Ostwald Process NO Oxidation

4NH3 + 5O2 → 4NO + 6H2O

Visão geral

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

Papel Substância Coeficiente Estado
Reagente Ammonia NH₃ 4 (g)
Reagente Oxygen O 5 (g)
Produto Water H₂O 6 (g)

Exemplo do cotidiano

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

Importância industrial

O processo de Ostwald produz praticamente todo o ácido nítrico do mundo, essencial para fertilizantes (nitrato de amónio), explosivos e indústria química.

Propriedades

Tipo
Redox
Reversível
Não
Energia
Exotérmico
ΔH
-905,0 kJ/mol
Catalisador
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).