Halofluoro hydrocarbons prodn - by catalytic hydrofluorination of halogenated hydrocarbons

摘要

Halofluoro is not 2C aliphatic or cycloaliphatic hydrocarbons (in which halo is Cl, Br and/or I) are prepd. by reacting halogenated is not 2C (un)saturated (cyclo) aliphatic hydrocarbons having a lower degrees of fluorination than the end-prod. at 120-400 degrees C with a residence time of 0.1-40 seconds with excess HF in the presence of a catalyst produced by hydrofluorination of 8- or 7-alumina impregnated with Mn and Bi salt and having the compsn. 0.1-10 wt.% Mn, 0.1-20 wt.% Bi, 35-66 wt.% F, 24-42 wt.% Al, balance O.