| 摘要 |
<p>PURPOSE:To selectively obtain the subject compound by using a silica-carrying nickel, cobalt, iron or chromium catalyst as a catalyst in reacting 1,1,1- trichloro-2,2,2-trifluoroethane with hydrogen in the presence of a catalyst. CONSTITUTION:1,1,1-trichloro-2,2,2-trifluoroethane is reacted with hydrogen in the presence of a catalyst to produce 1,1-dichloro-2,2,2-trifluoroethane. In the process, the reaction is performed at a temperature of 300-550 deg.C, preferably 350-500 deg.C using Ni/SiO2, Co/SiO2, Fe/SiO2 and/or Cr/SiO2 catalyst usually carrying 0.1-5wt.% nickel, cobalt, iron or chromium on silica to readily afford the aimed compound in high selectivity.</p> |
