| 摘要 |
PURPOSE:To obtain the subject compound from chloropentafluoroethane in high yield by using a heat-resistant reducing catalyst containing a platinum group element as the principal component and one or more elements selected from VIII-group element, Re, Mo, W, No, Ta and Ti, etc. CONSTITUTION:Pentafluoroethane is obtained by reduction of chloropentafluoroethane with hydrogen by using a reducing catalyst containing a platinum group element (especially Pt, Rh or Ru is preferable) as the principal component and one or more elements selected from VIII-group element, rhenium, molybdenum, tungsten, niobium, tantalum, titanium, zirconium, hafnium, lanthanum, lanthanide and a 1B-group element as a catalyst. Amount of the minor adding components to the catalyst is preferably 0.10-50wt.%, especially 0.1-20wt.%. Reaction is preferably carried out at 0-450 deg.C, especially 50-350 deg.C. Said catalyst is useful as a cooling medium or heating medium, etc., having long life and high yield. |
