| 摘要 |
Chlorine atoms in chlorinated lower aliphatic hydrocarbons are replaced by fluorine in the vapor phase reaction of the chlorinated hydrocarbons with aqueous HF at 275 DEG C.- 425 DEG C. in the presence of a metal fluoride catalyst, particularly where the metal is one or more of aluminum, nickel, or chromium. The fluorinated products are blowing agents, refrigerants, monomers, or intermediates for making them.
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