Rhone-poulenc Chimie

Elisabeth Bordes

Gilbert Blanchard

Gilbert Ferre

Michel Gubelmann

Laurent Tessier

The aliphatic carboxylic acids, e.g., acetic acid, are selectively prepared, even on an industrial scale, by controlledly oxidizing the corresponding alkanes, e.g., ethane, with a source of oxygen, in the presence of a catalytically effective amount of an advantageously supported heteropolyacid catalyst having the formula (I):

Preparation of aliphatic carboxylic acids in the presence of

The saturated hydrocarbons, typically alkanes having from 3 to 12 carbon atoms, e.g., propane, are selectively ammoxidized into .alpha.,.beta.-unsaturated nitriles and olefins, e.g., acrylonitrile and propylene, by reacting such alkanes with ammonia and oxygen, in vapor phase and in the presence of a solid catalyst, such solid catalyst including a catalytically effective amount of an active catalytic phase which comprises molybdenum, oxygen and at least one element selected from among the alkaline earth metals, Mn, Fe, U, La, Co, Ni, Zn, Ag, Cd, W, Zr, Pb, Te, Ga, Al, B, Nb and Ta.

Ammoxidation of saturated hydrocarbons

The alkanes, e.g., propane, are selectively converted (ammoxidized) into admixtures comprising .alpha.,.beta.-unsaturated nitriles, e.g., acrylonitrile, by reacting same with ammonia and oxygen, in vapor phase, and in the presence of a catalytically effective amount of a solid catalyst, the catalytically active phase of which comprising (1) molybdenum, vanadium and oxygen and (2) at least one of the elements, manganese, zinc, cobalt, copper, lithium, sodium, potassium and silver.

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Vemars, France

Elisabeth Bordes