.

Dependencies are inferred from the claim text.