A process for the production of acrylonitrile, acetonitrile and hydrogen cyanide comprising contacting at an elevated temperature, propylene, ammonia and oxygen in the vapor phase in the presence of a catalyst, said catalyst comprising a complex of metal oxides wherein the relative ratios of the elements in said catalyst are represented by the following formula: Mo 12 Bi a Fe b A c D d E e F f G g Ce h O n wherein A is at least one element selected from the group consisting of sodium, potassium, rubidium and cesium; and D is at least one element selected from the group consisting of nickel, cobalt, manganese, zinc, magnesium, calcium, strontium, cadmium and barium; E is at least one element selected from the group consisting of chromium, tungsten, boron, aluminum, gallium, indium, phosphorus, arsenic, antimony, vanadium and tellurium; F is at least one element selected from the group consisting of a rare earth element, titanium, zirconium, hafnium, niobium, tantalum, aluminum, gallium, indium, thallium, silicon, germanium, and lead; G is at least one element selected from the group consisting of silver, gold, ruthenium, rhodium, palladium, osmium, iridium, platinum and mercury; and a is from 0.05 to 7, b is from 0.1 to 7, c is from 0.01 to 5, d is from 0.1 to 12, e is from 0 to 5, f is from 0 to 5, g is from 0 to 0.2, h is from 0.01 to 5, and n is the number of oxygen atoms required to satisfy the valence requirements of the other component elements present; wherein the relative yields of acrylonitrile, acetonitrile and hydrogen cyanide from said process are defined by the following: α = % AN + 3 × % HCN + 1.5 × % ACN ÷ % PC × 100 wherein: %AN is the Acrylonitrile Yield and %AN ≥ 81, %HCN is the Hydrogen Cyanide Yield, %ACN is the Acetonitrile Yield, %PC is the Propylene Conversion, and α is greater than 100. A is at least one element selected from the group consisting of sodium, potassium, rubidium and cesium; and D is at least one element selected from the group consisting of nickel, cobalt, manganese, zinc, magnesium, calcium, strontium, cadmium and barium; E is at least one element selected from the group consisting of chromium, tungsten, boron, aluminum, gallium, indium, phosphorus, arsenic, antimony, vanadium and tellurium; F is at least one element selected from the group consisting of a rare earth element, titanium, zirconium, hafnium, niobium, tantalum, aluminum, gallium, indium, thallium, silicon, germanium, and lead; G is at least one element selected from the group consisting of silver, gold, ruthenium, rhodium, palladium, osmium, iridium, platinum and mercury; and a is from 0.05 to 7, b is from 0.1 to 7, c is from 0.01 to 5, d is from 0.1 to 12, e is from 0 to 5, f is from 0 to 5, g is from 0 to 0.2, h is from 0.01 to 5, and n is the number of oxygen atoms required to satisfy the valence requirements of the other component elements present; wherein the relative yields of acrylonitrile, acetonitrile and hydrogen cyanide from said process are defined by the following: α = % AN + 3 × % HCN + 1.5 × % ACN ÷ % PC × 100 wherein: %AN is the Acrylonitrile Yield and %AN ≥ 81, %HCN is the Hydrogen Cyanide Yield, %ACN is the Acetonitrile Yield, %PC is the Propylene Conversion, and α is greater than 100.