ammoxidation

thumb|150px|right|Acrylonitrile is produced on an industrial scale by the ammoxidation of [[propylene.]]

In organic chemistry, ammoxidation is a process for the production of nitriles () using ammonia () and oxygen (). It is sometimes called the SOHIO process, acknowledging that ammoxidation was developed at Standard Oil of Ohio. The usual substrates are alkenes. Several million tons of acrylonitrile are produced in this way annually: CH3CH=CH2 + 3/2 O2 + NH3 -> N#CCH=CH2 + 3 H2O