| abstract |
(57) Summary: CFX = CYCF 3 , where X is selected from H and F, Y is F when X is H, and Y is H when X is F. A method for making pentafluoropropene is disclosed. The process of the present invention comprises the step of contacting hexafluoropropane of the formula: CF 2 XCHYCF 3 with a catalyst at a temperature of about 200 ° C. to 500 ° C., optionally in the presence of an inert gas. Suitable catalysts include (1) (a) at least one compound selected from the oxides, fluorides, and oxyfluorides of magnesium, zinc, and mixtures of magnesium and zinc; A catalyst with at least one compound selected from oxides, fluorides, and oxyfluorides, provided that the atomic ratio of aluminum to the sum of magnesium and zinc is about 1: 4 or more. (E.g., 1: 9), (2) lanthanum fluoride, (3) fluorinated lanthanum oxide, (4) activated carbon, and (5) a three-dimensional matrix of carbonaceous material. |