Abstract: A process for oxidizing fluorinated olefins to the corresponding epoxides by reacting a fluoroolefin with oxygen in a concentration, in the reaction mixture, ranging from 1 to 60% by volume, at a temperature up to 250.degree. C. and in the presence of a catalyst consisting of porous silicon dioxide in a crystalline form, with a high purity degree and carrying metal oxides of the first transition series, or copper oxides or lanthanide oxides or mixtures thereof.

Abstract: Process for the preparation of a perfluoroacyl fluoride wherein the acyl radical is a propionyl or butyryl group, characterized in that perfluoroalkylvinylether wherein the alkyl radical is a methyl or ethyl group is thermally treated in the presence of a catalyst selected from the group consisting of:(A) a fluoride of Li, Na, K, Cs or Rb, or another compound of Li, Na, K, Cs or Rb which is easily fluorinated under the reaction conditions;(B) a fluoride of Be, Mg, Ca, Sr, or Ba, or another compound of Be, Mg, Ca, Sr, or Ba which is easily fluorinatable under the reaction conditions:(C) a fluoroaluminate, fluorosilicate, fluorotitanate or fluorometallate of an alkali metal, or of a metal belonging to group IIA of the Periodic Table, i.e.

Abstract: Alpha, beta unsaturated nitriles are prepared from olefins by reaction thereof with ammonia and oxygen, in the gas phase and in the presence of a novel catalyst system consisting of the elements cerium, tellurium, molybdenum, of at least one of the elements selected from the group comprising iron, chromium and aluminium, and moreover of oxygen chemically combined with the above cited elements.