| 摘要 |
<p>An improved process for the manufacture of 1,1,1-trifluorodichloroethane and/or 1,1,1,2-tetrafluorochloroethane by contacting in the gaseous phase at about 250 DEG C to about 450 DEG C a selected pentahaloethane with hydrogen fluoride in the presence of a catalyst composition comprising a catalytically effective amount of a selected metal in combination with a high fluorine content aluminum-containing compound, the reaction being conducted under controlled conditions whereby the production of pentafluoroethane is minimized.</p> |
