Patent ID: 7186670

Claim:
A process for ammoxidation of alkanes and olefins comprising: contacting a mixture of an alkane or olefin, ammonia, molecular oxygen and a diluent in the gas phase with a catalyst composition of the formula; VSb a M b Q c O x wherein V is vanadium, Sb is antimony, M is at least one element selected from magnesium, aluminum, zirconium, silicon, hafnium, titanium and niobium, Q is at least one element selected from rhenium, tungsten, molybdenum, tantalum, manganese, phosphorus, cerium, tin, boron, scandium, bismuth, gallium, indium, iron, chromium, lanthanum, yttrium, zinc, cobalt, nickel, cadmium, copper, strontium, barium, calcium, silver, potassium, sodium and cesium, a is 0.5 to 20, b is 2 to 50, c is 0 to 10 and x is determined by the valence requirements of the elements present; wherein the diluent comprises carbon dioxide from 0.1 to 40 mole % of the mixture.