Ostwald Process NO Oxidation

4NH3 + 5O2 → 4NO + 6H2O

Descripción general

Ammonia is catalytically oxidized to nitric oxide over a platinum-rhodium gauze catalyst at about 850 C in the Ostwald process. Nitrogen is oxidized from -3 in NH₃ to +2 in NO. The NO is further oxidized to NO₂ and absorbed in water to make nitric acid. This process links the Haber process to nitric acid production.

Participantes

Rol Sustancia Coeficiente Estado
Reactivo Ammonia NH₃ 4 (g)
Reactivo Oxygen O 5 (g)
Producto Water H₂O 6 (g)

Ejemplo cotidiano

Nearly all explosives, from TNT to ammonium nitrate, begin with nitric acid produced by this catalytic oxidation of ammonia.

Importancia industrial

Etapa clave en la producción industrial de ácido nítrico para fertilizantes y explosivos a escala mundial.

Propiedades

Tipo
Redox
Reversible
No
Energía
Exotérmico
ΔH
-905,0 kJ/mol
Catalizador
Platinum-rhodium gauze

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Frequently Asked Questions

What is the equation for Ostwald Process NO Oxidation?
The balanced equation is: 4NH₃ + 5O₂ → 4NO + 6H₂O.
What type of reaction is Ostwald Process NO Oxidation?
Ostwald Process NO Oxidation is a redox reaction.
Is Ostwald Process NO Oxidation exothermic or endothermic?
Ostwald Process NO Oxidation is exothermic (releases energy). The enthalpy change (ΔH) is -905.0 kJ/mol.
What conditions are needed for Ostwald Process NO Oxidation?
This reaction requires a catalyst (Platinum-rhodium gauze).