Preparation of trifuloroethylene and chlorotrifluoroethylene


PURPOSE: To profitably prepare the subject components from a mixture of trichlorotrifluoroethane and hydrogen gas by reacting the materials with each other at a specific temperature in the presence of nickel.chromium complex oxide catalyst and/or nickel.chromium complex metal catalyst having a specific chromium content. CONSTITUTION: Trichlorotrifluoroethane and hydrogen gas are reacted with each other in the presence of a NiO-Cr 2 O 3 complex oxide and/or Ni-Cr complex metal catalyst having a chromium content [Cr/(Ni+Cr)×100] of 3-70 atomic %, preferably 5-60 atomic %, further preferably 10-50 atomic %, at 300-500°C, preferably 350-450°C, to profitably simultaneously prepare trifluoroethylene and/or chlorotrifluoroethylene useful as raw materials for fluoro polymers such as fluoro resins and fluoro rubbers in high selectivity in the long lifetime catalyst. COPYRIGHT: (C)1991,JPO&Japio




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