Abstract
AbstractThe origin of the products of the ammoxidation of propene over cerium‐doped silica supported bismuth molybdates was derived from the effects of temperature (380°‐480°C) on overall conversion and selectivity in fixed‐bed operations. At low (< 80 %) conversion levels, the ammoxidation reaction leads to acrylonitrile at Mo(VI) active sites and to by‐products (HCN, acetonitrile, CO and CO2) at Mo(V) sites; at the highest conversions, by‐products derive from consecutive oxidation of acrylonitrile.
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