Ostwald Process NO Oxidation

4NH3 + 5O2 → 4NO + 6H2O

Tổng quan

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.

Người tham gia

Vai trò Chất Hệ số Trạng thái
Chất phản ứng Ammonia NH₃ 4 (g)
Chất phản ứng Oxygen O 5 (g)
Sản phẩm Water H₂O 6 (g)

Ví dụ thực tế

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

Tầm quan trọng công nghiệp

The Ostwald process produces virtually all the world's nitric acid, essential for fertilizers (ammonium nitrate), explosives, and chemical manufacturing.

Tính chất

Loại
Redox
Thuận nghịch
Không
Năng lượng
Tỏa nhiệt
ΔH
-905,0 kJ/mol
Chất xúc tác
Platinum-rhodium gauze

Phản ứng liên quan

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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).